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Combined congenital vascular anomalies and neuroepithelial (colloid) cysts

Departments of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok. Thailand; and the Vanderbilt University School of Medicine, Nashville, Tennessee.

We present two unique cases of intracranial congenital lesions of different origins. A 29-year-old woman had an angioma of the choroid plexus of the third ventricle and paraventricular region; a small neuroepithellal cyst was also included in the lesion. This case is the first known description of a choroidal angioma in the third ventricle. The other patient, a 39-year-old woman, had a ruptured saccular aneurysm at the junction of the anterior communicating and left anterior cerebral arteries, a cerebellar hemangioma, and a small neuroepithelial cyst with numerous papillary infoldings in the pineal region. The presence of choroid plexus in this cyst is further evidence of a developmental malformation. Review of the literature disclosed that vascular malformations and neuroepithelial cysts are occasionally associated with other congenital anomalies. The findings support the congenitally derived nature of these lesions.

Dr. Netsky's address is Department of Pathology. Vanderbilt University School of Medicine, Nashville, TN 37232.

Accepted for publication June 6, 1977.