title: [Fibrosarcoma. A tumor with a long evolution time. Report of 3 cases].
mesh_terms: D000368:Aged; D005266:Femoral Neoplasms; D005354:Fibrosarcoma; D006801:Humans; D008297:Male; D008441:Maxillary Neoplasms; D008875:Middle Aged; D009362:Neoplasm Metastasis; D013848:Thigh; D013997:Time Factors
vernacular_title: Fibrosarcoma. Un tumor de largo tiempo de evolución. Presentación de tres casos.