enlarging head size since birth, antenatally detected hydrocephalus
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There is gross triventricular osbtructive hydrocephalus seen with shunt in situ,the 4th ventricle is normal.
A saggital thin section 3d SPGR sequence reveals a web at aqueduct causing obstruction.
An aqueductal web is a membrane composed of fibrillary neuroglia. It is important to recognize this entity seperately from aqueductal stenosis as it is surgically curable.
- Parekh ND, Prabhu SP. Aqueductal web causing obstructive hydrocephalus demonstrated on sagittal FIESTA sequence. Pediatr Radiol. 2010 Dec;40 Suppl1:S154. Epub 2010 Jun 4. PubMed PMID: 20523980