Sigmoid torsion

The intestinal cavity is partially or completely occluded by the colonic loop with its mesangium as a fixed point and rotating along the long axis of the mesentery, which is called intestinal torsion. The twist is generally clockwise, and obstruction can occur when twisted above 180 °. Mild torsion can be less than 1 week (360?), And severe can reach 2 to 3 weeks. After the onset, on the one hand, narrowing and obstruction of the intestinal cavity may occur, and strangulation may occur due to compression of the mesangial blood vessels. The sigmoid torsion is a closed diaphragmatic intestinal obstruction. The twisted intestinal diaphragm is usually highly dilated and swollen. When the intestinal wall is overswelled, speckle-like tension necrosis or perforation can also occur.

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