[Cae of double cancer involving of the bladder and prostate which was treated by radical cystectomy 8 years after radical prostatectomy].

A 66-year-old man was diagnosed as having prostate cancer (T2aN0M0) and neoadjuvant hormone therapy was started from 17 February 1995. During observation, superficial bladder cancer was incidentally found and the first transurethral resection was carried out on 21 June 1995. Radical prostatectomy was performed on 8 May 1996. Thereafter, bladder cancer demonstrated repeated recurrence. At the time of the third recurrence, malignant trasformation was recognized as TCC G3 T2 or more invasive, and radical cystectomy with ileal conduit was performed on 12 May 2004 when the patient was 74 years old. From the perspective of double cancer, the frequency of diagnosing localized prostate cancer with superficial bladder cancer is expected to increase because PSA screening is being increasingly performed recently. Because of the possibility of malignant transformation in patients with superficial bladder cancer, in cases of coincident of cancers, it remains controversial which treatment should be selected for the previously diagnosed prostate cancer. Here, we report the clinical course and discuss this issue to some extent.