Life-threatening hemorrhage of an unanticipated superficial circumflex iliac artery origin imaged with Tc-99m-labeled erythrocytes

The authors report, for the first time, the nuclear medicine diagnosis of e xtraperitoneal bleeding that originated from the superficial circumflex ili ac artery and review the critical role of dynamic nuclear imaging technique s in the localization of sites of nonenteric hemorrhage, Dynamic imaging te chniques using Tc-99m-labeled erythrocytes played a critical role in the lo calization of an extraperitoneal bleeding site near the entrance site of a Jackson-Pratt drain, Localization of the site remained undiagnosed before n uclear imaging despite two exploratory laparotomies and diagnostic angiogra phy.