Nontoxic megacolon

Last revised by Mohammad Taghi Niknejad on 5 Sep 2022

Nontoxic megacolon refers to colonic dilatation of more than 6 cm in an adult without mural abnormality. This is in contrast to toxic megacolon, an acute complication accompanied by mural abnormalities such as thickening, loss of haustral folds, pneumatosis or free gas.

The differential diagnoses include:


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