Distortion of the anterior part of the interhemispheric fissure: significance and implications for prenatal diagnosis

Vinurel, N.; Nieuwenhuyse, Anneleen Van; Cagneaux, M.; Garel, Catherine; Quarello, E.; Brasseur, Mathilde; Picone, Olivier; Ferry, M.; Gaucherand, P.; Portes, Vincent Des; Guibaud, Laurent

doi:10.1002/uog.12498

Cited by 18 publications

(18 citation statements)

References 9 publications

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“…Finally, the presence of an interhemispheric fissure (IHF) has been shown to be another clue indicating midline anomalies, and is an anatomical feature of the neurosonogram 1 . If incomplete cleavage of the IHF is a common feature of mild forms of holoprosencephalies, distortion of the IHF, associated with impaction of the medial borders of the frontal lobes, may also be an important anatomical feature in the investigation of midline pathologies, but more significantly, it may indicate supratentorial central nervous system disorganization, as well as potential cytogenetic anomalies 9 .…”

Section: From Cavum Septi Pellucidi To Anterior Complex: How To Impromentioning

confidence: 99%

From cavum septi pellucidi to anterior complex: how to improve detection of midline cerebral abnormalities

Cagneaux

Guibaud

2013

Ultrasound in Obstet & Gyne

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Section: From Cavum Septi Pellucidi To Anterior Complex: How To Impromentioning

confidence: 99%

From cavum septi pellucidi to anterior complex: how to improve detection of midline cerebral abnormalities

Cagneaux

Guibaud

2013

Ultrasound in Obstet & Gyne

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“…In screening for fetal brain anomalies, several authors have emphasized recently the usefulness of standardizing the measurement of ventricular size, carrying out routine examination in the axial planes of specific structures, such as the Sylvian fissure, the interhemispheric fissure (IHF) and the cavum septi pellucidi (CSP), or using a combination of both techniques. The option of incorporating direct views to help visualize relevant anatomical structures, such as the corpus callosum and the cerebellar vermis, has also been discussed.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most recent proposals has been to consider the anterior complex as a group of anatomical structures visible in the routine transventricular (TV) imaging plane that is useful for improving the detection of midline cerebral anomalies. The structures included in this complex suggest that the range of potential suspected lesions is broader than those related to the midline alone. In fact, we believe that it is important to visualize not only the anterior anatomical complex of the midline but also structures located posteriorly in the midline, in particular the splenium of the corpus callosum, the medial wall of the lateral ventricles, the callosal sulcus and the parieto‐occipital fissure; we refer to this group of structures as the ‘posterior complex’.…”

Section: Introductionmentioning

confidence: 99%

Anterior and posterior complexes: a step towards improving neurosonographic screening of midline and cortical anomalies

Viñals

Correa

Gonçalves-Pereira

2015

Ultrasound in Obstet & Gyne

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“…The formation of an extracortical agyric neuroglial layer occurs. It seems that the primary cause is the deficit of glycosylation of dystroglycans, resulting in neuroglial overmigration [44][45][46][47][48][49][50].…”

Section: Cortical Formation Abnormalitiesmentioning

confidence: 99%

“…This is caused by an abnormal phenomenon of migration during fetal development. The most frequent type is periventricular heterotopia, given by an abnormal development of the neuroependyma [44,50]. It consists of groups of disorganized neurons and glial cells that are located along the walls of the lateral ventricles.…”

Section: Cortical Formation Abnormalitiesmentioning

confidence: 99%

Fetal Central Nervous System Abnormalities

Ceausescu¹,

Docea²,

Dinu³

et al. 2018

Congenital Anomalies - From the Embryo to the Neonate

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Central nervous system (CNS) is one of the most frequent sites for prenatal diagnosed congenital abnormalities (10 per 1000 live births, much higher than the heart-eight per 1000, kidneys-four per 1000, and other fetal systems). Due to the evolving pattern, ultrasound screening for fetal brain malformations is usually performed at 19-22 weeks' gestation, but severe congenital anomalies can be diagnosed much earlier. This chapter is a short review, structured in eight subchapters: the first one is dedicated to the normal ultrasound aspect of different CNS segments, and the following ones are to detect pathology in prenatal life. We used many ultrasound images and tried to correlate the prenatal findings with the ones obtained postpartum/postabortum for each case, by means of pathology/imaging techniques.anomalies of the central nervous system develop early, and nowadays, we have the tools to detect some conditions at 11-13 weeks [3][4][5][6][7][8] or even earlier. The first-trimester detection of CNS anomalies is probably the most important advance in modern sonoembriology. Later in pregnancy, neurosonography is a powerful tool in diagnosing CNS pathology.The following chapter is structured as follows: 1. Normal findings 2. Ventricular system (ventriculomegaly, aqueduct stenosis) 3. Neural tube defects (NTDs) (anencephaly, encephalocele, myelomeningocele) 4. Cortical formation abnormalities (schizencephaly, lissencephaly, heterotopia, microcephaly) 5. Midline abnormalities (holoprosencephaly, complete/partial agenesis of corpus callosum or abnormal corpus callosum, absent cavum septum) 6. Posterior fossa abnormalities (mega cisterna magna, Blake's pouch cyst, Dandy-Walker or variant cerebellar, vermian hypoplasia) 7. Vascular abnormalities (hemorrhage, hematoma, dural fistula, aneurysms) 8. Destructive lesions (hydranencephaly, tumors/mass lesions, cysts, periventricular leukomalacia, infections, dysplasias, other lesions). Normal findingsSome intracranial segments of CNS are seen on ultrasound extremely early in development, especially when using high-resolution probes and modern electronic tools. Although many features are indeed recognizable, the clinical utility of such studies is yet to be proven (Figures 1-3).In the late first trimester, current guidelines recommend checking for present cranial bones, for normal midline falx, and for the presence of choroid plexus and filled ventricles [9]. The most recommended planes for assessing the head anatomy are the axial ones. In terms of spine assessment, the guidelines state that "longitudinal and axial views should be obtained to show normal vertebral alignment and integrity, and an attempt should be made to show intact overlying skin" [9] (Figure 4).From the early second trimester onwards, the commendation is to obtain in standard assessment three standard axial planes (transventricular, transthalamic, and transcerebellar), and, if technically feasible, the fetal profile [10] (Figures 5 and 6).The measurements for fetal head biometry (the biparietal diameter-BPD ...

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Distortion of the anterior part of the interhemispheric fissure: significance and implications for prenatal diagnosis

Cited by 18 publications

References 9 publications

From cavum septi pellucidi to anterior complex: how to improve detection of midline cerebral abnormalities

From cavum septi pellucidi to anterior complex: how to improve detection of midline cerebral abnormalities

Anterior and posterior complexes: a step towards improving neurosonographic screening of midline and cortical anomalies

Fetal Central Nervous System Abnormalities

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