Search results
Results from the WOW.Com Content Network
The size of the ulcers is usually 0.5–4 cm. [5] The lesion is most often located on the anterior (front) or lateral (side) rectal wall, centered on a rectal fold, [1] usually 10 cm from the anal verge. [8] Less commonly there may be ulcers in the anal canal or even in the sigmoid colon. [5]
Stercoral ulcer is an ulcer of the colon due to pressure and irritation resulting from severe, prolonged constipation due to a large bowel obstruction, damage to the autonomic nervous system, or stercoral colitis. It is most commonly located in the sigmoid colon and rectum.
Solitary rectal ulcer syndrome (SRUS) is a rare benign disease characterized by symptoms, clinical findings, and histological abnormalities. [9] Only 40% of patients have ulcers; 20% of patients have a single ulcer, and the remaining lesions range in size and form from broad-based polypoid to hyperemic mucosa. [10]
A lower gastrointestinal bleed is defined as bleeding originating distal to the ileocecal valve, which includes the colon, rectum, and anus. [2] LGIB was previously defined as any bleed that occurs distal to the ligament of Treitz, which included the aforementioned parts of the intestine and also included the last 1/4 of the duodenum and the entire area of the jejunum and ileum. [1]
Rectal bleeding refers to bleeding in the rectum, thus a form of lower gastrointestinal bleeding. There are many causes of rectal hemorrhage, including inflamed hemorrhoids (which are dilated vessels in the perianal fat pads), rectal varices , proctitis (of various causes), stercoral ulcers , and infections .
Despite treatment, re-bleeding occurs in about 7–16% of those with upper GI bleeding. [3] In those with esophageal varices, bleeding occurs in about 5–15% a year and if they have bled once, there is a higher risk of further bleeding within six weeks. [13] Testing and treating H. pylori if found can prevent re-bleeding in those with peptic ...
When present, symptoms usually relate to painless bleeding, with vomiting blood (hematemesis) and/or black stools . [3] Less often, Dieulafoy's lesions may cause rectal bleeding (hematochezia), or rarely, iron deficiency anemia. Usually, there are no gastrointestinal symptoms that precede the bleeding (abdominal pain, nausea, etc.).
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]