Dukes D: Colorectal Cancer Recurrences ? Learning Surgery

June 5th | Learning Surgery

Cancer from a colon polyp A polyp is defined as a colorectal mass that protrudes into the lumen of the colon. These masses may be either sessile or pedunculated. Adenomas are benign tumors with dysplasia. Non-neoplastic polyps are without dysplastic features and include mucosa, hyperplastic polyps, inflammatory, and hamartomatous. About 70% of polyps removed are colonoscopically adenomas. There is now a general consensus that most colon cancers arise from preexisting polyps. The lifetime risk of an adenoma into a malignant tumor is estimated at 5% to 10%, and processing time is estimated at 5 to 15 years. Less than 2% of adenomas less than 1 cm host cell carcinoma, while the percentage increases to about 10% for adenomas of 1 cm 2 and 50% for adenomas larger than 2cm. Colonoscopy and polypectomy are complete healing in patients with carcinoma in situ, as these lesions do not seem to have the potential to metastasize. Figure 25.7. Sessile and pedunculate illustrating the classification of Haggitt levels of invasion. 466 SF Lowry and TE Eisenstat therapy of metastatic colorectal cancer in 100 patients with colorectal cancer, about 50 are cured by surgery, 15 developed local recurrence, and 35 to develop blood-borne distant metastases. The organs most frequently involved in metastasis are liver, lung, bone and brain. Up to 15% of patients have liver metastases at their commissioning, and 30% of patients undergoing curative resection, liver metastases have apparently not obvious to the surgeon during the operation. Patients with disease disseminated beyond the scope of surgical resection are eligible for chemotherapy. Therapy for locally recurrent colorectal cancer

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Tags: cancer, Colorectal, D, Dukes, Recurrences

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