90%
Colorectal cancer can be prevented or successfully treated when caught early through regular screening. This guide provides comprehensive information about screening options, recommendations, and what to expect.
Why Colorectal Cancer Screening Matters
Colorectal cancer is the third most common cancer diagnosed in both men and women in the United States. However, it's also one of the most preventable cancers through regular screening. Screening can find precancerous polyps so they can be removed before they turn into cancer, and it can also detect cancer early when treatment is most effective.
Key Statistics
- Regular screening reduces colorectal cancer deaths by up to 68%
- When detected early, the 5-year survival rate is about 90%
- Most insurance plans cover colorectal cancer screening with no out-of-pocket costs
- Screening rates have increased, but millions of eligible adults remain unscreened
Who Should Get Screened?
Standard Risk Adults
Major medical organizations recommend that adults at average risk begin regular colorectal cancer screening at age 45. You're considered at average risk if you don't have:
- A personal history of colorectal cancer or certain types of polyps
- A family history of colorectal cancer
- A personal history of inflammatory bowel disease
- A confirmed or suspected hereditary colorectal cancer syndrome
- A personal history of radiation to the abdomen or pelvic area to treat a prior cancer
Higher Risk Individuals
If you have any of the risk factors listed above, you may need to start screening earlier, be screened more often, or receive specific tests. Talk with your healthcare provider about your personal risk factors and the screening schedule that's right for you.
Colorectal Cancer Screening Options
There are several effective screening tests available. The best test is the one that gets done. Talk with your healthcare provider about which option works best for you.
Colonoscopy
Frequency: Every 10 years (if no abnormalities found)
How it works: A flexible tube with a camera examines your entire colon. If polyps are found, they can often be removed during the procedure.
Preparation: Requires bowel preparation the day before and sedation during the procedure.
Benefits: Most comprehensive test; allows for polyp removal during the exam; long interval between screenings if results are normal.
Stool-Based Tests
Frequency: Annually for FIT; every 1-3 years for FIT-DNA test
How it works: These tests check for hidden blood or DNA markers in stool samples that you collect at home.
Types:
- Fecal Immunochemical Test (FIT): Detects hidden blood
- FIT-DNA test: Detects both blood and DNA changes
Benefits: Done at home; no bowel preparation; non-invasive.
Important note: If results are abnormal, a colonoscopy is needed for follow-up.
Flexible Sigmoidoscopy
Frequency: Every 5 years, or every 10 years with annual FIT
How it works: Examines the lower part of the colon using a flexible tube with a camera.
Preparation: Requires limited bowel preparation; usually doesn't require sedation.
Benefits: Less preparation than colonoscopy; can often be done without sedation.
CT Colonography (Virtual Colonoscopy)
Frequency: Every 5 years
How it works: Uses CT scans to create detailed images of your colon.
Preparation: Requires bowel preparation; no sedation needed.
Benefits: Less invasive than traditional colonoscopy; no sedation required.
Important note: If abnormalities are found, a colonoscopy will be needed.
Preparing for Your Screening
Before the Test
- Discuss with your doctor: Review your medical history, risk factors, and which test is best for you
- Check insurance coverage: Most plans cover screening tests with no cost-sharing under the Affordable Care Act
- Follow preparation instructions: Proper bowel preparation is essential for accurate results
- Arrange transportation: If you're having a colonoscopy with sedation, plan for someone to drive you home
During the Test
What happens during your screening depends on which test you choose. Your healthcare team will explain the process and answer any questions. For procedures like colonoscopy, you'll receive medication to keep you comfortable.
After the Test
- Your doctor will discuss the results with you
- If polyps were found and removed, they'll be tested
- You'll receive recommendations for follow-up screening
- Most people return to normal activities quickly
Understanding Your Results
Normal Results
If no polyps or abnormalities are found, you'll follow the regular screening schedule for your chosen test. Continue getting screened as recommended.
Abnormal Results
Abnormal results don't necessarily mean you have cancer. Many findings are benign polyps that can be removed. Your doctor will discuss next steps, which may include:
- Additional testing or procedures
- Polyp removal (if not already done)
- More frequent screening
- Referral to a specialist
Addressing Common Concerns
Cost and Insurance Coverage
The Affordable Care Act requires most insurance plans to cover colorectal cancer screening tests with no out-of-pocket costs when performed according to recommended guidelines. Medicare also covers screening tests. Check with your insurance provider about your specific coverage.
Fear of the Procedure
It's natural to feel anxious about screening. Remember that:
- Sedation makes colonoscopy comfortable for most people
- The procedure itself is relatively quick
- Healthcare providers perform these tests routinely
- Early detection significantly improves outcomes
- Home-based stool tests are available if you prefer
Preparation Concerns
While bowel preparation can be uncomfortable, it's temporary and essential for accurate results. Your healthcare team can provide tips to make the process easier and may offer different preparation options.
Reducing Your Risk
While screening is crucial, you can also take steps to reduce your colorectal cancer risk:
- Maintain a healthy weight: Obesity increases colorectal cancer risk
- Stay physically active: Regular exercise is protective
- Eat a healthy diet: Focus on fruits, vegetables, and whole grains; limit red and processed meats
- Limit alcohol: Excessive alcohol consumption increases risk
- Don't smoke: Smoking is linked to increased colorectal cancer risk
- Consider aspirin: For some people, daily aspirin may reduce risk (discuss with your doctor)
Take Action Today
Don't wait to schedule your colorectal cancer screening. If you're 45 or older and haven't been screened, or if it's time for your next screening, contact your healthcare provider to discuss your options.
Remember: The best screening test is the one that gets done.
Talk to Your DoctorQuestions to Ask Your Healthcare Provider
- Based on my age and risk factors, when should I start screening?
- Which screening test do you recommend for me and why?
- How do I prepare for the test?
- What happens if the test finds something abnormal?
- When will I get my results?
- How often should I be screened?
- Will my insurance cover the screening?
- Are there any risks I should know about?
Important Reminder
This guide provides general information about colorectal cancer screening. Always consult with your healthcare provider about your individual situation, risk factors, and the screening approach that's right for you. Don't delay getting screened due to fear or uncertainty—early detection saves lives.
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