The article analyses the clinical data in 56 patients with hippocampal arteriovenous malformations who underwent complex clinical examination in the course of the disease by means of neurological, neuropsychological, and electrophysiological methods. Cerebral angiography and computerized tomography were the main methods of topical diagnosis. Thirty-nine patients were subjected to total removal of the malformations. The authors substantiate the indications for surgical treatment. Adequate surgical approaches and the methods of removal of the malformations are described.