Foreign body in bladder and perivesicular inflammation masquerading as pelvic lipomatosis.

Inverted teardrop-shaped bladder deformity ofetn is caused by pelvic lipomatosis or perivesical accumulation of extravasated blood or urine, or both. A foreign body (toothpick) lodged in the bladder and resulting in urinary infection and perivesical inflammation also was found to be capable of causing this unusual bladder deformity. The bladder contour returned to normal after removal of the foreign body and treatment of infection.