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Key words：pneumatosis cystoides intestinalis(PCI), a-glucosidase inhibitor(a-GI), hemodialysis 〈Abstract〉 We encountered an 88-year-old male hemodialysis patient taking an oral a-glucosidase inhibitor(a-GI)who developed pneumatosis cystoides intestinalis(PCI)accompanied by intra-abdominal free air. In July 2008, the patient was placed on dialysis due to chronic renal failure derived from diabetic nephropathy. During this time, the use of insulin was discontinued and the patient began taking a-GI orally. Around late November 2008, the patient began to notice a bloating sensation in his abdomen, and was admitted to hospital on November 30 after an abdominal CT scan demonstrated the presence of intra-abdominal free air. Since there were no peritoneal symptoms, the patient was only restricted from oral intake and placed under observation. However, this did not yield any improvement in the bloating sensation in the patientʼs abdomen. On December 4, exploratory laparotomy was performed but there was no perforation of the digestive tract dected. However, PCI was found on the side of the ileal mesentery approximately 70 cm to 150 cm from the terminal ileum. Although the cause of PCI in this patient has yet to be resolved, reports of PCI caused by a-GI have recently been encountered on occasion. It was concluded that a-GI may have contributed to PCI in this case as well.

Key words：obturator hernia, male, hemodialysis 〈Abstract〉 This medical case involves a 75-year-old male who had been on hemodialysis since April, 2007 due to chronic renal failure stemming from chronic nephritis. He began experiencing abdominal distension early in July, 2012 and came to the hospital the next day for hemodialysis. Prominent distention of the intestinal tract was detected by plain X-ray of the abdomen and a diagnosis of left obturator hernia was made by plain CT of the abdomen. Hernioplasty was carried out the same day through emergency surgery, and the patient made good post-operative progress. An obturator hernia is a rare disorder that makes up only 0.073％ of all hernias and 0.4％ of all ileus. In addition, the disorder appears most commonly in older, thin women, with men affected in only 5％ of cases. In some instances, the clinical manifestation is mild, and although it is difficult to suspect obturator hernia, early diagnosis and early treatment are important since the disorder has a high fatality rate.

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