这个词是什么意思？
Protrusion of the rectal mucous membrane through the anus. There are various degrees: incomplete with no displacement of the anal sphincter muscle; complete with displacement of the anal sphincter muscle; complete with no displacement of the anal sphincter muscle but with herniation of the bowel; and internal complete with rectosigmoid or upper rectum intussusception into the lower rectum.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012005 · MeSH 2026。
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