Primary forms of<unk>  can occur at any age, although it is found in adults more commonly than children. The most common cause of<unk>  in children is Minimal Change Disease where they make up a majority of cases. There are 10-50 cases per 100,000 children, with male cases being twice as common as female cases. In adults, the opposite is true with Focal Segmental Glomerulosclerosis being the more common. This form is found to be 1.5 times more common in men than women, and some studies suggest that it is found in higher incidences in Blacks than Whites and Hispanics.
Glomerulonephrosis
Hydronephrosis
Pyonephrosis
Ureteric stricture
Pyelonephritis
Ureteral cancer
Obstructive uropathy
Ectopic ureter