Urinary Tract Obstruction Most common sites Urinary Tract Obstruction Most common sites Normal points of Narrowing are the most common sites of UTO – UP, UV, BN, UM- Ureteropelvic Junction (UP) Ureterovesical Junction (UV) Bladder Neck (BN) Urethral Meatus (UM) ... Urinary Tract Obstruction most common sites Share: