"pelvic haematoma: the original description of the inverted pear-shaped bladder was in patients with pelvic trauma and haematoma; it can also be seen in patients receiving anticoagulation therapy"
"bilateral iliac artery aneurysms; upright pear-shaped"
"causes formation of collateral vessels that compress the bladder and form an inverted pear-shaped bladder; in the days of intravenous urograms, the combination of a renal mass and a pear-shaped bladder was a red flag for renal cell carcinoma involving the renal vein and IVC 2"