The urine collects in an area in the middle of each kidney. This area is called the renal pelvis. Urine then drains from each kidney through a long, muscular tube called a ureter. There are 2 ureters ...
Many conditions, including kidney stones, cancer, and ureteral strictures can cause an obstruction. Ureteral strictures are when part of your ureter becomes scarred and narrowed. Ureteral blockages ...
This stage is also called carcinoma in situ. The cancer is only growing on the inside of the lining (mucosa) of the renal pelvis or ureter. It is not growing through it. For cancer of the renal pelvis ...