A hidden ureteral metastasis that originated from prostate cancer: a case report and literature review

Prostate cancer (PCa) is now plaguing the health of middle-aged and aged men as the second most diagnosed malignancy in men worldwide. The incidence of PCa is lower in Asia than in Europe and the US, but the growth rate is much higher in Asia in recent years. The growth rate of the incidence of PCa in China was 2.1% from 1988 to 1994, and was 13.4% from 1994 to 2002 (1). Approximately 20% of PCa patients develop metastatic disease (2), and the most common metastatic sites of PCa are regional lymph nodes, bones, distant lymph nodes, lungs and liver (3). However, metastasis from primary PCa to the ureters is extremely rare. This study reports a hidden ureteral metastasis originating from PCa and reviewed relevant literature