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The isolated fourth ventricle

Ali, K., Nannapaneni, R. and Hamandi, Khalid 2013. The isolated fourth ventricle. BMJ Case Reports 2013 , pii: bcr2013008791. 10.1136/bcr-2013-008791

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Isolated enlargement of the fourth ventricle, or ‘encysted’ fourth ventricle is a rare late complication following shunt insertion of the lateral ventricles for hydrocephalus. Caudal and rostral obstruction of the fourth ventricle and its subsequent dilation results in compression of adjacent cerebellum and brain stem structures; treatment with further shunt insertion directly to the fourth ventricle is invariably successful. There is potential for diagnostic delay, when clinical symptoms and signs of cerebellar and brain stem compromise are unrecognised or attributed to other factors, and attention on the CT is focused on the lateral ventricular system and the already existing ventriculoperitoneal shunt, which will appear unchanged from previous scans. We report two cases with isolated fourth ventricular obstruction and review the literature to highlight the importance of recognising this condition.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Subjects: R Medicine > R Medicine (General)
Publisher: BMJ Publishing Group
ISSN: 1757-790X
Last Modified: 04 Jun 2017 08:19

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