Pear-Shaped Urinary Bladder

A pear-shaped urinary bladder on urography, also appreciated as a gourd or inverted tear drop, refers to symmetric bladder compression and elevation and can be seen with the following conditions:

• Pelvic hematoma: Most common cause.
• Extraperitoeal urinoma:
• Pelvic lipomatosis: Also causes increased radiolucency of the pelvis.
• Inferior vena cava obstruction: Compression is by engorged pelvic collaterals.