Colloid cyst (large)

Case contributed by A.Prof Frank Gaillard



Patient Data

Age: 65 years
Gender: Male

Hyperdense lesion in the roof of the anterior third ventricle with associated hydrocephalus is consistent with a colloid cyst


Within the third ventricle is a lesion with heterogeneous T2 and high T1 signal consistent with a colloid cyst. It is associated with hydrocephalus and transependymal oedema


Case Discussion

The patient went on to have surgery.


MICROSCOPIC DESCRIPTION: The specimen consists predominantly of contents of a colloid cyst. Small segments of cyst wall and lining are included. The lining consists of a layer of ciliated cuboidal epithelial cells. The wall consists of lamellated collagen. There is no evidence of tumour.

FINAL DIAGNOSIS: Colloid cyst of the third ventricle.

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Case information

rID: 34415
Case created: 19th Feb 2015
Last edited: 23rd Sep 2017
Inclusion in quiz mode: Included

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