E.G. MENDELEVICH1, A.A. KURBANOVA2  1Kazan State Medical University, Kazan 2City Clinical Hospital No. 7, Kazan Contact details: Mendelevich E.G. — MD, Professor of Department of Neurology and Rehabilitation Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7-987-296-15-16, e-mail: emendel@mail.ru  The article presents a review of literature devoted to a variant of cavity formation in […]