A rare case of asymptomatic inferior phrenic artery aneurysm treated with endovascular therapy.

Inferior phrenic artery aneurysms (IPAAs) are extremely rare, with only 17 reported cases. Most were diagnosed following ruptured, and developed secondary to trauma, surgery, or pancreatitis. We report a case of an asymptomatic unruptured IPAA treated endovascularly. A 73-year-old man without a history of laparotomy, trauma, or pancreatitis had a 6.8-mm saccular IPAA identified incidentally on computed tomography angiography during a comprehensive health checkup. Coil embolization was successfully performed without complications. Given the rarity of IPAAs, a gold standard therapy has not been established. However, endovascular therapy appears to be a safe and effective treatment option.