Characteristic Findings of an Ileosigmoid Knot with MDCT

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  • MDCTで特徴的な画像が得られたileosigmoid knotの1例
  • -A Case Report-

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Abstract

A 63-year-old woman with no previous relevant history was seen in the emergency room because of left lower abdominal pain and vomiting. Abdominal CT showed a small amount of ascites, dilatation of the sigmoid colon and small intestine, concentration of the mesenterium, and a closed loop of the small intestine with thickened wall. We suspected a strangulated ileus, and performed an emergency operation. On laparotomy, an ileosigmoid knot was found to have formed, resulting in strangulation of the small intestine. Subsequently, the knot was carefully released, followed by resection of the necrotic small intestine. The postoperative clinical course was uneventful. The ileosigmoid knot is a relatively rare condition, and the preoperative diagnosis is difficult. When we examined the MDCT images retrospectively, they showed the characteristic finding that the knot itself was described. MDCT may be useful for the preoperative diagnosis of this difficult to diagnose condition.

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