Abstract
In a 68 year old male it was revealed he had an abdominal aortic aneurysm. His aorta suffered severe atherosclerosis and plaque. He complained of severe abdominal pain. Computed tomography and ultrasonography examination revealed no abnormal findings. We also suspected impending rupture of AAA, but the diagnosis is not confirmed. Later, he showed signs of livedo reticularis and acute renal failure. It was then revealed that ischemic enteritis due to cholesterol crystal embolism (CCE), of spontaneous onset, was the cause of his abdominal pain. Typically CCE is triggered by iatrogenic procedures, but some cases resolve spontaneously. At this initial stage, CCE displayed non- specific findings. Sometimes it is difficult to make an early accurate diagnosis.