What are the different types of colorectal cancer tests?
There are several tests of colorectal cancer that are commonly used to screen individuals for colorectal cancer. These include simple tests such as fecal occult blood test (FOBT), digital rectal test and enema display. Other complex tests of colorectal cancer, such as sigmoidoscopy, colonoscopy and virtual colonoscopy, provide a more comprehensive screening to the patient. The doctor smears the glove, then puts his finger into the patient's rectum and feels for any abnormalities. This test includes only the lower part of the rectum and is not considered a complex screening. If any abnormalities are detected, the doctor generally recommends that the patient undergo further testing.
FOBT is a simple test that controls signs of blood stools. Although it is not diagnostically specific, blood in the faecal matter cause problems that guarantee further evaluation. FOBT is often used as a preliminary means to determine whether a larger TES is neededtinning.
Another type of test called a bastard with the bary uses X -rays to detect abnormalities. Before the X -ray, a liquid solution of Barria sulfate is inserted into the patient's rectum. Silver-white compound covers the interior of the lower gastrointestinal tract, which facilitates the visualization of polyps and other abnormal areas.
Sigmoidoscopy and colonoscopy are two more advanced types of colorectal carcinoma tests. These tests are similar and both require the patient to prepare a thorough cleaning of their large intestine in advance. Usually, patients are given a strong laxative that is used at home before testing, so the large intestine is completely empty when the test is administered.
During sigmoidoscopy, sigmoidoscope, thin, flexibletruber, it is threaded into the patient and lower colon. Sigmoidoscope is illuminated and usually has a lens attached so the doctor can display the interior of the rectumU and lower colon. It may also have a connected tool to remove or biopsy any growth that is located during the procedure.
colonoscopy is like sigmoidoscopy, except that the entire large intestine is visualized. During the procedure, the patient is usually soothed. The tool used, called colonoscope, is very similar to a sigmoidoscope. The colonoscope generally has a small camera connected to the tip to make the image projected on the video screen for the doctor.
One of the least invasive tests for colorectal cancer carcinoma is virtual colonscopy, also known as computer tomographic colonography. During this procedure, the patient's colon is used a specialized type of X -ray and these images are used to create a detailed computer image that can delay abnormalities. Although less invasive than other colorectal cancer tests, this type of screening may not be as accurate as some other tests.