Intracranial dermoid cyst mimicking hemorrhage. Case report and review of the literature.

Intracranial dermoid cysts are rare congenital lesions that result from abnormal sequestration of ectodermal cells during neural tube formation. Dermoid cysts are typically hypodense on computed tomography, but when hyperdense may mimic a hemorrhage. The authors report the case of a 16-year-old boy who presented with a history of chronic progressive headaches.

Moyamoya disease in a Hispanic child: a case report.

Background: Moyamoya disease was initially described by Suzuki and Takaku in 1963 as a radiographic phenomenon relating to the tiny collateral vessels characteristic of the disease that resemble a cloud or puff of smoke. The disease is rare and initially it was believed that the disease was confined to the Japanese population. It consists of occlusive vascular disease at the Circle of Willis with a tendency toward multiple ischemic neurological events and small strokes.