سرطان القولون والمستقيم

Colorectal cancer begins with a polyp that develops in the colon or rectum. When this polyp is covered with adipose tissue it can change into an adenoma, a specific type of polyp, or adenocarcinoma, a type of cancer that contains mucus and other fluids. The tests to detect colon cancer are usually carried out through colonoscopy, a test that introduces a thin and flexible tube with a camera (endoscope) into the anus, and virtual colonoscopy, a radiological examination that obtains images. The purpose of these tests is to determine the presence of adenomas and polyps in the colon and to surgically remove them before they become cancerous.