Retroperitoneal Hemorrhage

The most common source of traumatic retroperitoneal hemorrhage is a pelvic fracture (399). Associated urinary bladder tears and lacerations of major pelvic vessels are

Fig. 44. Retroperitoneal hemorrhage. (A) In situ demonstration of renal artery laceration (arrow). (B) Renal cortical lacerations covered by blood clot.

encountered (399). Perinephric hemorrhage necessitates an in situ inspection of the renal arteries and veins to exclude laceration (Fig. 44). Renal cortical tears also bleed (Fig. 44). Isolated psoas muscle hemorrhage has been described (400). Retroperitoneal hemorrhage, without a recognizable origin, does occur (399).

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