Lower G-I bleeding after an appendectomy is a rare complication. 摘要闌尾切除手術(shù)后發(fā)生下消化道出血，是相當罕見(jiàn)的手術(shù)并發(fā)癥。
Angiodysplasia of the colon is an important cause of lower GI bleeding.With increase popularity of the colonoscopic examination, more of this hind vascular lesion was detected. 摘要大腸血管形成異常是下消化道出血的一個(gè)重要原因，在大腸鏡檢查日益普及的今天，愈來(lái)愈多這類(lèi)血管病變發(fā)現。
