Metastatic Colon Cancer to the Urinary Bladder: A Case Report
摘要
It is known that carcinomas arising in the organs neighboring the urinary bladder can exhibit secondary bladder involvement via direct invasion. This condition is often noted to accompany primary carcinomas of the prostate, colon or rectum, and female genital organs. However, metastasis to the urinary bladder in cases where the primary growth lies in a remote organ is considerably less common. We report the case of a 78-year-old patient in whom a primary carcinoma in the descending colon gave rise to a secondary metastatic tumor in the urinary bladder. The results of histopathological and immunohistochemical analyses confirmed the diagnosis. Although this condition is infrequently encountered in clinical practice, the possibility of metastatic involvement of the bladder should be always be considered when another primary carcinoma has been diagnosed.