Colorectal cancer screening tests check for signs of colorectal cancer . Colorectal cancer is a type of cancer It affects the colon or rectum. The colon forms the bulk of the large intestine. The rectum is at the end of the colon and connects to the anus.
Colorectal cancer is a leading cause of cancer of deaths in the United States. Screening has the potential colorectal cancer find that treatment is more effective sooner. The colon rectum cancer screening Sometimes it may prevent it cancer even prevent cancer. This is because certain types of screening tests abnormal growths of care providers called polyps can be found and sent away. as colorectal Polyps. Most of these polyps are considered benign (not carcinogenic) but are at risk of changing with cancer if not removed.
Other names: colon cancer screening
What are they used for?
Colorectal cancer screening tests They are used for drawing tests of colorectal cancer and/or to remove colorectal polyps.
Why do I need a colorectal cancer screening test ?
The National Cancer Institute and other specialized medical groups advise people to undergo regular screening. screenings for colorectal cancer It starts at age 50. The South American Cancer Story advises people to begin screening at age 45. You should talk to your own doctor about when to start and look into different types. of screening tests .
You may need to be screened No matter how young age or more often, if you have certain risk points:
- A family history of colorectal cancer
- Previously had colorectal polyps
- Family history or presence of ovaries cancer
- Inflammatory diseases of the intestinal tract, such as ulcerative colitis or Crohn’s disease.
What happens during a colorectal cancer screening ?
There are two main types of colorectal cancer screening tests : visual inspection and stool. tests . There are different options for both types. of tests .
A visual study is a procedure that allows the physician to examine the colon and rectum. It is performed using a narrow tube with a camera attached or using a special imaging device. Advantages of visual studies include
Colonoscopy. This test It allows the provider to view the entire colon and rectum. This is often done in an outpatient clinic or in the outpatient clinic of a health center. For the the test procedure called bowel preparation, the colon (colon) must be emptied During the day the test :
- you are at the examination table.
- You will certainly get a calming tool to help you relax. This will also redeem you from painful emotions during the procedure. You will be able to wake up the test But you probably won’t remember anything.
- The colonoscope, which is a thin illuminated tube with a camera attached, is inserted into the rectum and colon.
- Your doctor will look for for colorectal polyps or other abnormal areas.
- The doctor can send a polyp or tissue sample using a special instrument inserted into the endoscope.
- The polyp or tissue sample can then be sent for laboratory study.
The calming agent you receive can put you to sleep for several hours. You must arrange for someone to take you home.
S. Microscopic examination. Here. test Have your doctor look at the lobes under your colon. In the direction of the the test :
- The patient lies on an examination table, kneeling on the chest.
- The S-shaped microscope, a flexible, illuminated tube with a camera attached, is inserted into the lower LOB of the rectum and colon.
- Air is pushed through the S-shaped microscope to simplify the colon and make it more visible.
- The air can force the bowel to have movement or feel what gas should be passed through.
- The doctor can send a polyp or tissue sample using a special instrument inserted into the endoscope.
- The polyp or tissue sample can then be sent for laboratory study.
Virtual colonoscopy. This is an x-ray recording that uses a computed tomography scanner (CT) to create a thorough three-dimensional image of the entire colon and rectum. This is usually performed in an outpatient clinic or in the radiology department of a medical center. The intestinal tract must be prepared in advance for this procedure. During the day the test :
- You are lying on a narrow table.
- You will be asked to drink fluids with contrast fluid. Contrast fluid is a substance that makes parts of the body more clearly visible on X-rays.
- The doctor will bring a tube up your rectum.
- Air is pumped through the tube to make the colon appear larger.
- The table is slid into the computer.
- A series of images are created.
Stool tests Look at the pattern of the stools. of cancer . For these tests The monster is taken from the stool and sent to the lab. Types of stools tests :
Fecal occult blood tests . These tests See if there is hidden (occult) blood in the stool. Blood in stools can be a symptom of polyps cancer or other disorders. Your caregiver will provide you with a kit with a manual. the test .
There are two similar tests for occult blood in stools tests Fecal immunochemistry test (conformity) and Guaica’s full method (GFOBT). Here are the usual notes for each test field instructions, which may vary slightly from manufacturer to manufacturer. the test kit.
For fecal immunochemistry test (appropriate) you will probably need
- Collect samples on two or three separate seats.
- Using the special brush or separate device in the kit, collect the toilet samples.
- Using the brush or device for each sample, remove the sample from the stool surface.
- Brush the monster with the a test card.
- Label and seal all smears as shown.
- Send the samples to your own health care provider or lab
For a guaiac smear test (gfobt), possibly required:
- Collect three separate defecation samples.
- Collect each sample stool and store in a clean container. Make sure the samples are not mixed with urine or toilet water.
- Use the applicator from you test Spread the set on several stools the test Map or object glass still in the kit.
- Label and seal all smears as shown.
- Send the samples to your own health care provider or lab
Stool DNA test . This test Check the genetic makeup of the stool for possible signs of colorectal polyps or cancer Your care provider gives you one to one aristocrat a test Kit. The kit will include notes on how to prepare the sample. the test Instructions will probably include the correct procedure.
- Place the special container in the toilet.
- Collect the entire intestinal tract.
- The container is closed and sealed.
- Send the container with the prototype stool to the lab for testing.
You will need to arrange something in preparation for the test. the test ?
No special preparation is needed to make the stool or stools DNA test Typical fabrication for others colorectal cancer screening tests are below.
You will need to prepare the intestinal tract for the colonoscopy and virtual colonoscopy. Your physician will provide specific instructions on how to prepare the bowel tube, but the procedure to prepare the bowel tube may be admissible.
- 1-3 days prior the test .
- 1-3 days prior, drink plenty of unpolished liquids. the test Field clean water includes water, dark coffee or tea, fat-free soups, and sports drinks.
- Drink strong liquid laxatives or have en bowel in the evening before conception. test .
Laxatives or en bowel will certainly help to empty your bowels. You should be prepared to spend a lot of time in the bathroom. Preparing the intestinal tract can be uncomfortable and unpleasant, but if the colon has not been thoroughly cleaned, the doctor will not be able to take a perfect picture of your colon and rectum. Polyps and other abnormal areas do not have a good chance of being determined.
In the case of Sigmodoscopy, to. the test , you may need to:
- Follow a colorless watery diet one or several days before the procedure. This is not necessary every time, so this should be discussed beforehand. the test .
- On the day of the procedure ask to be fast (do not eat or drink).
- Use en bowel about 1 hour before the procedure to empty the intestinal tract. Sometimes a second en bowel is important.
For a g(FOBT) test It may be necessary to disregard appropriate products and medications several days before the procedure. test :
- Nonsteroidal, anti-inflammatory drugs (NSAIDs) such as ibuprofen, naproxen, aspirin
- supplements, fruit juices, more than 250 mg of vitamin C per day from fruit.
- Red beef is like meat, lamb, or pork.
Your midwife or gynecologist will give you all the information on how to prepare for your screening test .
Voyage. the test ?
There are no risks associated with getting occult blood in your feces test or a stool DNA test .
Serious risks of colonoscopy are rare, but every chance is there.
- Cracks in the wall of the colon or rectum
- Bleeding
- Reaction to sedation
S less risky than colonoscopy. Colon and bleeding fissures have a better chance, but are less common than colonoscopy.
With virtual colonoscopy, risks include
- Exposure to small amounts of radiation from the scan.
- Rarely, a fissure in the colon or rectum can occur when blasted with air.
What do the results mean?
If the mystery blood in your feces test or stool DNA test There have been unusual results, this does not necessarily mean that you have cancer your doctor probably needs to order more tests such as a colonoscopy to make a diagnosis.
Abnormal results of other types of diseases of screening tests that can be correctly connected:
Colonoscopy
- Colorectal polyps or abnormal material is identified and removed.
- Samples sent to laboratory for testing.
Most polyps are not considered carcinogenic, but may turn into polyps cancer If they are not removed. Depending on the amount and number of polyps, the physician can advise performing colonoscopies more frequently.
Sigmoidoscopy
- Colorectal polyps or abnormal material are identified. Depending on their location, there is a good chance whether they will be removed or not.
- Regardless of whether the polyps are removed or not, you will probably need a colonoscopy so that your doctor can see your entire colon and rectum.
Virtual Colonoscopy
- Colorectal polyps or abnormal material is documented on a CT scan.
- A classic colonoscopy is probably required so that the physician can take a tissue sample. This procedure may be performed the same day as the virtual colonoscopy.
If you have questions about the results, talk to your own doctor.
Is there really anything else I should know? a colorectal cancer screening ?
Each type of screening test There are excellent quality and there are flaws. You and your physician should discuss the excellent qualities and dangers of each option. The right one has the opportunity to assist you in your decision.
- Look at the entire thick gut.
- Can remove polyps and test for cancer
- Helps to find other diseases.
- Only needed every 10 years (if no polyps have been found in the past) tests )
- Low risk of cracking or bleeding
- Requires bowel preparation
- Procedure requires anesthesia
- Need as few days as possible for bowel preparation and recovery
- Usually does not require bowel preparation
- Usually does not require anesthesia
- Needed every 5 years (unless polyps have been found in the past) tests )
- Only see one-third of the colon
- Can miss small polyps
- Cannot examine all polyps
- Very small risk of cracking or bleeding
- Not widely used as a screening test
- If the findings are abnormal, a colonoscopy is needed
- Look at the entire thick gut.
- No notes needed
- Needed every 5 years (unless polyps have been found in the past) tests )
- Requires bowel preparation
- Can miss small polyps
- Exposure to small amounts of radiation
- If results are considered abnormal, a conventional colonoscopy is required
- Fairly new test Not reimbursed by insurance
- No colon risk
- No bowel preparation
- Monster can be collected at home
- Can give false positive results
- May not detect PRECANCERE configurations (cells that run the risk of changing cancer cells) cancer )
- May miss polyps and / or / or symptoms cancer
- If the findings are abnormal, a colonoscopy is needed
- Must be made annually
- No colon risk
- No bowel preparation
- Monster can be collected at home
- Can give false positive results
- May not detect pre-pregnancy changes
- May miss polyps and / or / or symptoms cancer
- Dietary restrictions required prior to testing
- If the findings are abnormal, a colonoscopy is needed
- Must be made annually
- No colon risk
- No bowel preparation
- Monster can be collected at home
- Can give false positive results
- May not detect pre-pregnancy changes
- May miss some cancers
- If the findings are abnormal, a colonoscopy is needed
- Must be made every 3 years
- Fairly new test Not reimbursed by insurance
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