It causes bleeding in the lower gastrointestinal tract and associated with liver cirrhosis, chronic renal failure, and valvular heart disease.
The causes of bleeding in the small bowel are different from those in the colon or the stomach. The most frequent causes of bleeding from the colon are polyps, diverticulosis (small out-pouchings in the wall of the colon), or cancer. Upper GI (esophagus, stomach, or duodenum) bleeding is most frequently due to ulcers. The small bowel (or small intestine), a vital organ involved in nutrient absorption, is the longest portion of the gastrointestinal (GI) tract. Called “small” because it is thin or narrow compared to the “large” bowel (also known as the colon), it is much longer than the large bowel (15 feet on average). Colonic angioectasia causes bleeding in the lower gastrointestinal tract. This presence is often associated with liver cirrhosis, chronic renal failure, and valvular heart disease. It is also used to separate two ideas.    In anatomy, the colon is in your large intestine, beginning at the  end of the small intestine and ending at the rectum. Colonic angioectasia causes bleeding in the lower gastrointestinal  tract. This presence is often associated with liver cirrhosis,  chronic renal failure, and valvular heart … disease. 4 people found this useful. Answered by The Community. Making the world better, one answer at a time. Angioectasia is a venous lesion that requires cauterization; a Dieulafoy's lesion and arteriovenous malformation may cause arterial bleeding, which requires clipping or laparotomy. In the small bowel, 30 to 40% of bleeding is caused by abnormal blood vessels in the wall of the small bowel. These abnormal blood vessels have many names, including angioectasias, angiodysplasias, or arteriovenous malformations (AVMs). The small bowel (or small intestine) is the longest portion of the gastrointestinal (GI) tract. It is called small because it is thin or narrow compared with the large bowel (also known as the colon), but it is much longer than the large bowel (14 feet on average). Background. Angiodysplasia is the most common vascular lesion of the gastrointestinal tract, and this condition may be asymptomatic, or it may cause gastrointestinal (GI) bleeding. The vessel walls are thin, with little or no smooth muscle, and the vessels are ectatic and thin (see image below). Angiodysplasia identified on cecum wall during colonoscopy. Phillips first described a vascular abnormality that caused bleeding from the large bowel in a letter to the London Medical Gazette in 1839. In the case of the colon, wall tension refers to intramural tension, the pressure difference is that between the bowel lumen and the peritoneal cavity, and cylinder radius is the radius of the right colon. Wall tension is highest in bowel segments with the greatest diameter, such as In medicine (gastroenterology), angiodysplasia is a small vascular malformation of the gut. It is a common cause of otherwise unexplained gastrointestinal bleeding and anemia. Lesions are often multiple, and frequently involve the cecum or ascending colon, although they can occur at other places. Treatment may be with colonoscopic interventions, angiography and embolization, medication, or occasionally surgery. Signs and symptoms [edit]. Although some cases present with black, tarry stool (melena), the blood loss can be subtle, with the anemia symptoms predominating. Fecal occult blood testing is positive when bleeding is active. Colonic arteriovenous malformation (AVM) is one of the causes of lower GI bleeding. Unlike small vascular ectasia or angiodysplasia, colonic AVM tends to be solitary, large in size, and identified endoscopically as flat or as an elevated bright red lesion. In the case of the colon, wall tension refers to intramural tension, the pressure difference is that between the bowel lumen and the peritoneal cavity, and cylinder radius is the radius of the right colon. Wall tension is highest in bowel segments with the greatest diameter, such as A colonic is a cleansing of the colon, or lower large intestine, either by water (as in an enema) or by dietary supplements which cause the body to void, or empty the colon (a … similar process is used before a colonoscopy). It is also used to separate two ideas.    In anatomy, the colon is in your large intestine, beginning at the  end of the small intestine and ending at the rectum. The causes of bleeding in the small bowel are different from those in the colon or the stomach. The most common causes of bleeding from the colon are polyps, diverticulosis (small out-pouchings in the wall of the colon), or cancer. The small bowel (or small intestine) is the longest portion of the gastrointestinal (GI) tract. It is called small because it is thin or narrow compared with the large bowel (also known as the colon), but it is much longer than the large bowel (14 feet on average).
http://www.sundaytimes.lk/111016/MediScene/mediscene_7.html http://www.answers.com/Q/What_is_colonic_angioectasia http://www.answers.com/Q/What_is_angioectasias http://patients.gi.org/topics/small-bowel-bleeding/ http://emedicine.medscape.com/article/170719-overview https://en.wikipedia.org/wiki/Angiodysplasia http://emedicine.medscape.com/article/170719-overview http://www.answers.com/Q/What_is_colonic_angioectasia http://patients.gi.org/topics/small-bowel-bleeding/
what is a colonic angioectasia