I.S. RAGINOV1, 2, A.A. KHASANOV1, 3  1Republic Clinical Hospital, Kazan 2Kazan (Volga) Federal University, Kazan 3Kazan State Medical University, Kazan  Contact details: Raginov I.S. — MD, Chief Researcher Address: 138 Orenburgskiy trakt, Kazan, Russian Federation, 420064, tel.: +7 (843) 237-32-61, e-mail: raginovi@mail.ru  The article presents a clinical case of a rare disease – ectopic decidua […]