N36: Other disorders of urethra

N36.2: Urethral caruncle

The urinary passages include the ureters, bladder and urethra. Urine flows from both kidneys into the bladder via the ureters. The urethra channels the urine outward from the bladder. The urethra is like a movable tube. It is hollow inside. The urethral wall is lined with mucous membrane. The mucosal lining is made up of many components, the cells.

If the cells of the mucosal lining multiply, it can start to bulge into the urethra. These bulges can protrude outwards through the opening of the urethra. This may be visible from outside.

If part of the urethra protrudes outwards, people may have problems urinating. They may possibly also have pain in the lower abdomen or between their legs, particularly when urinating. There may also be some bleeding from the urethra.