title: Primary osteosarcoma of the kidney.
abstract: Osteosarcoma arising in the kidney is a bona fide entity. A case is reported and described in clinical and pathological detail. Characteristic changes include a palpable stony hard renal mass associated with radiographic demonstration of sunburst calcification in the kidney. The case presented is unique in that virtually the entire specimen was composed of bone.
mesh_terms: D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000473:pathology; D009999:Ossification, Heterotopic; D012516:Osteosarcoma / Q000473:pathology*