Simultaneous upper and lower genitourinary injuries after blunt trauma highlight the need for delayed abdominal CT scans

An abdominal CT scan with oral and intravenous contrast did not demonstrate contrast extravasation from either kidney (Fig 1). Computed tomographic (CT) scan is the gold standard for imaging blunt trauma to the genitourinary tract. Contrast extravasation may not appear on the initial films because the kidneys are scanned before contrast material is excreted into the collecting system and ureter. [...]delayed scans should be done 5 to 10 minutes after the initial injection of contrast material during the excretory phase.