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The purpose of a colonoscopy is to provide a visual diagnosis via inspection of the internal lining of the colon wall, which may include identifying issues such as ulceration or precancerous polyps, and to enable the opportunity for biopsy or the removal of suspected colorectal cancer lesions. [4] [5]
When caused by cancer, bowel perforation typically requires surgery, including resection of blood and lymph supply to the cancerous area when possible. When perforation is at the site of the tumor, the perforation may be contained in the tumor and self resolve without surgery. However, surgery may be required later for the malignancy itself.
Pouchoscopy is a minimally invasive endoscopic procedure to examine an ileo-anal pouch, a replacement for the colon / rectum which is surgically created from the small intestine (ileum) as treatment for ulcerative colitis, a preventive measure in certain genetic illnesses such as FAP or HNPCC or as a procedure in the treatment of colon cancer.
Endoscopic submucosal dissection (ESD) is an advanced surgical procedure using endoscopy to remove gastrointestinal tumors that have not entered the muscle layer. ESD may be done in the esophagus, stomach or colon. Application of endoscopic resection (ER) to gastrointestinal (GI) neoplasms is limited to lesions with no risk of nodal metastasis.
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.
Colectomy as treatment for colorectal cancer also includes lymphadenectomy, or removal of surrounding lymph nodes, which may be done for staging of the cancer or removal of cancerous nodes. [11] More extensive lymphadenectomy is sometimes accomplished by the removal of the mesocolon , the fatty tissue adjacent to the colon, which contains blood ...