结论肿瘤是引起小肠出血的主要原因，其次为小肠憩室、炎性肠病及血管病变。
Conclusion Tumor is the most common cause of small intestinal bleeding. Other causes are small intestinal diverticulum, inflammatory small intestinal diseases and angiodysplasia.
憩室，支囊，膨部：从肠之类的中空器官或结构上分支出来的袋或囊。
Diverticulum: a pouch or sac branching out from a hollow organ or structure such as the intestine.
憩室细菌感染引起炎症，并可能在肠壁内引起穿孔和其他严重并发症。
Bacterial infection of these diverticula cause inflammation that may lead to a perforation in the wall of the intestine and other serious complications.
LGIB前3位病因依次为结、直肠息肉、梅克尔憩室和肠重复畸形。
The first 3 most common etiologies of LGIB were colonic or rectal polypi, Meckel diverticulum, intestine duplication respectively.
憩室，支囊，膨部从肠之类的中空器官或。
A pouch or sac branching out from a hollow organ or structure, such as the intestine.
憩室，支囊，膨部从肠之类的中空器官或。
A pouch or sac branching out from a hollow organ or structure, such as the intestine.
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