Angiographically occult angiomas: a report of thirteen cases with analysis of the cases documented in the literature.

Thirteen cases of angiographically occult angioma (AOA) are reported. Nine of these presented with intraparenchymatous hemorrhage, and the other 4 patients had epilepsy. The pathological diagnosis was arteriovenous malformation in 12 cases and cavernous angioma in 1. All surgical specimens but 2 contained hemosiderin pigment. In addition to these 13 cases… CONTINUE READING