Sarcomatoid renal cell carcinoma: 3 case reports

49歳男, 41歳男, 及び41歳男の計3例で肉腫様腎細胞癌を経験したが, 全例入院時, 側腹部痛, 胸部痛, 全身倦怠感の様な症状があり, 腎摘除術が行われた.2例は術後1年以内に転移により死亡したが, 1例は術後7ヵ月の現在転移・再発なしに生存している
We report 3 cases of sarcomatoid renal cell carcinoma, which is an uncommon neoplasm consisting of a typical renal cell carcinoma associated intimately with a sarcomatoid component. All patients were symptomatic at hospitalization and underwent nephrectomy. Two patients died of metastatic renal cancer within a year, and another is alive without evidence of metastasis for 12 months after the surgery. Because sarcomatoid renal cell carcinoma has a highly malignant behavior and poor prognosis, an adjuvant treatment effective in controlling the disease is awaited.