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东北三省(san sheng)撞钟纪念“九一八”80周年
肛瘺(gang lou)又稱肛管直腸瘺,是肛管或直腸與肛周皮膚相通的肉芽腫性(zhong xing)管道,主要侵犯肛管,很少涉及直腸,故常稱為肛瘺(gang lou),內口多位於齒狀綫附近,外口位於肛周皮膚處。整個瘺管壁由增厚的纖維(xian wei)...