Multiple Intracranial Cavernous Angiomas With a Trigonal Cavernous Angioma Mimicking Glioma.

Intracranial cavernous angiomas (CAs) are hamartomatous vascular malformations consisting of thin-walled vascular channels located within the brain, but typically lacking intervening neural parenchyma, large feeding arteries, or draining veins. The CAs occurring in the ventricular system are rare, with an incidence of 2.5% to 10.3% of the intracranial CAs, and those arising from the trigone of the lateral ventricle are even rarer. Till now, there are <20 patients with trigonal CAs have been reported in the English literature. In this study, the authors describe an extremely rare case of multiple intracranial CAs with a trigonal CA mimicking glioma. Furthermore, they also discuss the characteristic aspects of symptoms, radiologic findings, diagnosis, and treatment of this benign lesion.