A ruptured aneurysm of the pancreaticoduodenal arteries is an emergency condition, with a high mortality rate. Therefore, early diagnosis and adequate management are needed. Recently, treatment with a transcatheter arterial embolization has decreased the mortality rate. A 68-year-old man presented with persistent abdominal pain and dyspnea. Contrast abdominal computed tomography revealed a large retroperitoneal hematoma, with an actively bleeding focus. An urgent celiac and superior pancreaticoduodenal arteriogram showed a contrast extravasation, about 15 X 8 mm in size, with a saccular aneurysm of the distal anterior superior pancreaticoduodenal artery; therefore transcatheter arterial embolization was performed. The patient's condition improved without complication after the embolization.