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Updated: Jul 5, 2026

Endoscopic Approach for Colloid Cyst Resection
Published on: May 23, 2025
Colloid cyst of the velum interpositum: a common lesion at an uncommon site
Divyata R Hingwala1, Darshana A Sanghvi, Asha S Shenoy
1Department of Radiology, King Edward Memorial Hospital and Seth G S Medical College, Mumbai 400012, India. divyatahingwala@gmail.com
Background:
Colloid cysts are typically located in the region of the anterior third ventricle in the proximity of foramen of Monro. Although 'endodermal cyst' has been identified in several regions of the brain, location of characteristic colloid cyst entirely within the confines of velum interpositum and outside the ventricles has not been reported earlier.
Case Description:
We report a unique case of colloid cyst located in the region of velum interpositum in a 33-year-old patient with headache and seizures. Such a location of the colloid cyst has not been identified earlier in the literature. The literature on pathogenesis of colloid cysts in general is briefly reviewed.
Conclusions:
Colloid cyst located in the velum interpositum is reported. Such a location gives additional information on the pathogenesis of these lesions.
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