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A colonoscopy detects colorectal cancer through direct visualization of the colon and rectum, using a long, flexible tube called a colonoscope equipped with a light and a tiny video camera. This process serves both a diagnostic and preventive function:Direct Visualization: The doctor slowly guides the scope through the entire length of the large intestine, transmitting high-resolution images to a monitor to inspect the lining for suspicious masses, ulcers, or abnormal tissue patterns.Polyp Removal: Most colorectal cancers start as benign growths called polyps. During the procedure, the doctor can pass specialized tools through the scope to remove these polyps (polypectomy) before they have the chance to turn into cancer.Biopsies: If a larger mass, ulcer, or suspicious lesion is found, the physician can take a small tissue sample (a biopsy) through the scope.The removed polyps or tissue samples are sent to a laboratory, where a pathologist examines the cells under a microscope to confirm if they are benign, precancerous, or malignant.For more details on why it is considered a gold-standard screening method, visit the American Cancer Society or Mayo Clinic.

AI google: A colonoscopy detects colorectal cancer through direct visualization of the colon and rectum, using a long, flexible tube called a colonoscope equipped with a light and a tiny video camera. This process serves both a diagnostic and preventive function: [1, 2, 3, 4]
  • Direct Visualization: The doctor slowly guides the scope through the entire length of the large intestine, transmitting high-resolution images to a monitor to inspect the lining for suspicious masses, ulcers, or abnormal tissue patterns. [1, 2]
  • Polyp Removal: Most colorectal cancers start as benign growths called polyps. During the procedure, the doctor can pass specialized tools through the scope to remove these polyps (polypectomy) before they have the chance to turn into cancer. [1, 2]
  • Biopsies: If a larger mass, ulcer, or suspicious lesion is found, the physician can take a small tissue sample (a biopsy) through the scope. [1, 2]
The removed polyps or tissue samples are sent to a laboratory, where a pathologist examines the cells under a microscope to confirm if they are benign, precancerous, or malignant. [1]
For more details on why it is considered a gold-standard screening method, visit the American Cancer Society or Mayo Clinic. [1, 2]

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