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Guilbaud L, Carreras E, Garel C, Maiz N, Dhombres F, Deprest J, Jouannic JM. Proposal for standardized prenatal assessment of fetal open dysraphisms by the European reference network for Intellectual disability, TeleHealth, Autism and Congenital Anomalies (ITHACA) and eUROGEN. Prenat Diagn 2024; 44:1073-1087. [PMID: 38898590 DOI: 10.1002/pd.6618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 05/14/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024]
Abstract
Open dysraphisms, that is, myelomeningocele and myeloschisis, are rare diseases associated with a risk of severe disability, including lower limb motor and sensory deficiency, sphincter deficiency, and potential intellectual deficiency. Open dysraphism is diagnosed in Europe in 93.5% of cases. In case of suspicion of fetal open dysraphism, a detailed fetal morphologic assessment is required to confirm the diagnosis and exclude associated structural anomalies, as well as genetic assessment. In case of isolated fetal open dysraphism, assessment of prognosis is based on fetal imaging including the level of the lesion, the presence or not of a sac, the presence and nature of intra cranial anomalies, and the anatomical and functional evaluation of the lower extremities. Based on these biomarkers, a personalized prognosis as well as comprehensive information about prenatal management alternatives will allow parents to decide on further management options. Standardization of prenatal assessment is essential to compare outcomes with benchmark data and make assessment of surgical innovation possible. Herein, we propose a protocol for the standardized ultrasound assessment of fetuses with isolated open dysraphism.
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Affiliation(s)
- Lucie Guilbaud
- Fetal Medicine Department, Armand Trousseau University Hospital, Spin@ Reference Center, Sorbonne University, Paris, France
| | - Elena Carreras
- Maternal-Fetal Medicine Unit, Department of Obstetrics, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Catherine Garel
- Pediatric Radiology Department, Armand Trousseau University Hospital, Sorbonne University, Paris, France
| | - Nerea Maiz
- Maternal-Fetal Medicine Unit, Department of Obstetrics, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ferdinand Dhombres
- Fetal Medicine Department, Armand Trousseau University Hospital, Spin@ Reference Center, Sorbonne University, Paris, France
| | - Jan Deprest
- Clinical Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
- Institute of Women's Health, University College London, London, UK
| | - Jean-Marie Jouannic
- Fetal Medicine Department, Armand Trousseau University Hospital, Spin@ Reference Center, Sorbonne University, Paris, France
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Shi H, Prayer F, Kienast P, Khalaveh F, Nasel C, Binder J, Watzenboeck ML, Weber M, Prayer D, Kasprian G. Multiparametric prenatal imaging characterization of fetal brain edema in Chiari II malformation might help to select candidates for fetal surgery. Eur Radiol 2024:10.1007/s00330-024-10729-0. [PMID: 38656710 DOI: 10.1007/s00330-024-10729-0] [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: 11/03/2023] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVE To identify brain edema in fetuses with Chiari II malformation using a multiparametric approach including structural T2-weighted, diffusion tensor imaging (DTI) metrics, and MRI-based radiomics. METHODS A single-center retrospective review of MRI scans obtained in fetuses with Chiari II was performed. Brain edema cases were radiologically identified using the following MR criteria: brain parenchymal T2 prolongation, blurring of lamination, and effacement of external CSF spaces. Fractional anisotropy (FA) values were calculated from regions of interest (ROI), including hemispheric parenchyma, internal capsule, and corticospinal tract, and compared group-wise. After 1:1 age matching and manual single-slice 2D segmentation of the fetal brain parenchyma using ITK-Snap, radiomics features were extracted using pyradiomics. Areas under the curve (AUCs) of the features regarding discriminating subgroups were calculated. RESULTS Ninety-one fetuses with Chiari II underwent a total of 101 MRI scans at a median gestational age of 24.4 weeks and were included. Fifty scans were visually classified as Chiari II with brain edema group and showed significantly reduced external CSF spaces compared to the nonedema group (9.8 vs. 18.3 mm, p < 0.001). FA values of all used ROIs were elevated in the edema group (p < 0.001 for all ROIs). The 10 most important radiomics features showed an AUC of 0.81 (95%CI: 0.71, 0.91) for discriminating between Chiari II fetuses with and without edema. CONCLUSIONS Brain edema in fetuses with Chiari II is common and radiologically detectable on T2-weighted fetal MRI sequences, and DTI-based FA values and radiomics features provide further evidence of microstructure differences between subgroups with and without edema. CLINICAL RELEVANCE STATEMENT A more severe phenotype of fetuses with Chiari II malformation is characterized by prenatal brain edema and more postnatal clinical morbidity and disability. Fetal brain edema is a promising prenatal MR imaging biomarker candidate for optimizing the risk-benefit evaluation of selection for fetal surgery. KEY POINTS Brain edema of fetuses prenatally diagnosed with Chiari II malformation is a common, so far unknown, association. DTI metrics and radiomics confirm microstructural differences between the brains of Chiari II fetuses with and without edema. Fetal brain edema may explain worse motor outcomes in this Chiari II subgroup, who may substantially benefit from fetal surgery.
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Affiliation(s)
- Hui Shi
- Department of Radiology, Zhujiang Hospital, Southern Medical University, No. 253, Industrial Road, Guangzhou, China
| | - Florian Prayer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Patric Kienast
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Farjad Khalaveh
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Christian Nasel
- Department of Radiology (Diagnostic and Interventional) (C.N.), University Hospital Tulln - Karl Landsteiner Private University of Health Sciences, Alter Ziegelweg 10, 3430, Tulln, Austria
| | - Julia Binder
- Department of Obstetrics and Feto-maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Martin L Watzenboeck
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Michael Weber
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Daniela Prayer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Gregor Kasprian
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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Bedei I, Krispin E, Sanz Cortes M, Lombaard H, Zemet R, Whitehead WE, Belfort MA, Huisman TAGM. Prenatal diagnosis and postnatal outcome of closed spinal dysraphism. Prenat Diagn 2024; 44:499-510. [PMID: 38013494 DOI: 10.1002/pd.6454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/01/2023] [Accepted: 10/15/2023] [Indexed: 11/29/2023]
Abstract
OBJECTIVE To evaluate the prenatal diagnosis of closed dysraphism (CD) and its correlation with postnatal findings and neonatal adverse outcomes. METHODS A retrospective cohort study including pregnancies diagsnosed with fetal CD by prenatal ultrasound (US) and magnetic resonance imaging (MRI) at a single tertiary center between September 2011 and July 2021. RESULTS CD was diagnosed prenatally and confirmed postnatally in 12 fetuses. The mean gestational age of prenatal imaging was 24.2 weeks, in 17% the head circumference was ≤fifth percentile and in 25% the cerebellar diameter was ≤fifth percentile. US findings included banana sign in 17%, and lemon sign in 33%. On MRI, posterior fossa anomalies were seen in 33% of cases, with hindbrain herniation below the foramen magnum in two cases. Mean clivus-supraocciput angle (CSA) was 74°. Additional anomalies outside the CNS were observed in 50%. Abnormal foot position was demonstrated prenatally in 17%. Neurogenic bladder was present in 90% of patients after birth. CONCLUSION Arnold Chiari II malformation and impaired motor function can be present on prenatal imaging of fetuses with CD and may be associated with a specific type of CD. Prenatal distinction of CD can be challenging. Associated extra CNS anomalies are frequent and the rate of neurogenic urinary tract dysfunction is high.
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Affiliation(s)
- Ivonne Bedei
- Department of Prenatal Diagnosis and Fetal Therapy, Justus-Liebig University, Giessen, Germany
- Baylor College of Medicine Department of Obstetrics and Gynecology, Division of Fetal Therapy and Surgery and Texas Children's Hospital Fetal Center, Houston, Texas, USA
- Edward B. Singleton Department of Radiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas, USA
| | - Eyal Krispin
- Boston Children's Hospital, Brigham and Women's Hospital, Beth Israel Deacones Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Magdalena Sanz Cortes
- Baylor College of Medicine Department of Obstetrics and Gynecology, Division of Fetal Therapy and Surgery and Texas Children's Hospital Fetal Center, Houston, Texas, USA
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Hospital Pavilion for Women, Houston, Texas, USA
| | - Hennie Lombaard
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Hospital Pavilion for Women, Houston, Texas, USA
| | - Roni Zemet
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - William E Whitehead
- Department of Neurosurgery, Texas Children's Hospital & Baylor College of Medicine, Houston, Texas, USA
| | - Michael A Belfort
- Baylor College of Medicine Department of Obstetrics and Gynecology, Division of Fetal Therapy and Surgery and Texas Children's Hospital Fetal Center, Houston, Texas, USA
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Hospital Pavilion for Women, Houston, Texas, USA
| | - Thierry A G M Huisman
- Edward B. Singleton Department of Radiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas, USA
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Garel J, Rossi A, Blondiaux E, Cassart M, Hoffmann C, Garel C. Prenatal imaging of the normal and abnormal spinal cord: recommendations from the Fetal Task Force of the European Society of Paediatric Radiology (ESPR) and the European Society of Neuroradiology (ESNR) Pediatric Neuroradiology Committee. Pediatr Radiol 2024; 54:548-561. [PMID: 37803194 DOI: 10.1007/s00247-023-05766-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 10/08/2023]
Abstract
Spinal dysraphisms are amenable to diagnosis in utero. The prognosis and the neonatal management of these conditions differ significantly depending on their types, mainly on the distinction between open and closed defects. A detailed evaluation not only of the fetal spine, but also of the brain, skull, and lower limbs is essential in allowing for the right diagnosis. In this article, recommendations from the Fetal Task Force of the European Society of Paediatric Radiology (ESPR) and the European Society of Neuroradiology (ESNR) Pediatric Neuroradiology Committee will be presented. The aim of this paper is to review the imaging features of the normal and abnormal fetal spinal cord, to clarify the prenatal classification of congenital spinal cord anomalies and to provide guidance in their reporting.
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Affiliation(s)
- Juliette Garel
- Department of Radiology, Sainte-Justine University Hospital, University of Montreal, Montreal, QC, H3T 1C5, Canada.
| | - Andrea Rossi
- Neuroradiology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Eléonore Blondiaux
- Department of Radiology, Médecine Sorbonne Université, APHP, DMU DIAMENT, GRC Images, Paris, France
| | - Marie Cassart
- Department of Radiology and Fetal Medicine, Iris South Hospitals, 63 Rue J. Paquot, 1050, Brussels, Belgium
| | - Chen Hoffmann
- Department of Radiology, Tel Hashomer Hospital, Chaim Sheba Medical Center, Ramat-Gan, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Catherine Garel
- Department of Radiology, Hôpital d'Enfants Armand-Trousseau, AP-HP, Paris, France
- National Reference Center for Rare Disease: Vertebral and Spinal Cord Anomalies (MAVEM Center), AP-HP, Trousseau Hospital, Paris, France
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Gine C, Maiz N, Arévalo S, Rodó C, López M, Carreras E. Ruptured saccular limited dorsal myeloschisis: good indication for fetal repair. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2024; 63:113-115. [PMID: 37606294 DOI: 10.1002/uog.27457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/27/2023] [Accepted: 08/04/2023] [Indexed: 08/23/2023]
Affiliation(s)
- C Gine
- Pediatric Surgery Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - N Maiz
- Maternal-Fetal Medicine Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - S Arévalo
- Maternal-Fetal Medicine Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - C Rodó
- Maternal-Fetal Medicine Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - M López
- Pediatric Surgery Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - E Carreras
- Maternal-Fetal Medicine Department, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
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Arbelo-Pérez P, de Ganzo-Suárez T, de Luis-Escudero JF. Prenatal Diagnosis of Diastematomyelia: a Case Report and Literature Review. Reprod Sci 2023; 30:3563-3567. [PMID: 37491555 DOI: 10.1007/s43032-023-01307-8] [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: 04/29/2023] [Accepted: 07/10/2023] [Indexed: 07/27/2023]
Abstract
Diastematomyelia is a type of closed spinal dysraphism in which there is splitting of the spinal cord. It is a rare entity that accounts for less than 3% of closed spinal dysraphisms and affects females 1.3 to 6 times more frequently than males. Lesions are usually found in the lower thoracic and upper lumbar regions. It is characterised by two hemicords separated by a bony or cartilaginous spur. In most cases, it is an isolated malformation with a favourable prognosis. However, it may be associated with other abnormalities and sonography is the imaging test par excellence for early prenatal diagnosis. We report a case of diastematomyelia diagnosed by prenatal sonography at 24 weeks' gestation. Amniotic fluid alpha-fetoprotein (AF-AFP) was normal, while amniotic fluid acetylcholinesterase (AF-AChE) was positive. After birth, the diagnosis was confirmed with magnetic resonance imaging (MRI). The anomaly was associated with a spinal lipoma, tethered cord and dermal sinus. A review of all the cases described in the literature to date is carried out.
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Affiliation(s)
- Paula Arbelo-Pérez
- Department of Gynecology and Obstetrics, Hospital Universitario Nuestra Señora de Candelaria, Carretera General del Rosario, 145, 38010, Santa Cruz de Tenerife, Spain.
| | - Tania de Ganzo-Suárez
- Department of Gynecology and Obstetrics, Hospital Universitario Nuestra Señora de Candelaria, Carretera General del Rosario, 145, 38010, Santa Cruz de Tenerife, Spain
| | - José Fernando de Luis-Escudero
- Department of Gynecology and Obstetrics, Hospital Universitario Nuestra Señora de Candelaria, Carretera General del Rosario, 145, 38010, Santa Cruz de Tenerife, Spain
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