title: Sigmoid colon metastasis from sarcomatoid renal cell carcinoma.
abstract: The sarcomatoid histological type of renal cell carcinoma is a clinically aggressive variant of parenchymal tumor, typically resistant to systemic treatment. We report the case of a 65-year-old female patient who had undergone a left radical nephrectomy for a sarcomatoid renal cell carcinoma together with enucleation of a mass of the right kidney and a contralateral nodule diagnosed as clear cell carcinoma. One year later lung, adrenal and sigmoid colon metastases from sarcomatoid renal cell carcinoma were detected and the patient was started on systemic immunotherapy with interleukin-2 and interferon-alpha. Computed tomography showed marked disease progression and the patient died 3 weeks later. Sigmoid colon metastasis from a primary sarcomatoid renal cell carcinoma has never been described in the literature.
authors.affiliation: Department of Medical Oncology, IRCCS San Matteo University Hospital, Pavia, Italy.
authors.forename: Roberta
authors.initials: R
authors.lastname: Invernizzi
authors.forename: Katia
authors.initials: K
authors.lastname: Bencardino
authors.forename: Camillo
authors.initials: C
authors.lastname: Porta
authors.forename: Alessandro
authors.initials: A
authors.lastname: Vercelli
authors.forename: Alessandra
authors.initials: A
authors.lastname: Viglio
authors.forename: Mariangela
authors.initials: M
authors.lastname: Manzoni
authors.forename: Paola
authors.initials: P
authors.lastname: Sagrada
authors.forename: Marco
authors.initials: M
authors.lastname: Danova
mesh_terms: D000368:Aged; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging / Q000556:secondary*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D012811:Sigmoid Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D014057:Tomography, X-Ray Computed