Presentation
Headaches.
Patient Data
Age: 65 years
Gender: Male
From the case:
Colloid cyst (large)
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Hyperdense lesion in the roof of the anterior third ventricle with associated hydrocephalus is consistent with a colloid cyst.
From the case:
Colloid cyst (large)
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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 edema.
Case Discussion
The patient went on to have surgery.
Histology
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 tumor.
FINAL DIAGNOSIS: Colloid cyst of the third ventricle.
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