title: Primary renal angiosarcoma.
abstract: Primary renal Angiosarcoma is a rare neoplasm and only 24 cases have been reported in specialized literature. We describe a case of primary renal angiosarcoma in a patient presenting with hematuria, palpable abdominal mass, left flank pain and anemia. A computerized tomography of the abdomen with contrast medium showed a tumor with 15 cm diameter, in the upper pole of the left kidney, with a low-density central area, suggesting necrosis or hemorrhage. Diagnosis was given in a morphologic base and proven by an immunohistochemical study. Primary renal angiosarcoma should be included among differential diagnosis of retroperitoneal hematoma and hemorrhagic renal tumors.
authors.affiliation: Section of Urology and Pathology, Triangulo Mineiro School of Medicine, Uberaba, Minas Gerais, Brazil. osmaruro@mednet.com.br
authors.forename: Osmar E
authors.initials: OE
authors.lastname: Souza
authors.forename: Renata M
authors.initials: RM
authors.lastname: Etchebehere
authors.forename: Marcus A
authors.initials: MA
authors.lastname: Lima
authors.forename: Paulo R
authors.initials: PR
authors.lastname: Monti
mesh_terms: D000368:Aged; D017809:Fatal Outcome; D006394:Hemangiosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed