乳腺転移をきたした膀胱癌

Mammary gland metastasis of bladder cancer：a case report.

症例は67歳，女性。主訴は肉眼的血尿。膀胱鏡検査およびCT，MRIで浸潤性膀胱癌cT4a N3M1cと診断。ゲムシタビンとカルボプラチンによる全身化学療法を施行。化療中，左乳房に腫脹が出現し，腫瘤生検で膀胱癌乳腺転移と診断。ゲムシタビンとパクリタキセルによる全身化学療法を施行するも，初診から17か月後，乳腺転移出現から5か月後に癌死した。

　A 67-year-old woman presented to our hospital complaining of asymptomatic gross hematuria. Cystoscopy, computed tomography and magnetic resonance imaging revealed the muscle invasive bladder cancer with a clinical stage of cT4a N3M1c. She received a systemic chemotherapy consisted of gemcitabine and carboplatin. During the course, a swelling tumorous lesion had appeared in her left breast. The pathological diagnosis of this lesion was metastasis to the mammary gland of the bladder cancer. She received another systemic chemotherapy consisted of gemcitabine and paclitaxel, but she died for cancer 17 months after her first visit to our hospital, i. e., five months after the appearance of the mammary gland metastasis.