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Acquired megacolon is a condition characterized by the massive enlargement and dilation of the large intestine. This condition typically develops in childhood due to a combination of improper toilet training and emotional issues that lead to a child withholding defecation. Over time, this can damage the intestinal wall's nerve supply, causing the rectum to fill with impacted feces and the colon to enlarge progressively.12

In adults, acquired megacolon can be linked to certain medications, thyroid dysfunction, diabetes mellitus, scleroderma, or amyloidosis. Treatment often involves psychiatric intervention to re-establish bowel training, and in severe cases, surgical removal of parts of the colon may be necessary.12

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