Metastases to the ureter. Review of the world literature, and three new case reports.

The rarity of metastases to the ureter justifies the reporting of three new personal cases. In two cases the primary was in the bladder, and in one case, the primary was in the prostate. In two cases there were more than one primary tumor; and in two cases the diagnosis was made at autopsy. A total of 342 cases of metastases to the ureter (including our three new cases) have been collected from the world literature and subjected to study and review.