Toxic megacolon is defined as a severe episode of colitis with segmental or total dilatation of the colon.It typically presents with systemic signs such as fever, tachycardia, and hypotension.

• 摘要毒性巨肠症的定义为病情严重的大肠炎同时引发大肠的急性胀大，它典型的全身性毒性症候有：高烧、心跳过速和低血压。