For citations:
Kochergina N.V., Boulytcheva I.V., Prokhorov S.N., Bludov A.B., Fеdorova A.V., Spirina O.G., Shсhipakhina Ya.A. Poorly Differentiated Chordoma: Case Review. Journal of oncology: diagnostic radiology and radiotherapy. 2020;3(4):86-93. (In Russ.) https://doi.org/10.37174/2587-7593-2020-3-4-86-93