Abstract
An 82-year-old woman with disturbance of consciousness was admitted to our hospital. Blood examination results showed renal failure, hyponatremia, and hypokalemia. Endocrine function was normal. Abdominal computed tomography images revealed a 53-mm tumor and intussusception in the recto-sigmoid. Contrast enema results revealed a concave pressure defect. Endoscopic examination revealed a continuous circumferential villous tumor located at 5 cm from the lower rectum, which could have intussuscepted due to peristalsis. We diagnosed EDS due to villous tumor of rectum and performed a Hartmann procedure ; the resected specimen showed a 140 × 110 mm circumferential villous tumor, and pathological investigation revealed adenocarcinoma with an adenoma component. EDS is a rare disorder characterized by a villous tumor leading to chronic secretory diarrhea which in turn leads hypokalemia, hyponatremia, and renal failure. Intussusception in adults is rare in comparison with children.
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