Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5997110.17816/kazmj59971Research ArticleCervico-isthmus pregnancySuprutskayaG. G.info@eco-vector.comZelenodolsk maternity hospital1401196546164650302202103022021Copyright © 1965, Suprutskaya G.G.1965<p>Cervical pregnancy is rare and belongs to one of the most severe forms of obstetric pathology.</p>Kazan Medical archiveКазанский медицинский архив