Giant cystic intraventricular cerebral cavernous malformation: MRI with pathologic correlation. A case report.

The purpose of this case report is to increase awareness of the spectrum of cerebral cavernous malformations (CCMs). We report the MRI findings and histological features of an uncommon case of a single giant (maximum diameter: >6 cm) cystic CCM of the left lateral ventricle occurring in a 26-year-old man who had undergone 30 Gy cranial irradiation for acute leukemia at the age of six years. Large cystic CCMs must be included in the neuroradiological differential diagnosis of intraventricular hemorrhagic cystic lesions.