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De Keersmaecker B, Jansen K, Aertsen M, Naulaers G, De Catte L. Outcome of partial agenesis of corpus callosum. Am J Obstet Gynecol 2024; 230:456.e1-456.e9. [PMID: 37816486 DOI: 10.1016/j.ajog.2023.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/12/2023]
Abstract
BACKGROUND The diagnosis of corpus callosum anomalies by prenatal ultrasound has improved over the last decade because of improved imaging techniques, scanning skills, and the routine implementation of transvaginal neurosonography. OBJECTIVE Our aim was to investigate all cases of incomplete agenesis of the corpus callosum and to report the sonographic characteristics, the associated anomalies, and the perinatal outcomes. STUDY DESIGN We performed a retrospective analysis of cases from January 2007 to December 2017 with corpus callosum anomalies, either referred for a second opinion or derived from the prenatal ultrasound screening program in a single tertiary referral center. Cases with complete agenesis were excluded from the analysis. Standardized investigation included a detailed fetal ultrasound including neurosonogram, fetal karyotyping (standard karyotype or array comparative genomic hybridization) and fetal magnetic resonance imaging. The pregnancy outcome was collected, and pathologic investigation in case of termination of the pregnancy or fetal or neonatal loss was compared with the prenatal findings. The pregnancy and fetal or neonatal outcomes were reported. The neurologic assessment was conducted by a pediatric neurologist using the Bayley Scales of Infant Development-II and the standardized Child Development Inventory when the Bayley investigation was unavailable. RESULTS Corpus callosum anomalies were diagnosed in 148 cases during the study period, 62 (41.9%) of which were excluded because of complete agenesis, and 86 fetuses had partial agenesis (58.1%). In 20 cases, partial agenesis (23.2%) was isolated, whereas 66 (76.7%) presented with different malformations among which 29 cases (43.9%) were only central nervous system lesions, 21 cases (31.8%) were non-central nervous system lesions, and 16 cases (24.3%) had a combination of central nervous system and non-central nervous system lesions. The mean gestational age at diagnosis for isolated and non-isolated cases was comparable (24.29 [standard deviation, 5.05] weeks and 24.71 [standard deviation, 5.35] weeks, respectively). Of the 86 pregnancies with partial agenesis, 46 patients opted for termination of the pregnancy. Neurologic follow-up data were available for 35 children. The overall neurologic outcome was normal in 21 of 35 children (60%); 3 of 35 (8.6%) showed mild impairment and 6 of 35 (17.1%) showed moderate impairment. The remaining 5 of 35 (14.3%) had severe impairment. The median duration of follow-up for the isolated form was 45.6 months (range, 36-52 months) and 73.3 months (range, 2-138 months) for the nonisolated form. CONCLUSION Partial corpus callosum agenesis should be accurately investigated by neurosonography and fetal magnetic resonance imaging to describe its morphology and the associated anomalies. Genetic anomalies are frequently present in nonisolated cases. Efforts must be taken to improve ultrasound diagnosis of partial agenesis and to confirm its isolated nature to enhance parental counseling. Although 60% of children with prenatal diagnosis of isolated agenesis have a favorable prognosis later in life, they often have mild to severe disabilities including speech disorders at school age and behavior and motor deficit disorders that can emerge at a later age.
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Affiliation(s)
- Bart De Keersmaecker
- Fetal-Maternal Medicine Unit, Department of Obstetrics and Gynecology, University Hospital Leuven, Leuven, Belgium; Department of Obstetrics and Gynecology, AZ Groeninge, Kortrijk, Belgium; Department of Development and Regeneration, University Hospital Leuven, Leuven, Belgium
| | - Katrien Jansen
- Department of Development and Regeneration, University Hospital Leuven, Leuven, Belgium; Department of Pediatrics, Pediatric Neurology Unit, University Hospital Leuven, Leuven, Belgium
| | - Michael Aertsen
- Department of Development and Regeneration, University Hospital Leuven, Leuven, Belgium; Department of Radiology, University Hospital Leuven, Leuven, Belgium
| | - Gunner Naulaers
- Department of Development and Regeneration, University Hospital Leuven, Leuven, Belgium; Department of Pediatrics, Neonatal Unit, University Hospital Leuven, Leuven, Belgium
| | - Luc De Catte
- Fetal-Maternal Medicine Unit, Department of Obstetrics and Gynecology, University Hospital Leuven, Leuven, Belgium; Department of Development and Regeneration, University Hospital Leuven, Leuven, Belgium.
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Wu FT, Chen CP. Anomalies of the Corpus Callosum in Prenatal Ultrasound: A Narrative Review for Diagnosis and Further Counseling. J Med Ultrasound 2024; 32:99-103. [PMID: 38882617 PMCID: PMC11175368 DOI: 10.4103/jmu.jmu_49_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 06/18/2024] Open
Abstract
The corpus callosum is the major interhemispheric tract that plays an important role in neurological function. Understanding the etiology and embryology development helps the ultrasound diagnosis for disorders of the corpus callosum and further counseling. The nonvisualization of cavum septum pellucidum or dysmorphic cavum septum pellucidum in axial view are indirect signs for beginners to diagnose complete agenesis of corpus callosum (cACC) and partial agenesis of the corpus callosum (pACC). Further coronal view, sagittal view, and fetal magnetic resonance imaging are also important for evaluation. Genetic testing plays an essential tool in anomalies of corpus callosum by revealing the underlying genetic pathophysiology, such as chromosomal anomalies and numerous monogenetic disorders in 30%-45% of ACC. Diagnosis and prediction of prognosis for hypoplasia or hyperplasia of the corpus callosum are more difficult compared to cACC and pACC because of the limited reports in the literature. However, the complex types often had poorer prognostic outcomes compared to the isolated types. Hence, it is important to evaluate and follow fetal conditions thoroughly to rule out intracranial or extracranial anomalies in other systems.
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Affiliation(s)
- Fang-Tzu Wu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Chih-Ping Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
- Institute of Clinical and Community Health Nursing, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
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Huang R, Chen J, Hou X, Liu L, Sun G, Pan H, Ma Y. Retrospective analysis of the prognostic factors of fetal corpus callosum dysplasia. BMC Pregnancy Childbirth 2024; 24:101. [PMID: 38302905 PMCID: PMC10832155 DOI: 10.1186/s12884-024-06300-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 01/28/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND To analyze the genetic characteristics and long-term outcomes of fetuses with dysplasia of the corpus callosum (DCC) or partial agenesis of the corpus callosum (PACC). METHODS A total of 42 fetuses with DCC (n = 36) or PACC (n = 6) were retrospectively analyzed from January 2016 to December 2022 at the Peking University First Hospital. The cohort was categorized into isolated (15/42, 36%) and nonisolated groups (27/42, 64%), and differences in the genetic abnormalities and long-term outcomes between the two groups were analyzed. DCC was subdivided into short CC, thin CC, and thick CC. The outcomes of the three different types of DCC were analyzed and discussed. RESULTS (1) Thirty-nine of the 42 cases underwent CMA (chromosomal microarray analysis) and CMA + WES (whole exome sequencing), with 13/15 cases in isolated group and 26/27 cases in nonisolated group. Only pathogenic or likely pathogenic (P/LP) variants were considered, identifying P/LP variants in 2/13 cases in isolated group and 12/26 cases in nonisolated group. There was no significant difference between the two groups (χ² = 3.566, P = 0.05897). (2) In the isolated group, 8 cases were terminated, and 7 cases were delivered. Postnatal follow-up detected 1 case of gross motor development delay one year after birth; no obvious abnormalities were found in the other six cases. In the nonisolated group, 21 cases were terminated, and 6 cases were delivered. Postnatal follow-up detected 4 cases of children with different degrees of language, motor and intelligence abnormalities; 1 case died 10 days after birth. No obvious abnormalities were observed in one case. Six cases (86%, 6/7) in the isolated group showed normal development, compared with 1 case (17%, 1/6) in the nonisolated group, with a significant difference (χ² = 6.198, P = 0.01279). (3) In DCC, the delivery rates of short CCs (18 cases), thin CCs (13 cases), and thick CCs (5 cases) were 17% (3/18), 54% (7/13), and 20% (1/5), respectively, with good outcomes observed in 0% (0/3), 71% (5/7), and 0% (0/1), respectively. P/LP variants were found in 6/17 cases of short CC, 3/12 cases of thin CC, and 2/5 cases of thick CC. CONCLUSIONS Fetuses with DCC or PACC combined with other structural abnormalities had a poor long-term prognosis compared with the isolated group. Patients with thin CCs had a higher probability of a good prognosis than those with short or thick CCs.
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Affiliation(s)
- Ruina Huang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, 100034, China
| | - Junya Chen
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, 100034, China.
| | - Xinlin Hou
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
| | - Lili Liu
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
| | - Guoyu Sun
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
| | - Hong Pan
- Department of Central Laboratory, Peking University First Hospital, Beijing, 100034, China
| | - Yinan Ma
- Department of Central Laboratory, Peking University First Hospital, Beijing, 100034, China
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Tarui T, Gimovsky AC, Madan N. Fetal neuroimaging applications for diagnosis and counseling of brain anomalies: Current practice and future diagnostic strategies. Semin Fetal Neonatal Med 2024; 29:101525. [PMID: 38632010 PMCID: PMC11156536 DOI: 10.1016/j.siny.2024.101525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Advances in fetal brain neuroimaging, especially fetal neurosonography and brain magnetic resonance imaging (MRI), allow safe and accurate anatomical assessments of fetal brain structures that serve as a foundation for prenatal diagnosis and counseling regarding fetal brain anomalies. Fetal neurosonography strategically assesses fetal brain anomalies suspected by screening ultrasound. Fetal brain MRI has unique technological features that overcome the anatomical limits of smaller fetal brain size and the unpredictable variable of intrauterine motion artifact. Recent studies of fetal brain MRI provide evidence of improved diagnostic and prognostic accuracy, beginning with prenatal diagnosis. Despite technological advances over the last several decades, the combined use of different qualitative structural biomarkers has limitations in providing an accurate prognosis. Quantitative analyses of fetal brain MRIs offer measurable imaging biomarkers that will more accurately associate with clinical outcomes. First-trimester ultrasound opens new opportunities for risk assessment and fetal brain anomaly diagnosis at the earliest time in pregnancy. This review includes a case vignette to illustrate how fetal brain MRI results interpreted by the fetal neurologist can improve diagnostic perspectives. The strength and limitations of conventional ultrasound and fetal brain MRI will be compared with recent research advances in quantitative methods to better correlate fetal neuroimaging biomarkers of neuropathology to predict functional childhood deficits. Discussion of these fetal sonogram and brain MRI advances will highlight the need for further interdisciplinary collaboration using complementary skills to continue improving clinical decision-making following precision medicine principles.
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Affiliation(s)
- Tomo Tarui
- Pediatric Neurology, Pediatrics, Hasbro Children's Hospital, The Warren Alpert Medical School of Brown University, Providence, RI, USA.
| | - Alexis C Gimovsky
- Maternal Fetal Medicine, Obstetrics and Gynecology, Women & Infants Hospital of Rhode Island, The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Neel Madan
- Neuroradiology, Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Karl K, Chaoui R. Tela-choroidea-to-anterior-cerebral-artery distance (TACAD): novel marker on color Doppler to identify fetuses with complete or partial agenesis of corpus callosum. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2023; 62:701-706. [PMID: 37265109 DOI: 10.1002/uog.26275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/18/2023] [Accepted: 05/07/2023] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To assess objectively the course of the anterior cerebral artery (ACA) by measuring its distance to the tela choroidea in the midsagittal view, and to compare this distance in normal fetuses with that in those with agenesis of the corpus callosum (ACC), a condition known to be associated with an abnormal course of the ACA. METHODS The tela-choroidea-to-anterior-cerebral-artery distance (TACAD) was measured in the midsagittal view of the brain on color Doppler, between the anterior border of the tela choroidea and the ACA at the level of the callosal genu. Reference ranges in relation to gestational age were established in a prospective, cross-sectional study of 253 normal healthy fetuses between 19 and 36 weeks of gestation. The study group included fetuses with complete ACC (n = 28) or partial ACC (n = 18). RESULTS TACAD of normal fetuses showed an increase during the second half of pregnancy, with a mean value of 10.1 mm and 14.2 mm at 22 and 30 weeks of gestation, respectively. All (28/28) fetuses with complete ACC and 83% (15/18) of those with partial ACC had significantly shorter TACAD, with mean values of 3.9 mm and 6.6 mm, respectively. CONCLUSIONS TACAD is a measurement that is simple to obtain during fetal color Doppler neurosonography, which enables quantification of the course of the ACA and pericallosal artery. TACAD is shorter in fetuses with complete or partial ACC than in normal fetuses and provides an objective, quantifiable value, rather than merely descriptive information. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- K Karl
- Center for Prenatal Diagnosis Munich, Munich, Germany
- Department of Obstetrics and Gynecology, Ludwig-Maximilians-University, Munich, Germany
| | - R Chaoui
- Center for Prenatal Diagnosis and Human Genetics, Berlin, Germany
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Mandine N, Tavernier E, Hülnhagen T, Maréchal B, Kober T, Tauber C, Guichard M, Castelnau P, Morel B. Corpus callosum in children with neurodevelopmental delay: MRI standard qualitative assessment versus automatic quantitative analysis. Eur Radiol Exp 2023; 7:61. [PMID: 37833469 PMCID: PMC10575841 DOI: 10.1186/s41747-023-00375-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/07/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND The corpus callosum (CC) is a key brain structure. In children with neurodevelopmental delay, we compared standard qualitative radiological assessments with an automatic quantitative tool. METHODS We prospectively enrolled 73 children (46 males, 63.0%) with neurodevelopmental delay at single university hospital between September 2020 and September 2022. All of them underwent 1.5-T brain magnetic resonance imaging (MRI) including a magnetization-prepared 2 rapid acquisition gradient echoes - MP2RAGE sequence. Two radiologists blindly reviewed the images to classify qualitatively the CC into normal, hypoplasic, hyperplasic, and/or dysgenetic classes. An automatic tool (QuantiFIRE) was used to provide brain volumetry and T1 relaxometry automatically as well as deviations of those parameters compared with a healthy age-matched cohort. The MRI reference standard for CC volumetry was based on the Garel et al. study. Cohen κ statistics was used for interrater agreement. The radiologists and QuantiFIRE's diagnostic accuracy were compared with the reference standard using the Delong test. RESULTS The CC was normal in 42 cases (57.5%), hypoplastic in 20 cases (27.4%), and hypertrophic in 11 cases (15.1%). T1 relaxometry values were abnormal in 26 children (35.6%); either abnormally high (18 cases, 24.6%) or low (8 cases, 11.0%). The interrater Cohen κ coefficient was 0.91. The diagnostic accuracy of the QuantiFIRE prototype was higher than that of the radiologists for hypoplastic and normal CC (p = 0.003 for both subgroups, Delong test). CONCLUSIONS An automated volumetric and relaxometric assessment can assist the evaluation of brain structure such as the CC, particularly in the case of subtle abnormalities. RELEVANCE STATEMENT Automated brain MRI segmentation combined with statistical comparison to normal volume and T1 relaxometry values can be a useful diagnostic support tool for radiologists. KEY POINTS • Corpus callosum abnormality detection is challenging but clinically relevant. • Automated quantitative volumetric analysis had a higher diagnostic accuracy than that of visual appreciation of radiologists. • Quantitative T1 relaxometric analysis might help characterizing corpus callosum better.
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Affiliation(s)
- Natacha Mandine
- Pediatric Radiology Department, CHRU of Tours, Clocheville Hospital, Tours, France
| | - Elsa Tavernier
- Clinical Investigation Center, INSERM 1415, CHRU Tours, Tours, France
| | - Till Hülnhagen
- Advanced Clinical Imaging Technology, Siemens Healthineers International, Lausanne, Switzerland
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Bénédicte Maréchal
- Advanced Clinical Imaging Technology, Siemens Healthineers International, Lausanne, Switzerland
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Tobias Kober
- Advanced Clinical Imaging Technology, Siemens Healthineers International, Lausanne, Switzerland
- Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- LTS5, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Clovis Tauber
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Marine Guichard
- Pediatric Neurology Department, CHRU of Tours, Clocheville Hospital, Tours, France
| | - Pierre Castelnau
- Pediatric Neurology Department, CHRU of Tours, Clocheville Hospital, Tours, France
| | - Baptiste Morel
- Pediatric Radiology Department, CHRU of Tours, Clocheville Hospital, Tours, France.
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France.
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Akbas H, Guven ESG, Guven S, Kizilirmak R, Albayrak M, Aydogan Z, Kul S. Evaluation of the height of the corpus callosum body region in fetal meningomyelocele malformation. J Gynecol Obstet Hum Reprod 2023; 52:102619. [PMID: 37295771 DOI: 10.1016/j.jogoh.2023.102619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 05/26/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023]
Abstract
PURPOSE To investigate height of the corpus callosum (CC) in order to describe the corpus callosum anomalies in fetuses with meningomyelocele (MMC) and compare these findings with the corpus callosum of healthy fetuses. METHODS In this study, fetal MRI examinations were performed on 44 fetal MMC malformation cases. As the control group, 34 fetal MRI examinations, which were anatomically normal, were evaluated retrospectively. In the study group, lateral ventricle diameter, the level and diameter of the MMC defect, and CC height were measured. In the control group, CC height and lateral ventricular diameter were measured. RESULTS The mean CC body height was 1.36 mm in the study group, and 2.48 mm in the control group. The height of the CC body region of the study population was inclined to be thinner compared with the control population (p<0.001). CONCLUSIONS The fact that the height of the CC body region was found to be thinner in fetal MRI in cases of MMC compared with normal fetuses suggests that various callosal anomalies are uncertain, investigation of additional callosal anomalies may be beneficial in the decision for the continuation of pregnancy, and termination or intrauterine surgery in cases with MMC. Further large case group studies are needed.
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Affiliation(s)
- Humeyra Akbas
- Department of Perinatology, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey.
| | | | - Suleyman Guven
- Department of Gynecology and Obstetrics, Karadeniz Technical University School of Medicine, Trabzon, Turkey
| | - Rukiye Kizilirmak
- Department of Perinatology, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey
| | - Mehmet Albayrak
- Department of Perinatology, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey
| | - Zeynep Aydogan
- Department of Radiology, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey
| | - Sibel Kul
- Department of Radiology, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey
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Nguyen T, Heide S, Guilbaud L, Valence S, Perre SV, Blondiaux E, Keren B, Quenum-Miraillet G, Jouannic JM, Mandelbrot L, Picone O, Guet A, Tsatsaris V, Milh M, Girard N, Vincent M, Nizon M, Poirsier C, Vivanti A, Benachi A, Portes VD, Guibaud L, Patat O, Spentchian M, Frugère L, Héron D, Garel C. Abnormalities of the corpus callosum. Can prenatal imaging predict the genetic status? Correlations between imaging phenotype and genotype. Prenat Diagn 2023; 43:746-755. [PMID: 37173814 DOI: 10.1002/pd.6382] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
OBJECTIVE Recent studies have evaluated prenatal exome sequencing (pES) for abnormalities of the corpus callosum (CC). The objective of this study was to compare imaging phenotype and genotype findings. METHOD This multicenter retrospective study included fetuses with abnormalities of the CC between 2018 and 2020 by ultrasound and/or MRI and for which pES was performed. Abnormalities of the CC were classified as complete (cACC) or partial (pACC) agenesis of the CC, short CC (sCC), callosal dysgenesis (CD), interhemispheric cyst (IHC), or pericallosal lipoma (PL), isolated or not. Only pathogenic (class 5) or likely pathogenic (class 4) (P/LP) variants were considered. RESULTS 113 fetuses were included. pES identified P/LP variants for 3/29 isolated cACC, 3/19 isolated pACC, 0/10 isolated sCC, 5/10 isolated CD, 5/13 non-isolated cACC, 3/6 non-isolated pACC, 8/11 non-isolated CD and 0/12 isolated IHC and PL. Associated cerebellar abnormalities were significantly associated with P/LP variants (OR = 7.312, p = 0.027). No correlation was found between phenotype and genotype, except for fetuses with a tubulinopathy and an MTOR pathogenic variant. CONCLUSIONS P/LP variants were more frequent in CD and in non-isolated abnormalities of the CC. No such variants were detected for fetuses with isolated sCC, IHC and PL.
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Affiliation(s)
- Toan Nguyen
- Service de radiologie pédiatrique, Hôpital Armand-Trousseau, Médecine Sorbonne Université, APHP, DMU DIAMENT, GRC Images, Paris, France
| | - Solveig Heide
- Service de génétique médicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Lucie Guilbaud
- Service de médecine fœtale, Hôpital Armand-Trousseau, Sorbonne Université, APHP, DMU ORIGYNE, Paris, France
| | | | - Saskia Vande Perre
- Service de radiologie pédiatrique, Hôpital Armand-Trousseau, Médecine Sorbonne Université, APHP, DMU DIAMENT, GRC Images, Paris, France
| | - Eléonore Blondiaux
- Service de radiologie pédiatrique, Hôpital Armand-Trousseau, Médecine Sorbonne Université, APHP, DMU DIAMENT, GRC Images, Paris, France
| | - Boris Keren
- Service de génétique médicale, Hôpital Pitié-Salpêtrière, Paris, France
| | | | - Jean-Marie Jouannic
- Service de médecine fœtale, Hôpital Armand-Trousseau, Sorbonne Université, APHP, DMU ORIGYNE, Paris, France
| | - Laurent Mandelbrot
- Service de gynécologie obstétrique, Hôpital Louis-Mourier, Colombes, France
| | - Olivier Picone
- Service de gynécologie obstétrique, Hôpital Louis-Mourier, Colombes, France
| | - Agnès Guet
- Service de neuropédiatrie, Hôpital Louis-Mourier, Colombes, France
| | - Vassilis Tsatsaris
- Service de gynécologie obstétrique, Hôpital Cochin-Port Royal, Paris, France
| | - Mathieu Milh
- Service de neuropédiatrie, CHU de Marseille, AP-HM, Marseille, France
| | - Nadine Girard
- Service de neuroradiologie, CHU de Marseille, AP-HM, Marseille, France
| | | | | | | | - Alexandre Vivanti
- Service de gynécologie obstétrique, CHU Antoine Béclère, Clamart, France
| | - Alexandra Benachi
- Service de gynécologie obstétrique, CHU Antoine Béclère, Clamart, France
| | | | - Laurent Guibaud
- Service d'imagerie pédiatrique et fœtale, Hôpital Femme Mère Enfant, Lyon, France
| | - Olivier Patat
- Service de génétique médicale, Hôpital Purpan, Toulouse, France
| | | | - Lisa Frugère
- Service de génétique médicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Delphine Héron
- Service de génétique médicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Catherine Garel
- Service de radiologie pédiatrique, Hôpital Armand-Trousseau, Médecine Sorbonne Université, APHP, DMU DIAMENT, GRC Images, Paris, France
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Moradi B, Taherian R, Tahmasebpour AR, Sanei Taheri M, Kazemi MA, Pak N, Shirazi M, Radmanesh A, Oztekin O, Arab-Ahmadi M. Fetal corpus callosum abnormalities: Ultrasound and magnetic resonance imaging role. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:989-1003. [PMID: 35488776 DOI: 10.1002/jcu.23212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 03/19/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
The corpus callosum (CC) is the major interhemispheric commissure and its abnormalities include agenesis, hypoplasia, and hyperplasia. The CC anomalies are typically related to other central nervous system (CNS) or extra-CNS malformations. The antenatal diagnosis of complete CC agenesis is easy after mid-trimester by ultrasound (US) even in the axial plane. The non-visualization of cavum septum pellucidum and colpocephaly are critical signs in the axial view. More subtle findings (i.e., hypoplasia and partial agenesis) might also be recognized antenatally. In this review, the focus was given on the prenatal diagnosis of CC abnormalities in US and magnetic resonance imaging.
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Affiliation(s)
- Behnaz Moradi
- Department of Radiology, Yas Complex Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Taherian
- Department of Radiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Morteza Sanei Taheri
- Department of Radiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Kazemi
- Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran
- Department of Radiology, Amir Alam Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Pak
- Department of Radiology, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboobeh Shirazi
- Maternal Fetal and Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Radmanesh
- Department of Radiology, School of Medicine, New York University, New York, New York, USA
| | - Ozgur Oztekin
- Radiology Department, Izmir Education and Research Hospital, Izmir, Turkey
| | - Mehran Arab-Ahmadi
- Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran
- Department of Radiology, Tehran University of Medical Sciences, Tehran, Iran
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10
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Agrawal S, Al-Refai A, Abbasi N, Kulkarni AV, Pruthi V, Drake J, Ryan G, Van Mieghem T. Correlation of fetal ventricular size and need for postnatal cerebrospinal fluid diversion surgery in open spina bifida. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2022; 59:799-803. [PMID: 34523765 DOI: 10.1002/uog.24767] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/23/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES Open spina bifida is a common cause of hydrocephalus in the postnatal period. In-utero closure of the fetal spinal defect decreases the need for postnatal cerebrospinal fluid (CSF) diversion surgery. Good prenatal predictors of the need for postnatal CSF diversion surgery are currently lacking. In this study, we aimed to assess the association of fetal ventriculomegaly and its progression over the course of pregnancy with the rate of postnatal hydrocephalus requiring intervention. METHODS In this retrospective study, fetuses with a prenatal diagnosis of open spina bifida were assessed longitudinally. Ventricular diameter, as well as other potential predictors of the need for postnatal CSF diversion surgery, were compared between fetuses undergoing prenatal closure and those undergoing postnatal repair. RESULTS The diameter of the lateral ventricle increased significantly throughout gestation in both groups, but there was no difference in maximum ventricular diameter at first or last assessment between fetuses undergoing prenatal closure and those undergoing postnatal repair. There was no significant difference in the rate of progression of ventriculomegaly between the two groups, with a mean progression rate of 0.83 ± 0.5 mm/week in the prenatal-repair group and 0.6 ± 0.6 mm/week in the postnatal-repair group (P = 0.098). Fetal repair of open spina bifida was associated with a lower rate of postnatal CSF diversion surgery (P < 0.001). In all subjects, regardless of whether they had prenatal or postnatal surgery, the severity of ventriculomegaly at first and last assessments was associated independently with the need for postnatal CSF diversion surgery (P = 0.005 and P = 0.001, respectively), with a greater need for surgery in fetuses with larger ventricular size, even after controlling for gestational age at assessment. CONCLUSIONS In fetuses with open spina bifida, fetal ventricular size increases regardless of whether spina bifida closure is performed prenatally or postnatally, but the need for CSF diversion surgery is significantly lower in those undergoing prenatal repair. Ventriculomegaly is associated independently with the need for postnatal CSF diversion in fetuses with open spina bifida, irrespective of timing of closure. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- S Agrawal
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
| | - A Al-Refai
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
- Maternal Fetal Medicine Division, Department of Obstetrics and Gynaecology, College of Medicine, King Saud bin Abdulaziz University for Health Sciences - Ministry of National Guard Health Affairs, Jeddah, Kingdom of Saudi Arabia
| | - N Abbasi
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
- Ontario Fetal Centre, Toronto, Canada
| | - A V Kulkarni
- Division of Neurosurgery, Hospital for Sick Children and University of Toronto, Toronto, Canada
- Ontario Fetal Centre, Toronto, Canada
| | - V Pruthi
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
| | - J Drake
- Division of Neurosurgery, Hospital for Sick Children and University of Toronto, Toronto, Canada
- Ontario Fetal Centre, Toronto, Canada
| | - G Ryan
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
- Ontario Fetal Centre, Toronto, Canada
| | - T Van Mieghem
- Fetal Medicine Unit, Department of Obstetrics & Gynaecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
- Ontario Fetal Centre, Toronto, Canada
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11
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D'Ambrosio V, Boccherini C, Manganaro L, Panici PB, Cellitti R, Vena F, Pajno C, Corno S, Brunelli R, Giancotti A. Hypoplasia of the Corpus Callosum: A Single Center Experience and a Concise Literature Review. Fetal Pediatr Pathol 2021; 40:626-637. [PMID: 32070177 DOI: 10.1080/15513815.2020.1723148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AimCorpus callosum hypoplasia is described as a fully formed corpus callosum with reduced thickness. Our purpose is to evaluate the current knowledge about this anomaly including it's effect on the neurodevelopmental outcome and to report our single center experience. Methods: PubMed, Medline and reference lists were searched using combinations of these terms: "Hypoplasia of corpus callosum and prenatal diagnosis" and "neurodevelopmental outcome". Results: Eleven studies were included, with a final population of 48 patients (45 cases from literature plus 3 of our own cases). Hypoplasia of the corpus callosum was detected by ultrasound scan alone in 77% of cases: magnetic resonance confirmed the ultrasound suspicion in the remaining 23% of cases. Isolated form was detected in 31% cases. Adverse fetal outcomes occurred in 62% of cases, while 38% of cases were born alive. The neurodevelopmental outcome was found to be normal in 33% of cases. Conclusion: Antenatal detection of corpus callosum hypoplasia remains challenging. Counseling is difficult because neurodevelopmental outcomes are variable.
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Affiliation(s)
- Valentina D'Ambrosio
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Chiara Boccherini
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Lucia Manganaro
- Department of Radiological, Oncological and Pathological Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Pierluigi Benedetti Panici
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Raffaella Cellitti
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Flaminia Vena
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Cristina Pajno
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Sara Corno
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Roberto Brunelli
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Antonella Giancotti
- Department of Maternal and Child Health and Urologic Sciences, Umberto I Hospital, "Sapienza" University of Rome, Rome, Italy
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Özköse ZG, Bestel A, Acar D. A case of corpus callosum dysplasia with different development of the corpus callosum in the right and left brain hemispheres. Neurocase 2021; 27:477-480. [PMID: 34978270 DOI: 10.1080/13554794.2021.2017979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The corpus callosum (CC) is a thick band of nerve fibers that divides the cerebral cortex lobes into the left and right hemispheres. Prenatal diagnosis of corpus callosum agenesis (partial/total) has been described frequently in the literature. In this case report, a case of corpus callosum dysplasia with different development of the halves of the corpus callosum in the right and left brain hemispheres, which was not previously discussed in the literature, will be described. Whenever we have any doubts about CC, axial, coronal, and sagittal scans of the fetal brain should be performed with TVUSG (transvaginal ultrasonography) or TAUSG (transabdominal ultrasonography) according to the position of the fetal head, and both length and thickness should be measured.
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Affiliation(s)
- Zeynep Gedik Özköse
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Aysegul Bestel
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Deniz Acar
- Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
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13
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Single-direction diffusion-weighted imaging may be a simple complementary sequence for evaluating fetal corpus callosum. Eur Radiol 2021; 32:1135-1143. [PMID: 34331117 DOI: 10.1007/s00330-021-08176-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/20/2021] [Accepted: 06/20/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To explore the feasibility of single-direction diffusion-weighted imaging (DWI) for assessing the fetal corpus callosum (CC). METHODS This prospective study included 67 fetuses with normal CC and 35 fetuses suspected with agenesis of the corpus callosum (ACC). The MR protocols included HASTE, TrueFISP, and single-direction DWI. Two radiologists independently evaluated the optimal visibility and the contrast ratio (CR) of the normal fetal CC. The Chi-squared test or Fisher's exact test was used to compare the proportions of "good" visibility (score ≥ 3, and the CC was almost/entirely visible) between single-direction DWI and HASTE/TrueFISP. The CR difference between single-direction DWI and HASTE/TrueFISP was detected using the paired t-test. The diagnostic accuracies were determined by comparison with postnatal imaging. In fetuses suspected of ACC, we measured and compared the length and area of the mid-sagittal CC in the single-direction DWI images. RESULTS The proportion of "good" visibility in single-direction DWI was higher than that in HASTE/TrueFISP, with p < 0.0001. The mean CR from single-direction DWI was also higher than that of TrueFISP and HASTE (both with p < 0.0001). The diagnostic accuracy of the single-direction DWI combined with HASTE/TrueFisp (97.1%, 34/35) was higher than that of the Haste/TrueFISP (74.3%, 26/35) (p = 0.013). The length and area of the PACC (p < 0.001, p = 0.001, respectively) and HCC (p < 0.001, p = 0.018, respectively) groups were significantly lower than those of the normal group. CONCLUSIONS The single-direction DWI is feasible in displaying fetal CC and can be a complementary sequence in diagnosing ACC. KEY POINTS • We suggest a simple method for the display of the fetal CC. • The optimal visibility and contrast ratio from single-direction DWI were higher than those from HASTE and TrueFISP. • The diagnostic accuracy of the single-direction DWI combined with HASTE/TrueFISP sequences (97.1%, 34/35) was higher than that of the Haste/TrueFISP (74.3%, 26/35).
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Role of prenatal magnetic resonance imaging in fetuses with isolated anomalies of corpus callosum: multinational study. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:26-33. [PMID: 33596324 DOI: 10.1002/uog.23612] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/27/2021] [Accepted: 02/08/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To assess the performance of fetal magnetic resonance imaging (MRI) in detecting associated anomalies in fetuses diagnosed with isolated corpus callosal (CC) anomaly on multiplanar ultrasound evaluation of the fetal brain (neurosonography). METHODS This was a multicenter, retrospective cohort study involving 14 fetal medicine centers in Italy, UK, Portugal, Canada, Austria and Spain. Inclusion criteria were fetuses with an apparently isolated CC anomaly, defined as an anomaly of the CC and no other additional central nervous system (CNS) or extra-CNS abnormality detected on expert ultrasound, including multiplanar neurosonography; normal karyotype; maternal age ≥ 18 years; and gestational age at diagnosis ≥ 18 weeks. The primary outcome was the rate of additional CNS abnormalities detected exclusively on fetal MRI within 2 weeks following neurosonography. The secondary outcomes were the rate of additional abnormalities according to the type of CC abnormality (complete (cACC) or partial (pACC) agenesis of the CC) and the rate of additional anomalies detected only on postnatal imaging or at postmortem examination. RESULTS A total of 269 fetuses with a sonographic prenatal diagnosis of apparently isolated CC anomalies (207 with cACC and 62 with pACC) were included in the analysis. Additional structural anomalies of the CNS were detected exclusively on prenatal MRI in 11.2% (30/269) of cases, with malformations of cortical development representing the most common type of anomaly. When stratifying the analysis according to the type of CC anomaly, the rate of associated anomalies detected exclusively on MRI was 11.6% (24/207) in cACC cases and 9.7% (6/62) in pACC cases. On multivariate logistic regression analysis, only maternal body mass index was associated independently with the likelihood of detecting associated anomalies on MRI (odds ratio, 1.07 (95% CI, 1.01-1.14); P = 0.03). Associated anomalies were detected exclusively after delivery and were missed on both types of prenatal imaging in 3.9% (8/205) of fetuses with prenatal diagnosis of isolated anomaly of the CC. CONCLUSION In fetuses with isolated anomaly of the CC diagnosed on antenatal neurosonography, MRI can identify a small proportion of additional anomalies, mainly malformations of cortical development, which are not detected on ultrasound. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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15
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Diogo MC, Glatter S, Prayer D, Gruber GM, Bettelheim D, Weber M, Dovjak G, Seidl R, Kasprian G. Improved neurodevelopmental prognostication in isolated corpus callosal agenesis: fetal magnetic resonance imaging-based scoring system. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:34-41. [PMID: 32484578 PMCID: PMC8362015 DOI: 10.1002/uog.22102] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 05/07/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVES Corpus callosal agenesis (CCA) is one of the most common brain malformations and is generally associated with a good outcome when isolated. However, up to 25% of patients are at risk of neurodevelopmental delay, which currently available clinical and imaging parameters are inadequate to predict. The objectives of this study were to apply and validate a fetal magnetic resonance imaging (MRI) anatomical scoring system in a cohort of fetuses with isolated CCA and to evaluate the correlation with postnatal neurodevelopmental outcome. METHODS This was a retrospective cohort study of cases of prenatally diagnosed isolated CCA (as determined on ultrasound and MRI), with normal karyotype and with known postnatal neurodevelopmental outcome assessed by standardized testing. A fetal brain MRI anatomical scoring system based on seven categories (gyration, opercularization, temporal lobe symmetry, lamination, hippocampal position, basal ganglia and ventricular size) was developed and applied to the cohort; a total score of 0-11 points could be given, with a score of 0 representing normal anatomy. Images were scored independently by two neuroradiologists blinded to the outcome. For the purpose of assessing the correlation between fetal MRI score and neurodevelopmental outcome, neurodevelopmental test results were scored as follows: 0, 'below average' (poor outcome); 1, 'average'; and 2, 'above average' (good outcome). Spearman's rank coefficient was used to assess correlation, and inter-rater agreement in the assessment of fetal MRI score was calculated. RESULTS Twenty-one children (nine females (42.9%)) fulfilled the inclusion criteria. Thirty-seven fetal MRI examinations were evaluated. Mean gestational age was 28.3 ± 4.7 weeks (range, 20-38 weeks). All fetuses were delivered after 35 weeks' gestation with no perinatal complications. Fetal MRI scores ranged from 0 to 6 points, with a median of 3 points. Inter-rater agreement in fetal MRI score assessment was excellent (intraclass correlation coefficient, 0.959 (95% CI, 0.921-0.979)). Neurodevelopmental evaluation was performed on average at 2.6 ± 1.46 years (range, 0.5-5.8 years). There was a significant negative correlation between fetal MRI score and neurodevelopmental outcome score in the three areas tested: cognitive (ρ = -0.559, P < 0.0001); motor (ρ = -0.414, P = 0.012) and language (ρ = -0.565, P < 0.0001) skills. Using fetal MRI score cut-offs of ≤ 3 (good outcome) and ≥ 4 points (high risk for poor outcome), the correct prognosis could be determined in 20/21 (95.2% (95% CI, 77.3-99.2%)) cases. CONCLUSION By assessing structural features of the fetal brain on MRI, it may be possible to better stratify prenatally the risk of poor neurodevelopmental outcome in CCA patients. © 2020 Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- M. C. Diogo
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
- Neuroradiology DepartmentHospital Garcia de OrtaAlmadaPortugal
| | - S. Glatter
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric NeurologyMedical University of ViennaViennaAustria
| | - D. Prayer
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
| | - G. M. Gruber
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
- Department of Anatomy and BiomechanicsKarl Landsteiner University of Health SciencesKremsAustria
| | - D. Bettelheim
- Department of Gynecology and ObstetricsMedical University of ViennaViennaAustria
| | - M. Weber
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
| | - G. Dovjak
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
| | - R. Seidl
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric NeurologyMedical University of ViennaViennaAustria
| | - G. Kasprian
- Department of Radiology, Division of Neuro‐ and Musculoskeletal RadiologyMedical University of ViennaViennaAustria
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Mahallati H, Sotiriadis A, Celestin C, Millischer AE, Sonigo P, Grevent D, O'Gorman N, Bahi-Buisson N, Attié-Bitach T, Ville Y, Salomon LJ. Heterogeneity in defining fetal corpus callosal pathology: systematic review. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:11-18. [PMID: 32798278 DOI: 10.1002/uog.22179] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/22/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE Fetal anomalies of the corpus callosum (CC) have been reported in the prenatal imaging literature since 1985, and, especially when isolated, pose challenges for both the patient and fetal medicine specialist. The purpose of this study was to review systematically the literature on prenatally diagnosed abnormalities of the CC, focusing on the terminology used to describe abnormalities other than complete agenesis of the CC, and to assess the heterogeneity of the nomenclature and definitions used. METHODS This study was conducted in accordance with the PRISMA statement for reporting systematic reviews. A literature search was performed to identify prospective or retrospective case series or cohort studies, published in English, French, Italian, German or Spanish, reporting fetal imaging findings and describing anomalies of the CC. Quality and risk of bias of the studies were evaluated using the Newcastle-Ottawa scale and a modification of the scale developed by Conde-Agudelo et al. for other fetal imaging studies. The data extracted included the number of patients, the number of different anomalies identified, the descriptive names of the anomalies, and, where applicable, the definitions of the anomalies, the number of cases of each type of anomaly and the biometric charts used. Secondary tests used to confirm the diagnosis, as well as the postnatal or post-termination tests used to ascertain the diagnosis, were also recorded. RESULTS The search identified 998 records, and, after review of titles and abstracts and full review of 45 papers, 27 studies were included initially in the review, of which 24 were included in the final analysis. These 24 studies had a broad range of quality and risk of bias and represented 1135 cases of CC anomalies, of which 49% were complete agenesis and the remainder were described using the term partial agenesis or nine other terms, of which five had more than one definition. CONCLUSIONS In comparison to the postnatal literature, in the prenatal literature there is much greater heterogeneity in the nomenclature and definition of CC anomalies other than complete agenesis. This heterogeneity and lack of standard definitions in the prenatal literature make it difficult to develop large multicenter pooled cohorts of patients who can be followed in order to develop a better understanding of the genetic associations and neurodevelopmental and psychological outcomes of patients with CC anomalies. As this information is important to improve counseling of these patients, a good first step towards this goal would be to develop a simpler categorization of prenatal CC anomalies that matches better the postnatal literature. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- H Mahallati
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - A Sotiriadis
- Second Department of Obstetrics and Gynecology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - C Celestin
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - A E Millischer
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Radiologie Pédiatrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - P Sonigo
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Radiologie Pédiatrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - D Grevent
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Radiologie Pédiatrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - N O'Gorman
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - N Bahi-Buisson
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Pediatric Neurology Department, University Hospital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - T Attié-Bitach
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Neurologie Pédiatrique, Université Paris Descartes et Inserm U781, Imagine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Y Ville
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - L J Salomon
- Fetus & LUMIERE team, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
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Bernardes da Cunha S, Carneiro MC, Miguel Sa M, Rodrigues A, Pina C. Neurodevelopmental Outcomes following Prenatal Diagnosis of Isolated Corpus Callosum Agenesis: A Systematic Review. Fetal Diagn Ther 2021; 48:88-95. [PMID: 33517337 DOI: 10.1159/000512534] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/22/2020] [Indexed: 11/19/2022]
Abstract
Abnormalities of corpus callosum are one of the most common brain anomalies. Fetuses with isolated corpus callosum agenesis (CCA) have a better prognosis than those with additional anomalies. However, unpredictable neurodevelopmental outcomes of truly isolated CCA make prenatal counseling a challenge. The aim of this review is to evaluate neurodevelopmental outcomes in children with prenatal diagnosis of isolated CCA. Controlled clinical trials published between May 23, 2009, and May 23, 2019, using the MeSH term "agenesis of corpus callosum" were reviewed. A total of 942 articles were identified, and 8 studies were included in the systematic review depending on the inclusion criteria. These studies included 217 fetuses with isolated CCA and no other anomalies at prenatal assessment. Neurodevelopmental outcome was reported to be normal in 83 children with a prenatal diagnosis of isolated CCA confirmed at birth within 128 completed assessments. About 45 children presented borderline, moderate, or severe neurodevelopmental outcome. In this review, neurodevelopment was favorable in two-thirds of the cases, but mild disabilities emerged in older children. Despite this, disabilities can occur later beyond school age and a low risk of severe cognitive impairment exists. Our study highlights the essential early diagnosis and proper supportive therapy.
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Affiliation(s)
- Sara Bernardes da Cunha
- Gynaecology and Obstetrics Department, Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal,
| | - Maria Carolina Carneiro
- Gynaecology and Obstetrics Department, Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal
| | | | - Andrea Rodrigues
- Occupational Medicine, Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal
| | - Carla Pina
- Gynaecology and Obstetrics Department, Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal
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Youssef A, Pilu G. Brain views that benefit from three-dimensional ultrasound. Curr Opin Obstet Gynecol 2021; 33:135-142. [PMID: 33399387 DOI: 10.1097/gco.0000000000000689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Fetal central nervous system malformations are among the most common congenital anomalies. Whereas simple axial views are sufficient for basic fetal brain examination, other important views are essential for a more detailed examination, which are sometimes challenging to obtain. Three-dimensional ultrasound can be helpful in obtaining standardized and reproducible images of many difficult fetal brain views. The aim of the present review is to explore the most recent evidence on the utility and technique of three-dimensional ultrasound in the examination of the fetal brain, with particular emphasis on the brain views that benefit from three-dimensional ultrasound. RECENT FINDINGS The article describes the various techniques of acquisition and analyses of three-dimensional ultrasound volumes of the fetal brain and their usefulness in the assessment of normal and abnormal fetal brain anatomy. Three-dimensional ultrasound has also permitted the application of many new technologies, such as artificial intelligence and deep machine learning. Recently, thanks to high-quality three-dimensional ultrasound, fetal cortical development can be assessed quantitatively and reliably. SUMMARY Three dimensional ultrasound can help as a complementary tool to two-dimensional ultrasound in the assessment of the fetal brain development and malformations. In addition, it paves the way for the application of promising technologies in the evaluation of fetal brain. VIDEO ABSTRACT A video summarizing the findings of the article. The video illustrates the various approaches and techniques applied for the examination of the fetal brain using three-dimensional ultrasound. Furthermore, the advantages and future perspectives of the application of three-dimensional ultrasound in the examination of the fetal brain are discussed, http://links.lww.com/COOG/A74.
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Affiliation(s)
- Aly Youssef
- Department of Obstetrics and Gynecology, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
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Sileo FG, Di Mascio D, Rizzo G, Caulo M, Manganaro L, Bertucci E, Masmejan S, Liberati M, D'Amico A, Nappi L, Buca D, Van Mieghem T, Khalil A, D'Antonio F. Role of prenatal magnetic resonance imaging in fetuses with isolated agenesis of corpus callosum in the era of fetal neurosonography: A systematic review and meta-analysis. Acta Obstet Gynecol Scand 2021; 100:7-16. [PMID: 32652537 DOI: 10.1111/aogs.13958] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/28/2020] [Accepted: 07/07/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Corpus callosum agenesis (ACC) is frequently diagnosed during fetal life; its prognosis depends also on additional anomalies. The additional value of fetal magnetic resonance imaging (MRI) in fetuses with "isolated" complete (cACC) and partial (pACC) agenesis of the corpus callosum on ultrasound is still debated. MATERIAL AND METHODS We performed a systematic literature review and meta-analysis including fetuses with a prenatal diagnosis of cACC and pACC without associated structural anomalies on ultrasound, undergoing fetal MRI. The primary outcome was the rate of additional anomalies detected at fetal MRI. Further analyses assessed the effect of type of ultrasound assessment (neurosonography vs standard axial assessment), gestational age at fetal MRI and rate of postnatally detected brain anomalies. Random-effect meta-analyses of proportions were used to analyze the data. RESULTS Fourteen studies (798 fetuses) were included. In cases with isolated cACC, 10.9% (95% CI 4.1-20.6) and 4.3% (95% CI 1.4-8.8) additional anomalies were detected by fetal MRI and postnatally, respectively. Stratifying according to the type of ultrasound assessment, the rate of associated anomalies detected only on fetal MRI was 5.7% (95% CI 0.5-16.0) with dedicated neurosonography and 18.5% (95% CI 7.8-32.4) with a standard axial assessment. In fetuses with isolated pACC, 13.4% (95% CI 4.0-27.0) and 16.2% (95% CI 5.9-30.3) additional anomalies were detected by fetal MRI or postnatally, respectively. Stratifying according to the type of ultrasound assessment, the rate of associated anomalies detected only on fetal MRI was 11.4% (95% CI 2.7-25.0) when dedicated neurosonography was performed. Cortical and posterior fossa anomalies represented the most common anomalies missed at ultrasound with both cACC and pACC. Due to the very small number of included cases, stratification according to early (<24 weeks of gestation) and late (>24 weeks) fetal MRI could not be done for either cACC or pACC. CONCLUSIONS The rate of associated anomalies detected exclusively at fetal MRI in isolated ACC undergoing neurosonography is lower than previously reported. Cortical and posterior fossa anomalies are among the most common anomalies detected exclusively at MRI, thus confirming the crucial role of fetal MRI in determining the prognosis of these fetuses. However, some anomalies still go undetected prenatally and this should be stressed during parental counseling.
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Affiliation(s)
- Filomena Giulia Sileo
- Fetal Medicine Unit, Saint George's Hospital, London, UK
- Prenatal Medicine Unit, Obstetrics and Gynecology Unit, Department of Medical and Surgical Sciences for Mother, Child and Adult, University of Modena and Reggio Emilia, Modena, Italy
| | - Daniele Di Mascio
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Rizzo
- Division of Maternal and Fetal Medicine, Ospedale Cristo Re, University of Rome Tor Vergata, Rome, Italy
- Department of Obstetrics and Gynecology, The First I.M. Sechenov Moscow State Medical University, Moscow, Russia
| | - Massimo Caulo
- ITAB Institute of Advanced Biomedical Technologies, University "G. d'Annunzio", Chieti, Italy
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio", SS Annunziata Hospital, Chieti, Italy
| | - Lucia Manganaro
- Department of Radiology, Sapienza University of Rome, Rome, Italy
| | - Emma Bertucci
- Prenatal Medicine Unit, Obstetrics and Gynecology Unit, Department of Medical and Surgical Sciences for Mother, Child and Adult, University of Modena and Reggio Emilia, Modena, Italy
| | - Sophie Masmejan
- Obstetrics Unit, Department of Mother and Child, Center Hospitalier Universitaire Vaudois, Lausanne, Switzerland
- Fetal Medicine Unit, Department of Obstetrics and Gynecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
| | - Marco Liberati
- Center for Fetal Care and High-risk Pregnancy, Department of Obstetrics and Gynecology, University Hospital of Chieti, Chieti, Italy
| | - Alice D'Amico
- Center for Fetal Care and High-risk Pregnancy, Department of Obstetrics and Gynecology, University Hospital of Chieti, Chieti, Italy
| | - Luigi Nappi
- Department of Obstetrics and Gynecology, University of Foggia, Foggia, Italy
| | - Danilo Buca
- Department of Obstetrics and Gynecology, University of Foggia, Foggia, Italy
| | - Tim Van Mieghem
- Fetal Medicine Unit, Department of Obstetrics and Gynecology, Mount Sinai Hospital and University of Toronto, Toronto, Canada
| | - Asma Khalil
- Fetal Medicine Unit, Saint George's Hospital, London, UK
- Vascular Biology Research Center, Molecular and Clinical Sciences Research Institute, St George's Hospital, University of London, London, UK
| | - Francesco D'Antonio
- Center for Fetal Care and High-risk Pregnancy, Department of Obstetrics and Gynecology, University Hospital of Chieti, Chieti, Italy
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Scoping Review of the Prenatal Diagnosis of Agenesis of the Corpus Callosum. J Obstet Gynecol Neonatal Nurs 2020; 49:423-436. [PMID: 32687791 DOI: 10.1016/j.jogn.2020.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To map and summarize the literature related to the prenatal diagnosis of agenesis of the corpus callosum (ACC) to inform nursing practice. DATA SOURCES We searched MEDLINE, CINAHL, PyscINFO, and Academic Search Complete with the use of strings of curated terms to cover the broad ACC nomenclature. Documents were published in English between 2009 and June 1, 2020. We also hand searched the reference lists of included documents. STUDY SELECTION We screened 582 abstracts and retrieved the full texts of primary research articles, reviews, discussion papers, and peer-reviewed book chapters if the abstracts specifically mentioned ACC and the prenatal period. We excluded case reports, conference and poster abstracts, papers on broader anomalies, and animal studies. We reviewed 84 full-text documents and identified 61 for inclusion. DATA EXTRACTION We charted the data through an iterative process under headings for location, article type, study design, participant age, ACC type, recruitment, method, tools/assessments, results, key recommendations, gestational age at diagnosis, termination of pregnancy rate, the definition of isolated ACC, and our notes of critique of the document. DATA SYNTHESIS We constructed a narrative synthesis from thematically arranged data. In the included documents, ACC was diagnosed between 17 and 38 weeks gestation and was frequently described as heterogeneous because of different causes, presentations, and outcomes. Whether the ACC was isolated as the only anomaly or present with other anomalies was considered the key factor for prenatal counseling. However, the definition of isolated ACC was inconsistent. CONCLUSION The inconsistent nomenclature and definitions of an isolated presentation of ACC increase the ambiguity in the prenatal diagnosis and must be considered when the outcome and diagnostic efficacy studies are interpreted. There is an absence of research on parents' experiences of prenatal diagnoses of ACC to inform holistic nursing interventions and the provision of psychosocial support.
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21
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Hunt D, Dighe M, Gatenby C, Studholme C. Automatic, Age Consistent Reconstruction of the Corpus Callosum Guided by Coherency From In Utero Diffusion-Weighted MRI. IEEE TRANSACTIONS ON MEDICAL IMAGING 2020; 39:601-610. [PMID: 31395540 PMCID: PMC7189742 DOI: 10.1109/tmi.2019.2932681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Reconstruction of white matter connectivity in the fetal brain from in utero diffusion-weighted magnetic resonance imaging (MRI) faces many challenges, including subject motion, small anatomical scale, and limited image resolution and signal. These issues are compounded by the need to track significant changes in structural connectivity throughout development. We present an automated method for improved reliability and completeness of tract extraction across a wide range of gestational ages, based on the geometry of coherent patterns in streamline tractography, and apply it to the reconstruction of the corpus callosum. This method, focused specifically at addressing the challenges of fetal brain imaging, avoids depending on a tractography atlas, and handles variations in size, shape, and tissue properties of developing brains, both between subjects and across ages. Although tractography from in utero MRI generally suffers from a significant number of misleading and missing pathways, we demonstrate the feasibility of extracting the coherent bundle of the corpus callosum while avoiding inappropriate diversions into other tracts.
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22
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Tarui T, Madan N, Farhat N, Kitano R, Ceren Tanritanir A, Graham G, Gagoski B, Craig A, Rollins CK, Ortinau C, Iyer V, Pienaar R, Bianchi DW, Grant PE, Im K. Disorganized Patterns of Sulcal Position in Fetal Brains with Agenesis of Corpus Callosum. Cereb Cortex 2019; 28:3192-3203. [PMID: 30124828 DOI: 10.1093/cercor/bhx191] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 07/11/2017] [Indexed: 12/22/2022] Open
Abstract
Fetuses with isolated agenesis of the corpus callosum (ACC) are associated with a broad spectrum of neurodevelopmental disability that cannot be specifically predicted in prenatal neuroimaging. We hypothesized that ACC may be associated with aberrant cortical folding. In this study, we determined altered patterning of early primary sulci development in fetuses with isolated ACC using novel quantitative sulcal pattern analysis which measures deviations of regional sulcal features (position, depth, and area) and their intersulcal relationships in 7 fetuses with isolated ACC (27.1 ± 3.8 weeks of gestation, mean ± SD) and 17 typically developing (TD) fetuses (25.7 ± 2.0 weeks) from normal templates. Fetuses with ACC showed significant alterations in absolute sulcal positions and relative intersulcal positional relationship compared to TD fetuses, which were not detected by traditional gyrification index. Our results reveal altered sulcal positional development even in isolated ACC that is present as early as the second trimester and continues throughout the fetal period. It might originate from altered white matter connections and portend functional variances in later life.
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Affiliation(s)
- Tomo Tarui
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Division of Newborn Medicine, Boston Children's Hospital,Harvard Medical School, Boston, MA, USA.,Mother Infant Research Institute, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA.,Department of Pediatrics, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Neel Madan
- Department of Radiology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Nabgha Farhat
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Division of Newborn Medicine, Boston Children's Hospital,Harvard Medical School, Boston, MA, USA
| | - Rie Kitano
- Mother Infant Research Institute, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Asye Ceren Tanritanir
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Division of Newborn Medicine, Boston Children's Hospital,Harvard Medical School, Boston, MA, USA
| | - George Graham
- Department of Obstetrics and Gynecology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Borjan Gagoski
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alexa Craig
- Department of Pediatrics, Maine Medical Center, ME, USA
| | - Caitlin K Rollins
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Cynthia Ortinau
- Department of Pediatrics Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.,Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Vidya Iyer
- Mother Infant Research Institute, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Rudolph Pienaar
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Diana W Bianchi
- Medical Genetics Branch, National Human Genome Research Institute, Bethesda, MD, USA
| | - P Ellen Grant
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Division of Newborn Medicine, Boston Children's Hospital,Harvard Medical School, Boston, MA, USA.,Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kiho Im
- Fetal Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Division of Newborn Medicine, Boston Children's Hospital,Harvard Medical School, Boston, MA, USA
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23
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Tepper R, Leibovitz Z, Garel C, Sukenik-Halevy R. A new method for evaluating short fetal corpus callosum. Prenat Diagn 2019; 39:1283-1290. [PMID: 31671211 DOI: 10.1002/pd.5598] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/27/2019] [Accepted: 10/09/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Sonographic diagnosis of short corpus callosum (SCC) is based on measurement of a short for gestational age antero-posterior length of the corpus callosum (CC) in the midsagittal plane. We suggest a new method for evaluating SCC without referring to biometry tables. METHODS We measured the ratio between the CC length and the internal cranial occipitofrontal dimension (ICOFD) in the midsagittal plane in 399 normal fetuses at 20 + 6 to 35 + 3 weeks of gestation and in 31 fetuses with a diagnosis of a SCC and compared the mean ratio between two groups. The impact of cephalic biometric parameters, fetal presentation, and gender was assessed. RESULTS The ICOFD/CC length for normal pregnancies was constant throughout the pregnancy (2.35 ± 0.11). There was no correlation between the ICOFD/CC length and cephalic index, Biparietal Diameter (BPD), head circumference, fetal sex, or fetal presentation. The ratio of pregnancies with SCC was significantly higher: 3.20 ± 0.84 (P < .0001). CONCLUSION The ICOFD/CC length practically does not change throughout a normal pregnancy. The ratio was significantly higher in pregnancies with SCC. Measuring this ratio during fetal anatomical scan may enable rapid evaluation of the CC without the need to refer to biometry tables.
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Affiliation(s)
- Ronnie Tepper
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Simultech Medical Simulation Center, Meir Medical Center, Kfar Saba, Israel
| | - Zvi Leibovitz
- Obstetrics and Gynecology, Ultrasound Unit, Bnai-Zion Medical Center, Haifa, Israel
| | - Catherine Garel
- Radiology, Hôpital d'Enfants Armand-Trousseau, Paris, France
| | - Rivka Sukenik-Halevy
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Genetics Institute, Rabin Medical Center, Petach Tikva, Israel
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24
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She Q, Fu F, Guo X, Tan W, Liao C. Genetic testing in fetuses with isolated agenesis of the corpus callosum. J Matern Fetal Neonatal Med 2019; 34:2227-2234. [PMID: 31450992 DOI: 10.1080/14767058.2019.1660769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE The objectives of this study were to explore genetics pathogenesis of isolated agenesis of corpus callosum (ACC) and assess the utility of chromosomal microarray analysis (CMA) for genetic diagnosis of isolated ACC. METHODS We analyzed the genomes of 16 fetuses with isolated ACC using Afymetrix CytoScan HD arrays and conducted further bioinformatic analysis for one proband fetus with an abnormal copy number variation (CNV). RESULTS Of the 16 fetal samples examined, two (12.5%) had pathogenic CNVs and three (18.75%) had variants of unknown significance. Two cases, case 2 and case 9, were found to have pathogenic CNVs. Bioinformatic analyses indicated that the CNV of one fetus (case 9) contained 115 annotated coding genes, five of which (SLC6A5, BDNF, ELP4, PAX6, and SLC1A2) have been associated with neurodevelopment. Three of these genes (SLC1A2, BDNF, and PAX6) may play a key role in ACC development. GO cluster analysis of the implicated genes revealed strong representations of protein binding and metal ion binding functions. KEGG pathway analysis pointed to four pathways: longevity regulating pathway, amyotrophic lateral sclerosis, cocaine addiction, and autophagy-animal. CONCLUSIONS BDNF, SLC1A2, and PAX6 may be involved in the development of isolated ACC. CMA is a feasible technology for prenatal diagnosis of isolated ACC.
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Affiliation(s)
- Qin She
- Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou, China.,Prenatal Diagnostic Center, The Six Affiliated Hospital, Guangzhou Medical University, Qingyuan, China
| | - Fang Fu
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Xiaoyan Guo
- Prenatal Diagnostic Center, The Six Affiliated Hospital, Guangzhou Medical University, Qingyuan, China
| | - Weihe Tan
- Prenatal Diagnostic Center, The Six Affiliated Hospital, Guangzhou Medical University, Qingyuan, China
| | - Can Liao
- Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou, China
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25
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Zhao D, Wang B, Cai A. Utility of indirect sonographic signs (including cavum septum pellucidum ratio) in midgestational screening for partial agenesis of corpus callosum. JOURNAL OF CLINICAL ULTRASOUND : JCU 2019; 47:394-398. [PMID: 30838673 DOI: 10.1002/jcu.22722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/23/2019] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
PURPOSE This study was undertaken to evaluate the performance of indirect sonographic signs in detecting partial agenesis of the corpus callosum (pACC) at midgestation, focusing on the cavum septum pellucidum (CSP) ratio. METHODS A retrospective case-controlled study of singleton pregnancies was conducted, examining fetuses diagnosed with isolated pACC and normal controls. At midgestational age, fetal head volumes were imaged with 3D US and stored for the evaluation of indirect sonographic findings in axial planes. RESULTS Fifteen normal and 15 abnormal fetuses (with pACC) were analyzed. Based on a CSP ratio < 1.5, detection of pACC increased from 66.7% (10/15) to 80% (12/15). All indirect signs proved highly suspicious for pACC (risk ratios > 1). CONCLUSION Use of indirect sonographic signs to screen for pACC at midgestation is challenging. However, a low CSP ratio may improve the detection rate, serving as a new indirect sign.
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Affiliation(s)
- Dan Zhao
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bing Wang
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ailu Cai
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China
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Stoll C, Dott B, Roth MP. Associated anomalies in cases with agenesis of the corpus callosum. Am J Med Genet A 2019; 179:2101-2111. [PMID: 31444900 DOI: 10.1002/ajmg.a.61330] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 07/19/2019] [Accepted: 08/01/2019] [Indexed: 12/11/2022]
Abstract
Agenesis of corpus callosum (ACC) is an uncommon congenital anomaly, its etiology is unclear and its pathogenesis is controversial. Cases with ACC often have other non-ACC associated congenital anomalies. The purpose of this study was to assess the prevalence and the types of these associated anomalies in a defined population. The associated anomalies in cases with ACC were collected in all live births, stillbirths, and terminations of pregnancy during 29 years in 387,067 consecutive births in the area covered by our population-based registry of congenital malformations. Of the 99 cases with ACC, representing a prevalence of 2.56 per 10,000, 73 (73.7%) had associated anomalies. There were 16 (16.2%) cases with chromosomal abnormalities, and 13 (13.2%) nonchromosomal recognized dysmorphic conditions including syndromes two each: Aicardi, Dandy-Walker, and fetal alcoholism. Forty-four (44.4%) of the cases had nonsyndromic multiple congenital anomalies (MCA). Anomalies in the musculoskeletal, the urogenital, the central nervous, the cardiovascular, and the digestive systems were the most common other anomalies in the cases with MCA. The anomalies associated with ACC could be classified into a recognizable malformation syndrome in 29 out of the 73 cases (39.7%) with associated anomalies. This study included special strengths: it is population-based, each affected child was examined by a geneticist, all elective terminations were ascertained, and the surveillance for anomalies was continued until 2 years of age. In conclusion the overall prevalence of associated anomalies, three of four cases, emphasizes the need for a screening for other anomalies in cases with ACC.
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Affiliation(s)
- Claude Stoll
- Laboratoire de Génétique Médicale, Faculté de Médecine, Strasbourg Cedex, France
| | - Beatrice Dott
- Laboratoire de Génétique Médicale, Faculté de Médecine, Strasbourg Cedex, France
| | - Marie-Paule Roth
- Laboratoire de Génétique Médicale, Faculté de Médecine, Strasbourg Cedex, France
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27
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Extending the basic fetal CNS examination at the second and third trimester scan. GINECOLOGIA.RO 2019. [DOI: 10.26416/gine.24.2.2019.2368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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28
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Leombroni M, Khalil A, Liberati M, D'Antonio F. Fetal midline anomalies: Diagnosis and counselling Part 1: Corpus callosum anomalies. Eur J Paediatr Neurol 2018; 22:951-962. [PMID: 30448279 DOI: 10.1016/j.ejpn.2018.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 12/26/2022]
Abstract
Midline anomalies encompasses a heterogeneous group of conditions caused by an abnormal process of ventral induction after the end of primary neurulation. Advances in prenatal imaging techniques have led to an increase in the detection rate of such anomalies since the first trimester of pregnancy although a significant proportion of them remain undiagnosed until birth. Ultrasound is the primary technique in detecting such anomalies while fetal magnetic resonance imaging (MRI) is commonly performed to confirm the diagnosis and detect additional anomalies, especially those involving the cortical surface of the brain, which may potentially impact post-natal outcome. Neurodevelopmental outcome of cerebral anomalies involving the midline is directly related to the type of anomaly, cause and presence of associated anomalies. However, even in case of isolated anomalies prenatal counselling is challenging. The aim of this review is to provide an up to date on the diagnosis, counselling and management of the most common supra-tentorial anomalies involving the midline and diagnosed on prenatal ultrasound.
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Affiliation(s)
- Martina Leombroni
- Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy
| | - Asma Khalil
- Fetal Medicine Unit, Division of Developmental Sciences, St. George's University of London, London, United Kingdom
| | - Marco Liberati
- Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy
| | - Francesco D'Antonio
- Womenś Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway; Department of Obstetrics and Gynaecology, University Hospital of Northern Norway, Tromsø, Norway.
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29
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Termination of pregnancy following prenatally diagnosed central nervous system malformations. Arch Gynecol Obstet 2018; 298:903-910. [PMID: 30218186 DOI: 10.1007/s00404-018-4900-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 09/06/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE To analyze fetal cerebral malformations with late termination of pregnancy (TOP) and to evaluate the rate of cases that could have been detected earlier using international recommended requirements of sonographic examination of the fetal central nervous system (CNS). MATERIALS AND METHODS Cases of singleton pregnancies above 18 + 0 weeks of gestation ending in late TOP due to fetal CNS malformations between 2002 and 2011 were retrospectively reviewed. The cases were divided into isolated and non-isolated cerebral malformations. Prevalence and timing of TOP were assessed relative to the identified malformations. RESULTS During this 10-year period, 212 (20.8%) out of 1017 late TOPs were performed in pregnancies with fetal cerebral malformations. 59 cases were excluded because of chromosomal anomalies. 86 (56.2%) of the remaining 153 cases were isolated cerebral malformations while 67 (43.8%) were non-isolated. TOP after viability (≥ 24 + 0 weeks of gestation) was performed in 61.4% (94/153). Substantial morbidity (n = 80; 52.3%) and mental retardation (n = 33, 38.4%) made up the leading prognostic groups. In about 80% of detectable anomalies, diagnosis of CNS malformation could have been made earlier by following international guidelines of fetal CNS examination at second trimester scan. CONCLUSION General implementation of ultrasound screening in maternity care can significantly reduce the number of late TOPs in Germany.
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30
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Yin H, Li Y. Diagnostic value of Omniview technique on the agenesis of corpus callosum. J Matern Fetal Neonatal Med 2018; 32:3806-3811. [PMID: 29726726 DOI: 10.1080/14767058.2018.1472230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Objective: This study aimed to discuss the diagnostic value of Omniview technique on the agenesis of corpus callosum. Methods: A total of 43 pregnant women with no obvious structural abnormality and eight pregnant women who diagnosed with agenesis of corpus callosum (ACC) were included in this study. The 2D ultrasonography and the 3D ultrasonography Omniview technique were used to carry out ultrasonic examination on 43 normal fetuses and eight fetuses with agenesis of corpus callosum (as verified through magnetic resonance), respectively. Results: The Omniview technique visually displayed the median sagittal plane of the fetus. The ROC curve of Omniview (0.999) was much higher than that of 2D ultrasonography (0.817). Rating of ACC and normal fetuses showed that the diagnostic efficiency of 3D ultrasonography Omniview technique was much higher than 2D ultrasonography. Conclusion: 3D ultrasonography Omniview technique has certain advantage in the diagnosis of agenesis of corpus callosum, and is of great significance in the prenatal screening of callosum.
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Affiliation(s)
- Hong Yin
- a Department of Ultrasound , Maternal and Child Health Care of Shandong Province, Key Laboratory of Birth Regulation and Control Technology of National Health and Family Planning Commission of China, Key Laboratory for Improving Birth Outcome Technique, Shandong Provincial Family Planning Institute of Science and Technology , Jinan , PR China
| | - Yang Li
- a Department of Ultrasound , Maternal and Child Health Care of Shandong Province, Key Laboratory of Birth Regulation and Control Technology of National Health and Family Planning Commission of China, Key Laboratory for Improving Birth Outcome Technique, Shandong Provincial Family Planning Institute of Science and Technology , Jinan , PR China
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Yeh HR, Park HK, Kim HJ, Ko TS, Won HS, Lee MY, Shim JY, Yum MS. Neurodevelopmental outcomes in children with prenatally diagnosed corpus callosal abnormalities. Brain Dev 2018; 40:634-641. [PMID: 29801921 DOI: 10.1016/j.braindev.2018.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 10/16/2022]
Abstract
OBJECTIVE Although corpus callosal abnormalities are among the most common brain malformations detected prenatally, few previous studies have described the neurodevelopmental outcomes of children with this condition. The aim of our study was to evaluate the neurodevelopmental outcomes and associated clinical features of children with corpus callosal abnormalities diagnosed by prenatal ultrasonography. METHODS Between July 2011 and July 2016, forty-nine children with corpus callosal abnormalities were born in Asan Medical Center Children's Hospital. Neurodevelopmental assessments were conducted in 40 patients at a median age of 24.8 months using the Bayley Scales of Infant Development II or the Korean Infant and Child Development Test. Patients were categorized according to their postnatal magnetic resonance imaging (MRI) findings and accompanying anomalies. Baseline characteristics and developmental outcomes of each group were compared. RESULTS Isolated agenesis or hypoplasia of the corpus callosum was found in 16 (32.7%) patients, other associated central nervous system (CNS) abnormalities were found in 28 (57.1%) patients, and non-CNS abnormalities were found in 11 (22.4%) patients. Among the 40 patients who underwent developmental assessment, 18 (45.0%) showed normal development and 10 (25.0%) showed moderate-to-severe global developmental delay. Seven of the twelve (58.3%) patients with isolated corpus callosal abnormalities showed normal development. The combination of corpus callosal abnormalities with non-CNS anomalies was significantly associated with developmental delay (odds ratio 2.5, 95% confidence interval 1.6-3.9, p = 0.001). Conversely, children with isolated corpus callosal abnormalities showed relatively favorable neurodevelopmental outcomes. CONCLUSION Appropriate evaluation and comprehensive therapeutic approaches are strongly recommended for neonates who present with corpus callosal abnormalities combined with additional anomalies.
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Affiliation(s)
- Hye-Ryun Yeh
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyo-Kyoung Park
- Department of Obstetrics & Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyun-Jin Kim
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae-Sung Ko
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hye-Sung Won
- Department of Obstetrics & Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mi-Young Lee
- Department of Obstetrics & Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Yoon Shim
- Department of Obstetrics & Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Mi-Sun Yum
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Ballardini E, Marino P, Maietti E, Astolfi G, Neville AJ. Prevalence and associated factors for agenesis of corpus callosum in Emilia Romagna (1981-2015). Eur J Med Genet 2018; 61:524-530. [PMID: 29902589 DOI: 10.1016/j.ejmg.2018.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/21/2018] [Accepted: 06/10/2018] [Indexed: 11/17/2022]
Abstract
Agenesis and hypoplasia of the corpus callosum (ACC and HCC) are heterogeneous group with a large variation in published prevalence based on few population based studies. The aim of this work is to describe prevalence, associated factors and other malformations present in cases with either agenesis or hypoplasia of the corpus callosum, using a population-based database of all malformations diagnosed in Emilia-Romagna, Italy, (the Emilia-Romagna Registry on Congenital Malformations, IMER). This registry links and integrates hospital discharge records, birth certificates with cases reported by referral clinicians to identify all structural malformations diagnosed within one year of life regarding live birth, fetal death or termination of pregnancy due to fetal malformations (TOPFA). During the study period (1981-2015) the number of cases with ACC or HCC was 255, in a reference population of 1,023,784 live births, giving an overall prevalence of 2.49 per 10,000 (1.47 per 10,000 only live birth). After 1996, with the inclusion of TOPFA in IMER registry, the overall prevalence rate increase significantly from 1.42 to 3.03 cases per 10,000 birth (p-value<0.001). Prenatal diagnosis was made in 192 cases (75.3%), at a median gestational age of 20.7 [IQR: 19.71-22.71]. Termination of pregnancy occurred in 105 of the 255 cases (41,2%). Where a prenatal diagnosis was available, 55% of cases ended in TOPFA (105/192), with higher prevalence of cases associated to central nervous system malformations and multiple birth defects, and median gestational age at diagnosis significantly less than in live birth cases (20.3 vs 29 weeks). Agenesis/hypoplasia ratio was 5.7 (217/38). The most frequently associated malformations were musculoskeletal. Trisomies were the most frequent chromosomal anomalies, in particularly trisomy18 and 13 (respectively 9/32 and 4/32 cases). Our study showed an increased risk for male infants (RR of 1.68, RR 95% CI 1.19-2.37). No differences were detected analyzing maternal age and ethnicity, and the increased risk associated to preterm birth disappeared when compared with other malformed infants. This is one of the few population based studies dealing with prevalence of agenesis and hypoplasia of corpus callosum. Prevalence is still debated, but this study adds comprehensive data, in particular inclusion of TOPFA cases. Early prenatal diagnosis, not always possible, could be crucial for decision making regarding continuation of pregnancy.
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Affiliation(s)
- Elisa Ballardini
- Neonatal Intensive Care Unit, Pediatric Section, Dep. of Medical Sciences, University of Ferrara, Italy.
| | - Pietro Marino
- Pediatric Section, Dep. of Medical Sciences, University of Ferrara, Italy
| | - Elisa Maietti
- Centre for Clinical Epidemiology, University of Ferrara, Italy
| | - Gianni Astolfi
- IMER Registry (Emilia Romagna Registry of Birth Defects), Dep. of Biomedical and Specialty Surgical Sciences, University of Ferrara, Italy
| | - Amanda J Neville
- IMER Registry (Emilia Romagna Registry of Birth Defects), Center for Clinical and Epidemiological Research, University of Ferrara, Italy
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De Keersmaecker B, Pottel H, Naulaers G, De Catte L. Sonographic Development of the Pericallosal Vascularization in the First and Early Second Trimester of Pregnancy. AJNR Am J Neuroradiol 2018; 39:589-596. [PMID: 29472298 DOI: 10.3174/ajnr.a5562] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/30/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Anomalies of the corpus callosum are rare. Routine scanning in midtrimester of the pregnancy often fails to identify defective development. The purpose of the study was to identify the pericallosal artery and all its main branching arteries during early gestation from the first trimester onward, to measure the length of the pericallosal artery during its development, and to establish a normal vascular map for each week of development. MATERIALS AND METHODS We performed a single-center prospective, longitudinal clinical study in 15 patients between 11 and 22 weeks of gestation. The origin and course of the different blood vessels were identified. RESULTS There was a linear association among gestational age, the biparietal diameter, and the length of the pericallosal artery. The curvature of the developing pericallosal artery increases linearly with the gestational age and biparietal diameter, and 4 variations of branching of the callosomarginal artery were observed. CONCLUSIONS The pericallosal artery and its branches can be identified and measured from 11 weeks on, and the pericallosal artery takes its characteristic course. A defective course or an abnormal biometry of the pericallosal artery could be an early sonographic marker of abnormal development of the corpus callosum.
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Affiliation(s)
- B De Keersmaecker
- From the Department of Fetal Medicine (B.D.K.), Universitaire Ziekenhuizen Leuven, Leuven, Belgium.,Department of Obstetrics and Gynaecology (B.D.K.), AZ Groeninge, Kortrijk, Belgium
| | - H Pottel
- Department of Public Health and Primary Care (H.P.), Katholieke Universiteit Leuven, Leuven, Belgium
| | | | - L De Catte
- Fetal Medicine (L.D.C.), University Hospitals Leuven, Leuven, Belgium.
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Neurodevelopmental outcome in prenatally diagnosed isolated agenesis of the corpus callosum. Early Hum Dev 2018; 116:9-16. [PMID: 29091783 DOI: 10.1016/j.earlhumdev.2017.10.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 11/22/2022]
Abstract
UNLABELLED Neurodevelopmental outcome in children with agenesis of the corpus callosum (ACC) is correlated with the presence or absence of associated brain abnormalities. Indeed, neurodevelopmental outcome shows severe disabilities when the ACC is not isolated whereas in isolated forms, the neurologic development is mainly normal. Contrary to data in several published studies, the prognosis remains uncertain even in isolated forms, which may lead in France to medical termination of pregnancy. OBJECTIVE To evaluate long-term neurodevelopmental outcome in children with prenatally diagnosed isolated ACC. DESIGN, SETTING AND PARTICIPANTS This is a follow-up study conducted in Normandy (France). It included a cohort of 25 children born between January 1991 and June 2016, with a prenatal diagnosis of isolated ACC and who were followed for at least two years. RESULTS The average follow-up was 8±5years. ACC was complete in 17 patients (68%), partial in 5 (20%) and hypoplastic in 3 (12%). Whereas global motor development was normal in each case, normal neurodevelopmental outcome or mild disabilities occurred in 88% children and moderate/severe neuro-disabilities were present in 12% of children. Wechsler Intelligence Scale for Children-IV evaluations and Intellectual Total Quotients were within normal range, but we observed lower scores in verbal comprehension, social judgment, executive functions. A lower score in morphosyntax was observed among 52% of children with oral language disorders. CONCLUSIONS Neurodevelopmental outcome was favorable in most of our patients with isolated ACC, but mild learning disabilities emerged in older children. Long-term follow-up until school age is essential to provide early diagnosis and appropriate care support.
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Malinger G, Paladini D, Pilu G, Timor-Tritsch IE. Fetal cerebral magnetic resonance imaging, neurosonography and the brave new world of fetal medicine. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2017; 50:679-680. [PMID: 28568972 DOI: 10.1002/uog.17538] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/18/2017] [Accepted: 05/25/2017] [Indexed: 06/07/2023]
Affiliation(s)
- G Malinger
- Division of Ultrasound in Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - D Paladini
- Fetal Medicine & Surgery Unit, G. Gaslini Children's Hospital, Genoa, Italy
| | - G Pilu
- Department of Obstetrics and Gynecology, University of Bologna, Bologna, Italy
| | - I E Timor-Tritsch
- Division of Obstetrical & Gynecological Ultrasound, Department of Obstetrics and Gynecology, NYU School of Medicine, New York, NY, USA
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Karl K, Esser T, Heling KS, Chaoui R. Cavum septi pellucidi (CSP) ratio: a marker for partial agenesis of the fetal corpus callosum. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2017; 50:336-341. [PMID: 28078790 DOI: 10.1002/uog.17409] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/14/2016] [Accepted: 01/08/2017] [Indexed: 06/06/2023]
Abstract
OBJECTIVE While complete agenesis of the corpus callosum is often suspected on fetal ultrasound due to absence of the cavum septi pellucidi (CSP), suspicion of partial agenesis of the corpus callosum (pACC) is a challenge since the CSP is almost always present. The aim of this study was to measure the length and width of the CSP and calculate the length-to-width ratio (CSP ratio), and compare these between fetuses with pACC and normal fetuses. METHODS In this retrospective case-control study, the length and width of the CSP were measured in the axial plane of the fetal head, and the CSP length-to-width ratio calculated, in 323 normal fetuses and in 20 fetuses with pACC between 20 and 34 weeks' gestation. From the normal population we constructed reference ranges in relation to biparietal diameter (BPD). For all fetuses we calculated Z-scores for the CSP ratio. RESULTS In the normal population, the length and width of the CSP increased with increasing BPD, while the CSP ratio decreased. The CSP was short (< 5th centile) in 85% (17/20) of fetuses with pACC and wide (> 95th centile) in 65% (13/20). The CSP ratio was small (< 5th centile) in 95% (19/20) of pACC fetuses, with 16/20 (80%) having a ratio below an empirical cut-off of 1.5. Analysis of Z-scores showed that fetuses with pACC had a significantly smaller CSP ratio (P < 0.0001) compared with the normal population. CONCLUSIONS Fetuses with a normal-sized corpus callosum have a rectangular-shaped CSP, with a CSP ratio > 1.5 in the second half of gestation. Most fetuses with pACC have an abnormally shaped, wide and short CSP, with a decreased CSP ratio. This simple ratio has the potential to identify fetuses at high risk for pACC. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- K Karl
- Center for Prenatal Diagnosis Munich, Munich, Germany
- Department of Obstetrics and Gynecology, Ludwig-Maximilians-University, Munich, Germany
| | - T Esser
- Center for Prenatal Diagnosis Munich, Munich, Germany
| | - K S Heling
- Center for Prenatal Diagnosis and Human Genetics, Berlin, Germany
| | - R Chaoui
- Center for Prenatal Diagnosis and Human Genetics, Berlin, Germany
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D'Antonio F, Pagani G, Familiari A, Khalil A, Sagies TL, Malinger G, Leibovitz Z, Garel C, Moutard ML, Pilu G, Bhide A, Acharya G, Leombroni M, Manzoli L, Papageorghiou A, Prefumo F. Outcomes Associated With Isolated Agenesis of the Corpus Callosum: A Meta-analysis. Pediatrics 2016; 138:peds.2016-0445. [PMID: 27581855 DOI: 10.1542/peds.2016-0445] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/16/2016] [Indexed: 11/24/2022] Open
Abstract
CONTEXT Antenatal counseling in cases of agenesis of the corpus callosum (ACC) is challenging. OBJECTIVES To ascertain the outcome in fetuses with isolated complete ACC and partial ACC. DATA SOURCES Medline, Embase, CINAHL, and Cochrane databases. STUDY SELECTION Studies reporting a prenatal diagnosis of ACC. The outcomes observed were: chromosomal abnormalities at standard karyotype and chromosomal microarray (CMA) analysis, additional anomalies detected only at prenatal MRI and at postnatal imaging or clinical evaluation, concordance between prenatal and postnatal diagnosis and neurodevelopmental outcome. DATA EXTRACTION Meta-analyses of proportions were used to combine data. RESULTS Twenty-seven studies were included. In cACC, chromosomal anomalies occurred in 4.81% (95% confidence interval [CI], 2.2-8.4) of the cases. Gross and fine motor control were abnormal in 4.40% (95% CI, 0.6-11.3) and 10.98% (95% CI, 4.1-20.6) of the cases, respectively, whereas 6.80% (95% CI, 1.7-14.9) presented with epilepsy. Abnormal cognitive status occurred in 15.16% (95% CI, 6.9-25.9) of cases. In partial ACC, the rate of chromosomal anomalies was 7.45% (95% CI, 2.0-15.9). Fine motor control was affected in 11.74% (95% CI, 0.9-32.1) of the cases, and 16.11% (95% CI, 2.5-38.2) presented with epilepsy. Cognitive status was affected in 17.25% (95% CI, 3.0-39.7) of cases. LIMITATIONS Different neurodevelopmental tools and time of follow-up of the included studies. CONCLUSIONS Children wih a prenatal diagnosis of isolated ACC show several degrees of impairment in motor control, coordination, language, and cognitive status. However, in view of the large heterogeneity in outcomes measures, time at follow-up, and neurodevelopmental tools used, large prospective studies are needed to ascertain the actual occurrence of neuropsychological morbidity of children with isolated ACC.
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Affiliation(s)
- Francesco D'Antonio
- Department of Clinical Medicine, Faculty of Health Sciences, UiT - The Artic University of Norway, Tromsø, Norway;
| | - Giorgio Pagani
- Department of Obstetrics and Gynecology, Fondazione Poliambulanza, Brescia, Italy
| | - Alessandra Familiari
- Department of Maternal-Fetal Medicine, Catholic University of the Sacred Heart, Rome, Italy
| | - Asma Khalil
- Fetal Medicine Unit, Division of Developmental Sciences, St. George's University of London, London, United Kingdom
| | - Tally-Lerman Sagies
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Fetal Neurology Clinic and Paediatric Neurology Unit, Wolfson Medical Centre, Holon, Israel
| | - Gustavo Malinger
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; GYN Ultrasound Division, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Zvi Leibovitz
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Fetal Neurology Clinic and Institute of Medical Genetics, Wolfson Medical Center, Holon, Israel
| | - Catherine Garel
- Service de Radiologie, Hôpital d'Enfants Armand-Trousseau, Paris, France
| | - Marie Laure Moutard
- Service de Neuropédiatrie, Hôpital Trousseau, Hôpitaux Universitaires de l'Est Parisien, Université Pierre et Marie Curie, Paris, France
| | - Gianluigi Pilu
- Department of Obstetrics and Gynaecology, Sant'Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Amar Bhide
- Fetal Medicine Unit, Division of Developmental Sciences, St. George's University of London, London, United Kingdom
| | - Ganesh Acharya
- Department of Clinical Medicine, Faculty of Health Sciences, UiT - The Artic University of Norway, Tromsø, Norway
| | - Martina Leombroni
- Department of Obstetrics and Gynecology, University of Chieti-Pescara, Chieti, Italy
| | - Lamberto Manzoli
- Department of Medicine and Aging Sciences, University of Chieti-Pescara, Chieti, Italy; EMISAC, Ce.S.I. Biotech, Chieti, Italy; and
| | - Aris Papageorghiou
- Fetal Medicine Unit, Division of Developmental Sciences, St. George's University of London, London, United Kingdom
| | - Federico Prefumo
- Department of Obstetrics and Gynaecology, University of Brescia, Brescia, Italy
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The Midline Sagittal View of Fetal Brain: Moving from 3D to 2D. JOURNAL OF FETAL MEDICINE 2015. [DOI: 10.1007/s40556-015-0065-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shen O, Gelot AB, Moutard ML, Jouannic JM, Sela HY, Garel C. Abnormal shape of the cavum septi pellucidi: an indirect sign of partial agenesis of the corpus callosum. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 46:595-599. [PMID: 25586942 DOI: 10.1002/uog.14776] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/20/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To describe and assess the presence of a new indirect sign of partial agenesis of the corpus callosum (pACC): an abnormally shaped cavum septi pellucidi (CSP). METHODS We analyzed retrospectively images from all 71 cases of pACC seen at two referral centers between September 2006 and April 2014. Abnormally shaped CSP was diagnosed when its lateral dimension was greater than its anteroposterior dimension in the axial transthalamic plane, and the incidence of this sign was assessed. We also examined the following variables: gestational age at referral, indication for referral, which (if any) of the four corpus callosal segments were abnormal, presence of other, previously established, indirect signs of callosal agenesis (ACC) and presence of additional cerebral or extracerebral anomalies. RESULTS In 56 of the 71 (79%) cases, the CSP was measurable; it was abnormally shaped in 19 (34%) of these cases, 15 (79%) of which had no other indirect signs of pACC. Of 23 cases with isolated pACC and no other indirect signs, 12 (52%) had an abnormally shaped CSP. CONCLUSIONS In a significant proportion of cases of pACC detected prenatally, the shape of the CSP is abnormal. This should be considered an additional indirect sign of pACC, and is frequently the only clue to the diagnosis. When observing this sign in a screening context, pACC should be considered, and an attempt to visualize the corpus callosum directly in the midsagittal plane is suggested.
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Affiliation(s)
- O Shen
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - A B Gelot
- Département de Neuropathologie, Service d'Anatomie et Cytologie Pathologiques, Hôpital Trousseau - Hôpitaux Universitaires de l'Est Parisien (APHP), Université Pierre et Marie Curie, Paris, France
| | - M L Moutard
- Service de Neuropédiatrie, Hôpital Trousseau - Hôpitaux Universitaires de l'Est Parisien (APHP), Université Pierre et Marie Curie, Paris, France
| | - J M Jouannic
- Pôle de Périnatalité, Centre Pluridisciplinaire de Diagnostic Prénatal de l'Est Parisien, Hôpital Trousseau - Hôpitaux Universitaires de l'Est Parisien (APHP), Université Pierre et Marie Curie, Paris, France
| | - H Y Sela
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - C Garel
- Service de Radiologie, Hôpital Trousseau, Hôpitaux Universitaires de l'Est Parisien (APHP), Université Pierre et Marie Curie, Paris, France
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41
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Weisstanner C, Kasprian G, Gruber GM, Brugger PC, Prayer D. MRI of the Fetal Brain. Clin Neuroradiol 2015; 25 Suppl 2:189-96. [PMID: 26063004 DOI: 10.1007/s00062-015-0413-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 05/12/2015] [Indexed: 12/17/2022]
Abstract
The purpose of this article is to provide an overview of the possibilities for fetal magnetic resonance imaging (MRI) in the evaluation of the fetal brain. For brain pathologies, fetal MRI is usually performed when an abnormality is detected by previous prenatal ultrasound, and is, therefore, an important adjunct to ultrasound. The most commonly suspected brain pathologies referred to fetal MRI for further evaluation are ventriculomegaly, missing corpus callosum, and abnormalities of the posterior fossa. We will briefly discuss the most common indications for fetal brain MRI, as well as recent advances.
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Affiliation(s)
- C Weisstanner
- Department of Radiology, Division of Neuro- and Musculoskeletal Radiology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.,University Institute for Diagnostic and Interventional Neuroradiology, Inselspital, University of Bern, Bern, Switzerland
| | - G Kasprian
- Department of Radiology, Division of Neuro- and Musculoskeletal Radiology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - G M Gruber
- Center of Anatomy and Cell Biology, Integrative Morphology Group, Medical University of Vienna, Vienna, Austria
| | - P C Brugger
- Center of Anatomy and Cell Biology, Integrative Morphology Group, Medical University of Vienna, Vienna, Austria
| | - D Prayer
- Department of Radiology, Division of Neuro- and Musculoskeletal Radiology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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Malinger G, Lerman-Sagie T. Re: additional value of fetal magnetic resonance imaging in the prenatal diagnosis of central nervous system anomalies: a systematic review of the literature. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 45:236-237. [PMID: 25627096 DOI: 10.1002/uog.14740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 11/25/2014] [Indexed: 06/04/2023]
Affiliation(s)
- G Malinger
- Tel Aviv Medical Center, Lis Maternity Hospital - Obstetrics & Gynecology Ultrasound Division, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Craven I, Bradburn MJ, Griffiths PD. Antenatal diagnosis of agenesis of the corpus callosum. Clin Radiol 2014; 70:248-53. [PMID: 25498575 DOI: 10.1016/j.crad.2014.11.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/29/2014] [Accepted: 11/06/2014] [Indexed: 10/24/2022]
Abstract
AIM To estimate the diagnostic performance of ultrasound in detecting agenesis of the corpus callosum (ACC). MATERIALS AND METHODS A retrospective review was performed of 1722 in utero MRI examinations. All cases were identified in which the fetus had been referred from ultrasonography with a diagnosis of ACC and those in which ACC was given as a diagnosis on the in utero MRI study. The MRI was assumed to provide the correct diagnosis of ACC and descriptive statistics of diagnostic accuracy for ultrasound were calculated. RESULTS Of the 1722 ultrasound examinations performed, 121 had a diagnosis of ACC and approximately 50% were confirmed at MRI. Forty-two fetuses with ACC not suspected at ultrasonography were also identified at MRI. Ultrasonography had a positive predictive value of 47% (95% CI: 38-56%) and a negative predictive value of 97% (95% CI: 96-98%) for detecting ACC. CONCLUSION Ultrasound is poor in diagnosing ACC and in utero MRI should be performed if there is any suspicion on antenatal ultrasonography.
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Affiliation(s)
- I Craven
- Department of Neuroradiology, Leeds General Infirmary, Leeds, UK
| | - M J Bradburn
- Clinical Trials Research Unit, ScHARR, Sheffield, UK
| | - P D Griffiths
- Academic Unit of Radiology, University of Sheffield, Sheffield, UK.
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Conturso R, Contro E, Bellussi F, Youssef A, Pacella G, Martelli F, Rizzo N, Pilu G, Ghi T. Demonstration of the Pericallosal Artery at 11-13 Weeks of Gestation Using 3D Ultrasound. Fetal Diagn Ther 2014; 37:305-9. [DOI: 10.1159/000366156] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/28/2014] [Indexed: 11/19/2022]
Abstract
Objective: To assess the sonographic visualization of the pericallosal arteries in normal fetuses at 11-13 weeks of gestation using 3D ultrasound. Methods: We prospectively enrolled women with a singleton pregnancy undergoing ultrasound at 11-13 weeks of gestation. A 3D volume with high-definition power Doppler was acquired starting from the sagittal view of the fetal head and stored in the spatiotemporal image correlation mode. The images of the pericallosal arteries were assigned a score of 0 (no visualization), 1 (visualization of the origin) or 2 (visualization of the whole course). A follow-up scan was performed in all cases at 20 weeks of gestation to assess the presence of the corpus callosum. Results: 70 patients were included and the pericallosal arteries were sonographically detectable in all cases. Image scores of 1 and 2 were obtained in 8 and 62 cases, respectively. The whole length of the vessel was between 3.5 and 4.5 mm. The vast majority of those with a score of 2 were beyond 12 completed weeks of gestation. All fetuses showed a normal corpus callosum at midtrimester and no abnormal brain findings after birth. Conclusions: The pericallosal arteries are sonographically visible since the first trimester in 3D ultrasound scans of fetuses found to have a normal corpus callosum at follow-up.
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Garel C, Moutard ML. Main congenital cerebral anomalies: how prenatal imaging aids counseling. Fetal Diagn Ther 2014; 35:229-39. [PMID: 24577226 DOI: 10.1159/000358519] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 12/30/2013] [Indexed: 11/19/2022]
Abstract
The purpose of this article is to discuss some common cerebral lesions that may be detected during prenatal screening: corpus callosum dysgenesis, absent septum pellucidum, localized parenchymal ischemic-hemorrhagic lesions, megacisterna magna, Blake's pouch cyst, posterior fossa arachnoid cyst and Dandy-Walker malformation. For each cerebral defect, the main imaging findings are reminded, certain differential diagnoses are discussed and prenatal diagnostic accuracy is analyzed with emphasis on uncertainties encountered during analysis of ultrasound or magnetic resonance images. Detecting cerebral lesions in fetuses requires rapid counseling by neuropediatricians. Keeping in mind that the prenatal diagnostic accuracy is not 100%, the neuropediatricians have to answer the parents' questions regarding the outcome of the unborn child as well as the risk of recurrence for future pregnancies. This article is based on the authors' large experience in both prenatal imaging and neurocounseling. The frequently asked questions are set up. Answers are provided, underscoring the importance of an appropriate description of the cerebral defect, and therefore the pivotal role of prenatal imaging. However, prenatal neurocounseling remains challenging and the parents must be aware of uncertainties regarding both diagnostic accuracy and prognostic evaluation.
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Affiliation(s)
- Catherine Garel
- Department of Radiology, Hôpital d'Enfants Armand-Trousseau, Paris, France
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Edwards TJ, Sherr EH, Barkovich AJ, Richards LJ. Clinical, genetic and imaging findings identify new causes for corpus callosum development syndromes. ACTA ACUST UNITED AC 2014; 137:1579-613. [PMID: 24477430 DOI: 10.1093/brain/awt358] [Citation(s) in RCA: 215] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The corpus callosum is the largest fibre tract in the brain, connecting the two cerebral hemispheres, and thereby facilitating the integration of motor and sensory information from the two sides of the body as well as influencing higher cognition associated with executive function, social interaction and language. Agenesis of the corpus callosum is a common brain malformation that can occur either in isolation or in association with congenital syndromes. Understanding the causes of this condition will help improve our knowledge of the critical brain developmental mechanisms required for wiring the brain and provide potential avenues for therapies for callosal agenesis or related neurodevelopmental disorders. Improved genetic studies combined with mouse models and neuroimaging have rapidly expanded the diverse collection of copy number variations and single gene mutations associated with callosal agenesis. At the same time, advances in our understanding of the developmental mechanisms involved in corpus callosum formation have provided insights into the possible causes of these disorders. This review provides the first comprehensive classification of the clinical and genetic features of syndromes associated with callosal agenesis, and provides a genetic and developmental framework for the interpretation of future research that will guide the next advances in the field.
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Affiliation(s)
- Timothy J Edwards
- 1 Queensland Brain Institute, The University of Queensland, Brisbane, 4072, Australia2 Departments of Neurology and Pediatrics, The University of California and the Benioff Children's Hospital, CA, 94158, USA
| | - Elliott H Sherr
- 3 Departments of Pediatrics and Neurosurgery, Radiology and Biomedical Imaging, The University of California Children's Hospital, CA 94143, USA
| | - A James Barkovich
- 3 Departments of Pediatrics and Neurosurgery, Radiology and Biomedical Imaging, The University of California Children's Hospital, CA 94143, USA4 Departments of Paediatrics and Neurosurgery, Radiology and Biomedical Imaging, The University of California San Francisco and The Benioff Children's Hospital, CA 94143-0628 USA
| | - Linda J Richards
- 1 Queensland Brain Institute, The University of Queensland, Brisbane, 4072, Australia5 School of Biomedical Sciences, The University of Queensland, Brisbane, 4072, Australia
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Paladini D, Pastore G, Cavallaro A, Massaro M, Nappi C. Agenesis of the fetal corpus callosum: sonographic signs change with advancing gestational age. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 42:687-690. [PMID: 23671008 DOI: 10.1002/uog.12506] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 05/02/2013] [Accepted: 05/03/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVES To assess the presence and degree of indirect signs of agenesis of the corpus callosum (ACC) according to gestational age and determine the percentage of cases in which each sign is present by 24 gestational weeks. METHODS We analyzed retrospectively 54 cases of ACC which underwent three-dimensional neurosonography at our unit between January 2005 and December 2012. A single examination was available in 48 cases and six cases were followed up longitudinally, giving a total of 69 examinations. The following variables were assessed: indication for referral, karyotype, width of the atrium and presence/absence of colpocephaly, the cavum septi pellucidi, dorsal cyst and additional central nervous system (CNS) and non-CNS anomalies. RESULTS Overall, there were 31 cases of complete ACC (cACC, 42 examinations) and 23 cases of partial ACC (pACC, 27 examinations). The mean gestational age was lower in the cases referred because of anomalies other than ACC than it was in those referred because of ventriculomegaly and/or suspicion of ACC (P < 0.05). Atrial width showed a positive linear correlation with advancing gestational age (P < 0.0001); it was < 10.0 mm in 25/34 (73.5%) examinations < 24 gestational weeks and in 9/35 (25.7%) ≥ 24 weeks (P < 0.001). Colpocephaly was present in 20.6% (7/34) of examinations < 24 weeks and in 68.6% (24/35) of those after 23 weeks (P < 0.05). The cavum septi pellucidi was present and visible at least in part in 17 (63%) of the 27 pACC examinations. In nine of the 27 (33.3%) pACC examinations, there was neither ventriculomegaly nor absence of the cavum septi pellucidi. Associated anomalies were present in 25/54 (46.3%) cases, and in 11 these included or consisted of CNS abnormalities. Karyotype was abnormal in seven of the 40 (17.5%) cases in which it was available. CONCLUSIONS In a significant proportion of cases, most of the indirect signs of ACC are either absent or barely visible at the time of the midtrimester screening ultrasound examination. Therefore, ACC may escape diagnosis at midtrimester screening ultrasound. In particular, a third of examinations in fetuses with pACC may not show any abnormality in the transventricular screening view < 24 weeks. The medicolegal implications of such findings are important and should be considered.
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Affiliation(s)
- D Paladini
- Fetal Medicine and Surgery Unit, Giannina Gaslini Institute, Genoa, Italy
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Cagneaux M, Lacalm A, Huissoud C, Allias F, Ville D, Massardier J, Guibaud L. Agenesis of the corpus callosum with interhemispheric cyst, associated with aberrant cortical sulci and without underlying cortical dysplasia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 42:603-605. [PMID: 23801583 DOI: 10.1002/uog.12545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/15/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Affiliation(s)
- M Cagneaux
- Université Claude Bernard Lyon I, Imagerie Pédiatrique et Foetale, Hopital Femme Mère Enfant, 59, Boulevard Pinel, 69677, Lyon, Bron, France; Centre Pluridisciplinaire de Diagnostic Prénatal, Hôpital Femme Mère Enfant, 69677, Lyon, Bron, France
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Saleem SN. Fetal magnetic resonance imaging (MRI): a tool for a better understanding of normal and abnormal brain development. J Child Neurol 2013; 28:890-908. [PMID: 23644716 DOI: 10.1177/0883073813486296] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Knowledge of the anatomy of the developing fetal brain is essential to detect abnormalities and understand their pathogenesis. Capability of magnetic resonance imaging (MRI) to visualize the brain in utero and to differentiate between its various tissues makes fetal MRI a potential diagnostic and research tool for the developing brain. This article provides an approach to understand the normal and abnormal brain development through schematic interpretation of fetal brain MR images. MRI is a potential screening tool in the second trimester of pregnancies in fetuses at risk for brain anomalies and helps in describing new brain syndromes with in utero presentation. Accurate interpretation of fetal MRI can provide valuable information that helps genetic counseling, facilitates management decisions, and guides therapy. Fetal MRI can help in better understanding the pathogenesis of fetal brain malformations and can support research that could lead to disease-specific interventions.
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Affiliation(s)
- Sahar N Saleem
- Department of Radiology, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt.
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Hosseinzadeh K, Luo J, Borhani A, Hill L. Non-visualisation of cavum septi pellucidi: implication in prenatal diagnosis? Insights Imaging 2013; 4:357-67. [PMID: 23584847 PMCID: PMC3675254 DOI: 10.1007/s13244-013-0244-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 02/17/2013] [Accepted: 03/19/2013] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE This manuscript reviews congenital anomalies and imaging findings associated with non-visualisation of the cavum septi pellucidi (CSP) found on prenatal sonogram. BACKGROUND Observation of a normal cavum septi pellucidi (CSP) is an important landmark in the second and third trimester prenatal ultrasound evaluation of the fetal brain, and its visualisation provides reassurance of normal central forebrain development. Non-visualisation of the CSP is a prenatal sonographic finding, which in most cases is associated with neuroanatomical anomalies that include agenesis of the corpus callosum, schizencephaly, septo-optic dysplasia, holoprosencephaly, chronic hydrocephalus and acquired fetal brain injury. Isolated septal deficiency, a rare but controversial entity, is considered a variant of normal. Common pitfalls in the sonographic evaluation of CSP include columns of the fornix that mimic CSP, and prominent cavum vergae that can simulate non-visualisation of the CSP. When non-visualisation of the CSP is suspected, magnetic resonance imaging (MRI) of the fetal brain can confirm and evaluate associated anomalies. CONCLUSION Visualisation of the CSP is an integral component of the prenatal ultrasound and its non-visualisation is associated with other malformations, diagnosis of which is aided by MRI. TEACHING POINTS • Cavum septi pellucidi (CSP) is an important landmark in the prenatal ultrasound evaluation of the fetal brain, and is a marker for normal central forebrain development. • Non-visualisation of the CSP is most commonly associated with other neuroanatomical abnormalities. • Examination of the fetal brain by MRI can confirm the sonographic findings and evaluate for associated anomalies.
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Affiliation(s)
- K Hosseinzadeh
- Department of Radiology, Presbyterian South Tower, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite 3950, Pittsburgh, PA, 15213, USA,
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