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PPCS is caused by an electrocautery-induced injury to the wall of the colon that occurs during removal of colon polyps. [3] PPCS occurs when the electric current extends beyond the mucosa, entering the muscularis propria and serosa, resulting in a full thickness (transmural) burn injury. [ 1 ]
For example the mucosal changes that occur with external rectal prolapse can be separated from the mucosal changes seen in SRUS. [ 6 ] The excessive pressure caused by straining (dyssynergic defecation and constipation) may in the long term lead to development of the spectrum of rectal prolapse conditions (mucosal versus full-thickness prolapse ...
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]
Polyps are either pedunculated (attached to the intestinal wall by a stalk) or sessile (grow directly from the wall). [5] [6]: 1342 In addition to the gross appearance categorization, they are further divided by their histologic appearance as tubular adenoma which are tubular glands, villous adenoma which are long finger like projections on the surface, and tubulovillous adenoma which has ...
Solitary juvenile polyps most commonly occur in the rectum and present with rectal bleeding. The World Health Organization criteria for diagnosis of juvenile polyposis syndrome are one of either: More than five juvenile polyps in the colon or rectum; or; Juvenile polyps throughout the gastrointestinal tract; or
Colonic polypectomy is the removal of colorectal polyps in order to prevent them from turning cancerous.. Method of removing a polyp with a snare. Gastrointestinal polyps can be removed endoscopically through colonoscopy or esophagogastroduodenoscopy, or surgically if the polyp is too large to be removed endoscopically.
While colon polyps are not commonly associated with symptoms, occasionally they may cause rectal bleeding, and on rare occasions pain, diarrhea or constipation. [9] They are a concern because of the potential for colon cancer being present microscopically, and the risk of benign colon polyps becoming malignant over time. [ 10 ]
Serrated polyposis syndrome often does not cause symptoms. The risk of colon cancer is between 25 and 40%. [8] Sessile serrated polyps, as seen during endoscopy or colonoscopy, are flat (rather than raised) and are easily overlooked. Serrated lesions range in size from small (<5 mm) to large, and often have a "mucous cap" overlying the polyp.