Ver el código de «Template:Lower GI bleeding DDX»

===[[Undifferentiated lower gastrointestinal bleeding]]===
*[[Upper GI Bleeding]]
*Diverticular disease
**[[Diverticulosis]]
**[[Diverticulitis]]
*Vascular ectasia / angiodysplasia
*[[Inflammatory bowel disease]]
*Infectious [[colitis]]
*[[Mesenteric Ischemia]] / [[ischemic colitis]]
*[[Meckel's diverticulum]]
*[[Colorectal cancer]] / polyps
*[[Hemorrhoids]]
**[[Internal hemorrhoid]]
**[[External hemorrhoid]]
*[[Aortoenteric fistula]]
**Nearly 100% mortality if untreated
**Consider in patients with gastrointestinal bleeding and known abdominal aortic aneurysms or aortic grafts
*[[Rectal foreign body]]
*Rectal ulcer ([[HIV]], [[Syphilis]], [[STI]])
*[[Anal fissure]]