Osteosarcoma extraesquelético. Caso clínico Extraskeletal osteosarcoma. A case report

Summary. Extraskeletal osteosarcoma is a rare malignant soft-tissue neoplasm. The clinical feature, imaging studies findings and histologic patterns allow the diferential diagnosis with other entities. We report a case of a 64 years old man who had this tumour in his thigh. We make a review of literature.