[Urinary bladder tumor manifesting multiple bone metastases similar to prostatic carcinoma--a case report].

A 72-year-old patient was found to have a non-papillary bladder tumor extending from the vesical floor to the retrotrigone and manifested multiple bone metastases without evidence of any hematogenic metastases in other organs. The pattern of the above metastases were very similar to that of a prostatic carcinoma and suggests that the so-called specific pattern of bone metastases observed in prostatic carcinomas might be caused by the location of the original tumor and not by features of the prostatic carcinoma cells themselves.