Hernia, scar tissue: The two most common causes are hernias and scar tissue. A hernia is a defect in the abdominal cavity. The intestine gets stuck in this defect, causing a blockage. If it stays too long, this portion of the intestine can die. Similarly, scars in the abdomen, usually from previous surgery, can result in a blockage when the intestine gets tangles around the scar tissue. Other causes are less likely.
Answered 8/13/2018
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