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Peraud A, Schuler-Ortoli M, Schaal M, Reister F, Ehrhardt H, Friebe-Hoffmann U. Staged neurosurgical approach for giant and progressive neonatal arachnoid cysts: a case series and review of the literature. Childs Nerv Syst 2024; 40:1997-2007. [PMID: 38602531 PMCID: PMC11180026 DOI: 10.1007/s00381-024-06385-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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 03/28/2024] [Indexed: 04/12/2024]
Abstract
OBJECTIVES Prenatally diagnosed complex arachnoid cysts are very rare. While the true prenatal incidence is still unknown, they account for approximately 1% of intracranial masses in newborns. They rarely exhibit rapid growth or cause obstructive hydrocephalus, but if they increase to such a dimension during pregnancy, the ideal management is not well established. We present our detailed perinatal experience, covering prenatal diagnosis, a compassionate delivery process, and neonatal stabilization. Finally, a thorough postnatal neurosurgical intervention was performed. Initially, our focus was on the gradual reduction of cyst size as a primary effort, followed by subsequent definitive surgical treatment. METHODS This case series shows the treatment course of three fetuses with antenatally diagnosed large arachnoid cysts. We present pre- and postnatal management and imaging, as well as the surgical treatment plan and the available clinical course during follow-up. RESULTS Two girls and one boy were included in the current review. All three cases presented with prenatally diagnosed complex arachnoid cysts that increased in size during pregnancy. The mean gestational age at delivery was 35 weeks (range 32 to 37 weeks), and all patients were delivered by a caesarian section. Increasing head circumference and compression of brain structures were indications for delivery, as they are associated with a high risk of excess intracranial pressures and CSF diapedesis, as well as traumatic delivery and maternal complications. All cysts were supratentorial in location; one expanded into the posterior fossa, and one was a multicompartment cyst. All children underwent an initial surgical procedure within the first days of life. To relieve cyst pressure and achieve a reduction in head circumference, an ultrasound-guided or endoscopic-assisted internal shunt with drainage of the cyst to the ventricles or subdural/subarachnoid space was inserted. Definite surgical therapy consisted of cyst marsupialization and/or cysto-peritoneal shunt implantation. All children survived without severe neurodevelopmental impairments. CONCLUSION With the cases presented, we demonstrate that the slow reduction of immense cyst size as an initial procedure until optimal requirements for final surgical treatment were achieved has proven to be optimal for neurological outcome. Special emphasis has to be taken on the delicate nature of premature newborn babies, and surgical steps have to be thoroughly considered within the interdisciplinary team.
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Affiliation(s)
- Aurelia Peraud
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University Hospital Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
| | - Marie Schuler-Ortoli
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University Hospital Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Matthias Schaal
- Department of Radiology, University Hospital Ulm, Ulm, Germany
| | - Frank Reister
- Section Obstetrics & Perinatology, Department of Obstetrics & Gynecology, University Hospital Ulm, Ulm, Germany
| | - Harald Ehrhardt
- Division of Neonatology and Pediatric Intensive Care Medicine, Department of Pediatrics and Adolescent Medicine, University Hospital Ulm, Ulm, Germany
| | - Ulrike Friebe-Hoffmann
- Section Obstetrics & Perinatology, Department of Obstetrics & Gynecology, University Hospital Ulm, Ulm, Germany
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Raafat M, Hosny SM, Sheta GA, Talaat SH, Ali EA. Role of fetal MRI to diagnose abnormal cerebral ventricular system and associated fetal brain anomalies. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2022. [DOI: 10.1186/s43055-022-00757-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Abnormal cerebral ventricular system is one of the most common clinical indications for fetal MRI, mainly to detect other associated abnormalities that can be occult on prenatal ultrasonography. Although using ultrasound can identify most anomalies, MRI is known to be superior in identifying CNS anomalies as it has higher contrast resolution for brain parenchymal assessment added to the fact of being less affected by fetal positioning, oligohydramnios, maternal obesity, and reverberation artifacts. Fetal brain ventriculomegaly is defined as atrial width of > 10 mm on sonography, measured in the axial plane, at the level of the frontal horns, cavum septi pellucidi, and glomus of the choroid plexus perpendicular to the long axis of the lateral ventricle. One of the most important factors determining the fetal neurological outcome is the presence and severity of additional CNS anomalies that are better clarified by MRI. The aim of this study is to establish the role of fetal MRI in detecting the association between abnormal cerebral ventricular system and other CNS anomalies, correlation with the severity of ventriculomegaly and ventricle asymmetry.
Results
Thirty pregnancies with fetal brain abnormal ventricular system were included in this study, 5 cases with isolated corpus callosum (CC) agenesis (16.666%); 2 cases with cystic lesions [one interhemispheric and the other dorsal] (6.666%) both associated with CC agenesis; 1 case with alobar holoprosencephaly (3.333%) associated with CC agenesis; 2 cases with semi-lobar holoprosencephaly (6.666%) [associated with CC agenesis and one of them is also associated with lissencephaly]; 3 cases with Dandy–Walker Malformation (DWM) (10%) [2 isolated and 1 associated with CC agenesis]; 3 cases with Dandy–Walker Variants (DWV) (10%) [1 isolated and 2 associated with CC agenesis]; 2 cases with Joubert syndrome (6.666%); 1 case isolated lissencephaly (3.333%); 4 cases of obstructive ventriculomegaly (13.333%) (1 of which associated with CC agenesis); 1 case of Arnold Chiari malformation type II (3.333%) associated with CC agenesis; 2 cases with meningoceles (6.666%) (occipital and parieto-occipital); 1 case with Mega cisterna Magna (3.333%); 1 case with anencephaly (3.333%); 1 case with right hemimegalencephaly (3.333%) (associated with frontal meningocele and CC agenesis); and 1 case with grade IV germinal matrix hemorrhage (3.333%). The pregnancies resulted in 20 births (66.66%), 2 died directly after birth (6.66%), 5 terminations (16.66%), and 3 intrauterine fetal deaths (IUFD) (10%). We found that the frequency of associated CNS anomalies was strongly related to the width of the ventricle. The association between CNS findings and ventricle width was particularly evident in sever ventriculomegaly. The greater the width of the ventricular system, the more the risk of associated CNS anomalies. Only one case showed diffusion restriction and was diagnosed to be of hemorrhagic nature. The relation between symmetry and degree of ventriculomegaly was found to be statistically insignificant (P = 0.115). Assessment of different fetal brain congenital anomalies was not significantly affected by the using of DWI sequence as it is a functional modality rather than being a tool for assessment of anatomical gross abnormalities.
Conclusions
Fetal MRI is an important adjuvant to US in cases of ventriculomegaly particularly those associated with complex CNS anomalies. The association between CNS findings and ventricular dilatation was particularly evident in sever ventriculomegaly. The greater the width of the ventricular system, the more the risk of associated CNS anomalies. Fetal MRI may also be helpful in doubtful cases that could be misdiagnosed as ventriculomegaly including holoprosencephaly, hydranencephaly, porencephaly, and various supratentorial cystic lesions. DWI confirms the diagnosis of hemorrhage.
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Hernandez NE, Lu VM, Altman N, Ragheb J, Niazi TN, Wang S. Incidence, follow-up, and postnatal clinical progress of children with central nervous system anomalies on fetal MRI. J Neurosurg Pediatr 2022; 30:160-168. [PMID: 35901770 DOI: 10.3171/2022.4.peds2269] [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] [Received: 02/23/2022] [Accepted: 04/22/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE MRI is increasingly employed to assess intrauterine fetal anomalies. Central nervous system (CNS) anomalies are common structural conditions that warrant evaluation with fetal MRI and subsequent prenatal consultation with a pediatric neurosurgeon. As the use of fetal MRI increases, there is greater impetus to understand the most common CNS structural anomalies diagnosed in utero, as well as their natural histories. METHODS The authors performed a single-center retrospective review of fetal MRI evaluations performed between January 2012 and December 2020. Children who underwent both prenatal and postnatal neurosurgical evaluations of CNS anomalies were included. Specific CNS anomalies on fetal MRI, associated extra-CNS findings, and suspicion for genetic abnormality or syndromes were noted. Postnatal clinical status and interventions were assessed. RESULTS Between January 2012 and December 2020, a total of 469 fetal MRI evaluations were performed; of these, 114 maternal-fetal pairs had CNS anomalies that warranted prenatal consultation and postnatal pediatric neurosurgical follow-up. This cohort included 67 male infants (59%), with a mean ± SD follow-up of 29.8 ± 25.0 months after birth. Fetal MRI was performed at 27.3 ± 5.8 weeks of gestational age. The most frequently reported CNS abnormalities were ventriculomegaly (57%), agenesis or thinning of the corpus callosum (33%), Dandy-Walker complex (DWC) (21%), neuronal migration disorders (18%), and abnormalities of the septum pellucidum (17%). Twenty-one children (18%) required neurosurgical intervention at a mean age of 2.4 ± 3.7 months. The most common surgical conditions included myelomeningocele, moderate to severe ventriculomegaly, encephalocele, and arachnoid cyst. Corpus callosum agenesis or thinning was associated with developmental delay (p = 0.02) and systemic anomalies (p = 0.05). The majority of prenatal patients referred for DWC had Dandy-Walker variants that did not require surgical intervention. CONCLUSIONS The most common conditions for prenatal neurosurgical assessment were ventriculomegaly, corpus callosum anomaly, and DWC, whereas the most common surgical conditions were myelomeningocele, hydrocephalus, and arachnoid cyst. Only 18% of prenatal neurosurgical consultations resulted in surgical intervention during infancy. The majority of referrals for prenatal mild ventriculomegaly and DWC were not associated with developmental or surgical sequelae. Patients with corpus callosum abnormalities should be concurrently referred to a neurologist for developmental assessments.
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Affiliation(s)
- Nicole E Hernandez
- 1Division of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida
| | - Victor M Lu
- 2Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida; and
| | - Nolan Altman
- 3Department of Radiology, Nicklaus Children's Hospital, Miami, Florida
| | - John Ragheb
- 1Division of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida
- 2Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida; and
| | - Toba N Niazi
- 1Division of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida
- 2Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida; and
| | - Shelly Wang
- 1Division of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida
- 2Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida; and
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Clinical variety and prognosis of intracranial arachnoid cysts in children. Neurosurg Rev 2022; 45:3171-3178. [PMID: 35657443 DOI: 10.1007/s10143-022-01809-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/26/2022] [Accepted: 05/05/2022] [Indexed: 10/18/2022]
Abstract
Arachnoid cysts (AC) occur in different intracranial locations. Management and prognosis depend on the clinical presentation and treatment guidelines do not exist. With this study, we want to demonstrate the clinical variety of arachnoid cysts in children and place a focus on outcome factors in operated cases. This retrospective study of a consecutive single unit series of children, who underwent AC surgery between January 2010 and September 2019, provides demographic, clinical, imaging data, and information about surgical treatment and outcome. Overall, 63 patients (71.4 male) underwent surgery. Mean age was 50 months (0-191). Mean follow-up was 40 months (0-121). Eighty-one percent of patients presented with symptoms/signs of raised ICP. Focal neurological deficits were present in 15.9%, headache in 11.1% of children. Galassi cysts represented the predominant type (30.2%), followed by suprasellar (14.3%), quadrigeminal (12.7%), retrocerebellar, CPA and midline (each 11.1%), and hemispheric cysts (7.9%). Endoscopic and microsurgical fenestrations were performed in 27% and 58.7%, stent or shunt insertion in 6.3%/57.9% of the cases. In 33.3% of the cases one and in 12.7%, a second reintervention became necessary. Reoperation rate was significantly higher in children < 1 year (p = 0.003). Cyst volume decreased in 85.7%. Seventy percent of the patients were symptom free, 5% suffered from headache, and 22% from developmental disorders. All focal neurological symptoms resolved. Complication rate and outcome are depending on age and cyst location. Recurrence and revision rates are significantly higher in young infants (p = 0.003). Midline cysts with CCA are associated with developmental disorders.
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Achiron R, Kassif E, Shohat M, Kivilevitch Z. Pathologic whole exome sequencing analysis in fetuses with minor sonographic abnormal findings and normal chromosomal microarray analysis: case series. J Matern Fetal Neonatal Med 2022; 35:9730-9735. [PMID: 35282760 DOI: 10.1080/14767058.2022.2051006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND No current data exists regarding the occurrence of pathological results when using Whole Exome Sequencing (WES) analysis in a subgroup of fetuses with minor abnormalities and normal Chromosomal Microarray Analysis (CMA) results. OBJECTIVE Our study aimed to report our experience with in-utero WES abnormal results, found in fetuses with minor anomalies after a normal CMA result. METHODS A retrospective study conducted in a single tertiary center, during four years, included collating data regarding fetuses with minor structural abnormalities, normal CMA results, and abnormal triple WES test results. RESULTS Eleven fetuses were included in the study. Eight were with cardiovascular and lymphatic drainage alterations. Two fetuses developed late third-trimester macrocephaly (head circumference ≥ +2 standard deviations), and one fetus had unilateral mildly short and bowed femur bone. In seven cases (63.6%) the parents opted to terminate the pregnancy as a result of the WES analysis results. CONCLUSION Our case series raises the possibility that fetuses with even minor structural alterations and normal CMA results can have genetic variants revealable only by WES analysis which can provide critical information regarding pregnancy management.
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Affiliation(s)
- Reuven Achiron
- Department of Obstetrics and Gynecology, Ultrasound unit, Tel-Hashomer, Sackler School of Medicine, Tel-Aviv University, Ramat-Gan, Israel
| | - Eran Kassif
- Department of Obstetrics and Gynecology, Ultrasound unit, Tel-Hashomer, Sackler School of Medicine, Tel-Aviv University, Ramat-Gan, Israel
| | - Mordehay Shohat
- The Genetic Institute of Maccabi Health Services, Rehovot, Israel
| | - Zvi Kivilevitch
- Department of Obstetrics and Gynecology, Ultrasound unit, Tel-Hashomer, Sackler School of Medicine, Tel-Aviv University, Ramat-Gan, Israel
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Miller E, Orman G, Huisman TAGM. Fetal MRI assessment of posterior fossa anomalies: A review. J Neuroimaging 2021; 31:620-640. [PMID: 33964092 DOI: 10.1111/jon.12871] [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] [Received: 02/04/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 11/27/2022] Open
Abstract
Prenatal ultrasound (US) is the first prenatal imaging tool for screening and evaluation of posterior fossa malformations since it is noninvasive, widely available, and safe for both mother and child. Fetal MRI is a widely used secondary technique to confirm, correct, or complement questionable US findings and plays an essential role in evaluating fetuses with suspected US findings and /or positive family history. The main sequences of fetal MRI consist of T2-weighted (T2w) ultrafast, single-shot sequences. Axial, coronal, and sagittal images are typically acquired allowing for a detailed evaluation of the posterior fossa contents. Also, various complimentary sequences, such as T1w, T2*w gradient sequences, or advanced techniques, including diffusion-weighted imaging, diffusion tensor imaging, and magnetic resonance spectroscopy, may provide additional information based on the studied malformation. Inclusion of these techniques should be done with careful risk-benefit analysis. The use of fetal MRI also aims to evaluate for associated anomalies. In addition, prenatal diagnosis of posterior fossa malformations is still a challenge but advances in knowledge in human developmental anatomy, genetic, and imaging recognition patterns have enabled us to shed some light on prognostic information that will help with the counseling of families. Finally, high-resolution late third trimester fetal MRI offers a safe alternative to early postnatal MR imaging, basically taking advantage of the uterine environment as a kind of "maternal incubator." Our goal is to discuss the spectrum of prenatal posterior fossa pathologies that can be studied by fetal MRI and their key neuroimaging features.
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Affiliation(s)
- Elka Miller
- Department of Medical Imaging, CHEO, University of Ottawa, Ottawa, Ontario, Canada
| | - Gunes Orman
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston, Texas, USA
| | - Thierry A G M Huisman
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston, Texas, USA
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Masselli G, Vaccaro Notte MR, Zacharzewska-Gondek A, Laghi F, Manganaro L, Brunelli R. Fetal MRI of CNS abnormalities. Clin Radiol 2020; 75:640.e1-640.e11. [PMID: 32349872 DOI: 10.1016/j.crad.2020.03.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 03/25/2020] [Indexed: 11/28/2022]
Abstract
Ultrasound (US) is currently the standard approach for the initial evaluation of fetal anatomy and maternal conditions during pregnancy; however, fetal magnetic resonance imaging (MRI) has now become a valuable adjunct to US in confirming/excluding suspected abnormalities and in the detection of additional abnormalities, thus changing the outcome of pregnancy and optimising perinatal management. MRI is a non-invasive diagnostic examination that does not involve ionising radiation and has no known associated negative side effects or reported delayed sequela according to the Safety Committee of the Society for MRI. The main drawback of MRI is fetal motion. The development of fast MRI sequences has significantly decreased fetal motion artefacts allowing the evaluation of the highly mobile fetus. Single-shot fast spin-echo (SSFSE) T2-weighted imaging is a standard sequence. T1-weighted sequences are primarily used to demonstrate haemorrhage, fat, and calcification. Balanced steady-state free-precession (SSFP) sequences are beneficial in demonstrating fetal structures as well as the heart and vessels. Diffusion-weighted imaging (DWI) and magnetic resonance spectroscopy (MRS) have important applications in fetal brain imaging. In this review, we illustrate a spectrum of structural abnormalities affecting the central nervous system and the spine. The aim of this article is to provide a practical approach for radiologists and clinicians to fetal MRI performance and interpretation.
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Affiliation(s)
- G Masselli
- Department of Radiology, Policlinico Umberto I, Sapienza University, Rome, Italy.
| | - M R Vaccaro Notte
- Department of Radiology, Policlinico "Paolo Giaccone", University Palermo, Italy
| | - A Zacharzewska-Gondek
- Department of General and Interventional Radiology and Neuroradiology, Wroclaw Medical University, Wroclaw, Poland
| | - F Laghi
- Department of Radiology, Policlinico Umberto I, Sapienza University, Rome, Italy
| | - L Manganaro
- Department of Radiology, Policlinico Umberto I, Sapienza University, Rome, Italy
| | - R Brunelli
- Department of Obstetrics and Gynecology, Policlinico Umberto I, Sapienza University, Rome, Italy
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Beresford C, Hall S, Smedley A, Mathad N, Waters R, Chakraborty A, Sparrow OC, Tsitouras V. Prenatal diagnosis of arachnoid cysts: a case series and systematic review. Childs Nerv Syst 2020; 36:729-741. [PMID: 31897633 DOI: 10.1007/s00381-019-04477-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/17/2019] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Primary cysts are believed to arise from the splitting of the arachnoid membrane during prenatal development and can be diagnosed in utero. Prenatal diagnosis is uncommon; therefore, the evidence base for counselling expectant mothers is limited. The purpose of this article is to present a case series and review the current literature on prenatally diagnosed arachnoid cysts. METHOD A keyword search of hospital electronic records was performed for all patients with a prenatally diagnosed arachnoid cyst at a tertiary neurosurgical centre. Case notes were reviewed for all patients diagnosed between 2005 and 2017. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to structure a systematic review of all English language articles published up to May 2018. RESULTS A total of eight eligible patients were identified from our own records and 123 from the literature. Sixty-eight per cent of patients had a normal outcome. Sixty-three per cent of patients underwent surgical intervention which was not associated with abnormal outcome. The diagnosis of syndromic/genetic diagnosis (p < 0.001) and the presence of other intra-cranial anatomical abnormalities (p = 0.05) were significant predictors of abnormal outcome. CONCLUSION The pathogenesis and prognosis of a prenatal arachnoid cyst diagnosis remain unclear. These results suggest favourable outcomes from simple cysts without associated abnormalities and expectant mothers should be counselled accordingly. A wider prospective review is required to better established evidence-based practice.
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Affiliation(s)
- Charles Beresford
- Faculty of Medicine, University of Southampton, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Samuel Hall
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK.
| | - Alexander Smedley
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Nijaguna Mathad
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Ryan Waters
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Aabir Chakraborty
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Owen C Sparrow
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
| | - Vassilios Tsitouras
- Department of Neurosurgery, Wessex Neurological Centre, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK
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