What Are Colon Polyps? What Patients Should Know

Colon polyps are growths in the lining of the colon

A colon polyp is a growth that forms on the inner lining of the colon or rectum. The colon is the large intestine, and the rectum is the final portion before a bowel movement. Polyps are common, particularly as people get older, and many are found during a colonoscopy performed for screening or for another clinical reason.

Finding a polyp does not mean a person has cancer. Many polyps are harmless, and a person usually cannot tell that one is present. Still, some types can change over time. That is why clinicians pay attention to them, may remove them when it is appropriate, and use the pathology results and other details to guide follow-up.

This article provides general education. It cannot determine whether a particular growth is a polyp, what type it is, or what a result means for an individual. Those answers depend on the procedure findings, laboratory review, medical history, and a conversation with the care team.

Not all polyps are alike

Polyps can differ in their size, shape, location, and cell pattern. Some are small and attached to the lining by a stalk; others are flatter and broader. A clinician may describe what was seen during the procedure, but the laboratory examination of removed tissue is often what helps identify the polyp type.

Broadly, some polyps are considered less likely to become cancerous, while others are called precancerous because they may have the potential to develop into cancer over a long period if left in place. Terms such as adenoma, serrated polyp, or hyperplastic polyp may appear in a report. These words have specific medical meanings, so it is best to ask the clinician how they apply to your result rather than trying to interpret a report in isolation.

Risk is not determined by type alone. The number of polyps, their size, their microscopic features, whether they were completely removed, the quality of the examination, and a person’s own and family history can all matter. This is why two people who both hear “polyp” may receive different follow-up recommendations.

Are colon polyps cancer?

Most colon polyps are not cancer. Some can be precancerous, meaning they may be capable of changing into cancer over time. Removing certain polyps is one way clinicians can reduce that future risk. The presence of a polyp does not tell anyone that cancer is already present, and it should not be treated as a diagnosis without the full clinical information.

Colon cancer can also occur without a person ever noticing a polyp. Screening and diagnostic testing are used for different reasons, and the appropriate approach depends on age, symptoms, health history, prior results, and family history. A clinician can explain how a polyp finding fits into the larger plan for colorectal health.

If a pathology report identifies a concerning feature, the care team can explain what was found, whether any further evaluation is needed, and when follow-up should occur. Asking for the report and a plain-language explanation can help make the next steps clearer.

Colon polyp symptoms are often absent

Most polyps do not cause symptoms. That is one reason they may be discovered during a colonoscopy even when someone feels well. When symptoms do occur, they can overlap with many other digestive conditions and do not confirm that a polyp is the cause.

Possible symptoms to discuss with a medical professional include blood in or on the stool, a persistent change in bowel habits, unexplained iron-deficiency anemia, ongoing abdominal discomfort, or unexplained weight loss. The color and amount of blood, the duration of symptoms, medicines, and other health conditions all help shape the evaluation. Do not assume bleeding is from a polyp or from a familiar condition such as hemorrhoids without discussing it.

Seek emergency care for heavy rectal bleeding, black or tar-like stools with weakness or dizziness, fainting, severe or worsening abdominal pain, vomiting blood, or symptoms that feel life-threatening. Emergency symptoms should not wait for a routine office inquiry.

How polyps may be found

Polyps are often found during a colonoscopy. During this procedure, a clinician uses a flexible instrument with a camera to examine the inside of the colon. Colonoscopy may be discussed for screening, for symptoms, for follow-up of a prior finding, or for other individualized reasons. It is not automatically needed for every bowel symptom or every person.

Other colorectal screening tests can be useful in appropriate circumstances. If one of those tests is abnormal, a colonoscopy may be recommended to examine the colon directly. The reason for testing matters, so a clinician can help explain what a particular result does and does not show.

A thorough preparation is important for a colonoscopy because the lining needs to be visible. Your care team will give procedure-specific instructions if colonoscopy is planned. Use those instructions rather than general advice online, since preparation, medicines, diet changes, transportation, and timing may need to be tailored to your situation.

What happens when a polyp is removed

When a polyp is found during colonoscopy, it may be possible to remove it during the same procedure. This is commonly called a polypectomy. The method can vary with the polyp’s size, shape, and location. In some situations, removal may be deferred or a different approach may be discussed. The clinician can explain what was done and why.

Removed tissue is generally sent to a laboratory for examination under a microscope. That review helps answer important questions, including the type of polyp and whether its features affect the recommended follow-up. Procedure findings and pathology results may be available at different times, so it can be helpful to ask how and when results will be communicated.

After a procedure, follow the recovery and discharge instructions you were given. Contact the care team promptly if you are told to report a symptom or if you have concerns about your recovery. For severe abdominal pain, persistent vomiting, fever, heavy bleeding, fainting, or other urgent symptoms after a procedure, seek immediate medical attention.

Why follow-up intervals vary

It is natural to want a single answer to the question, “When is my next colonoscopy?” There is not one interval that fits everyone. Follow-up recommendations can depend on how many polyps were found, their type and size, whether they were removed, the quality of the bowel preparation, the completeness of the exam, and past personal or family history.

People who have had polyps should not rely on a calendar estimate from a friend, family member, or general article. Keep a copy of the procedure and pathology information if it is provided, and ask the care team what follow-up they recommend. If you move or change clinicians, those records can make it easier for the new team to understand your history.

A recommendation can also change when new information becomes available. Tell your clinician about relatives with colorectal cancer or certain polyps, especially if diagnoses occurred at younger ages, and report any new symptoms rather than waiting until a planned surveillance date.

A measured next step after a polyp finding

Learning that a polyp was found can be unsettling, but it is also information that can guide prevention and follow-up. The most useful next step is usually to understand the result in context rather than to assume the worst. Ask what was found, whether it was removed, when pathology results will be ready, and what follow-up is recommended for you.

Arrowhead Gastroenterology Associates lists colonoscopy among its published patient services. To review the practice’s published areas of care, visit Patient Services. For office contact information and hours, use the Contact & Hours page. Information about what a colonoscopy visit may involve is also available in What to Expect During a Colonoscopy.

Frequently asked questions

Can a colon polyp cause symptoms?

Many colon polyps cause no symptoms. Bleeding, bowel changes, anemia, abdominal discomfort, and weight loss can have many causes, so they should be discussed with a clinician rather than assumed to be from a polyp.

Does removing a polyp mean I will not need follow-up?

Not necessarily. Follow-up depends on the type, number, size, and features of polyps, as well as the quality and findings of the examination and your history. Ask your care team for the interval recommended for you.

Can polyps come back after removal?

A removed polyp does not grow back in the same place, but new polyps can develop elsewhere over time. This is one reason follow-up recommendations are individualized.

Should my family members be told if I have a polyp?

It can be helpful to share relevant results, especially if a clinician says your finding affects family history. Ask the care team whether relatives should discuss their own screening plan with a clinician.

What if I have rectal bleeding or severe abdominal pain?

Contact a medical professional promptly for bleeding or new concerning symptoms. Seek emergency care for heavy bleeding, fainting, severe or worsening pain, black stools with weakness or dizziness, or other symptoms that feel life-threatening.