For citations:
Fedorova A.V., Kochergina N.V., Boulytcheva I.V., Shchipakhina Y.A., Sushentsov E.A., Nered A.S., Bludov A.B. Difficulties in differential diagnosis between heterotopic ossification and mesenchymal chondrosarcoma: a case report. Bone and soft tissue sarcomas, tumors of the skin. 2017;(2):50-56. (In Russ.)