A Delayed Pseudoaneurysm Rupture in Low-Grade Splenic Injury

the complications of splenic injury not managed surgically. However, delayed pseudoaneurysm rupture in low-grade splenic injury is extremely rare. I report the case of a 74-year-old man with low-grade splenic injury who suffered delayed pseudoaneurysm rupture. The patient was admitted with low-grade splenic injury (grade II Organ Injury Scale [OIS] score according to the American Association for the Surgery of Trauma [AAST]). On chest computed tomography on day 6, a pseudoaneurysm approximately 2.5 × 1.5 × 2.5 cm in size appeared in the spleen; however, the physician missed this finding at that time. On day 13, chest computed tomography confirmed pseudoaneurysm rupture. The ruptured pseudoaneurysm was successfully treated with transcatheter arterial embolization. This rare case is reported to describe the entire process from occurrence to rupture of the splenic pseudoaneurysm in a low-grade splenic injury.