《英文msh词典》Fissure,Anal
[入口词] Fissure,Anal
[主题词] Fissure in Ano
[英文释义] A painful linear ulcer at the margin of the anus. It appears as a crack or slit in the mucous membrane of the anus and is very painful and difficult to heal. (Dorland,27th ed & Stedman,25th ed)