Overview
Adenomas can become cancer over years.
Removing polyps prevents colon cancer.
Symptoms
Common signs:
- Colon polyps, a rectal lump, or blood mixed into the stool
Less common
- Usually no symptoms
- Change in bowel habits
When to get medical care
Call 911Heavy rectal bleeding or fainting.
Get care todayBlood in stool or black stools.
See a doctor soonScreening due, or a family history.
Does it spread or run in families?
- It isn't contagious. You can't catch it from someone else.
- It can run in families. Tell your doctor if a parent, brother, or sister has it.
Who is more likely to get it
- Age over 45
- Family history
Possible complications
Diagnosis
Found during screening.
Tests
Tests, if needed:
- Colonoscopy: Finds and removes polyps.
Treatment
Removal is the treatment.
Self-care
- Get screened starting at 45
- Eat fiber
- Don't smoke
Prevention
To lower risk:
- Screening
- Fiber
Which doctor treats this
- Start with your primary care provider (family doctor or internist).
- They may send you to a gastroenterologist (stomach and gut doctor).
Children, pregnancy, and older adults
- People with family history: Earlier screening.
Pregnancy and breastfeeding
- If you're pregnant or planning to be, tell your prenatal provider about this condition.
- Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
- Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
- Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.
Outlook
Removing polyps prevents cancer.
Removing polyps lowers colon cancer risk.
Getting ready for your visit
Bring a list of your symptoms and medicines.
Questions to ask
- When is my next colonoscopy?
- What type of polyp did I have?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Sources
Last updated 2026-11-12.