Non-occlusive Mesenteric Ischemia with Significant Hyperphosphatemia.

An 86-year-old Japanese woman was referred to our hospital due to the sudden onset of abdominal pain. Abdominal contrast-enhanced computed tomography (CT) revealed no signs of ischemic bowel; however, laboratory investigations revealed metabolic lactic acidosis, elevation of inflammatory markers, and a remarkable elevation in the serum phosphate level. A prompt surgical evaluation revealed non-occlusive mesenteric ischemia (NOMI). Elevated serum phosphate levels may suggest extensive bowel ischemia or infarction, which can lead to a prompt surgical evaluation, even in the absence of specific radiological findings.