膀胱多発悪性腫瘍（横紋筋肉腫と移行上皮癌）の1例

MULTIPLE PRIMARY NEOPLASM OF THE URINARY BLADDER COMPRISED RHABDOMYOSARCOMA AND TRANSITIONAL CELL CARCINOMA: A CASE REPORT

　横紋筋肉腫と移行上皮癌の合併した膀胱多発悪性腫瘍の1例を報告する。患者は69歳，男性，主訴は無症候性血尿，膀胱尿道全摘回腸導管造設術を施行した。組織学的に，横紋筋肉腫と移行上皮癌が証明された。この病態の定義，呼称につき文献的考察を加えた。

The patient was 69-year-old male, who visited our clinic with a complaint of asymptomatic macro-hematuria. Total cystourethrectomy with ileal loop urinary diversion was performed. Histological exami-nation revealed rhabdomyosarcoma (pleomorphic type) and transitional cell carcinoma (grade II) indepen-dently. To simplify the confused definition and terminology, we proposed the term multiple primary neoplasm. The terms such as carcinosarcoma or mixed tumor would obscure this pathological condition.