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Summary
A polyp is an extra piece of tissue that grows inside your body. Colonic polyps grow in the large intestine, or colon. Most polyps are not dangerous. However, some polyps may turn into cancer or already be cancer. To be safe, doctors remove polyps and test them. Polyps can be removed when a doctor examines the inside of the large intestine during a colonoscopy.
Anyone can get polyps, but certain people are more likely than others. You may have a greater chance of getting polyps if you :
- Are over age 50
- Have had polyps before
- Have a family member with polyps
- Have a family history of colon cancer
Most colon polyps do not cause symptoms. If you have symptoms, they may include blood on your underwear or on toilet paper after a bowel movement, blood in your stool, or constipation or diarrhea lasting more than a week.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
Diagnosis and Tests
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Colonoscopy: MedlinePlus Health Topic
(National Library of Medicine)
Also in Spanish
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Lower GI Series (Barium Enema)
(National Institute of Diabetes and Digestive and Kidney Diseases)
Also in Spanish
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Screening Tests to Detect Colorectal Cancer and Polyps
(National Cancer Institute)
Also in Spanish
- What to Know If Polyps Were Found during Your Colonoscopy (American Cancer Society)
- When You Visit Your Doctor -- Colonic Polyps (Harvard Medical School)
- Your Colon or Rectal Pathology Report: Polyps (Including Serrated Adenomas) (American Cancer Society)
Prevention and Risk Factors
- Can Colorectal Polyps and Cancer Be Found Early? (American Cancer Society) Also in Spanish
Treatments and Therapies
- Large bowel resection - Series (Medical Encyclopedia) Also in Spanish
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Treatment for Colon Polyps
(National Institute of Diabetes and Digestive and Kidney Diseases)
Also in Spanish
Genetics
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Familial adenomatous polyposis: MedlinePlus Genetics
(National Library of Medicine)
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Juvenile polyposis syndrome: MedlinePlus Genetics
(National Library of Medicine)
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Peutz-Jeghers syndrome: MedlinePlus Genetics
(National Library of Medicine)
Clinical Trials
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ClinicalTrials.gov: Colonic Polyps
(National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Stage-Aware Swin-Enhanced nnU-Net v2 for Robust Polyp Segmentation in Collaborative Endoscopic...
- Article: Expression Analysis of PVT-1 lncRNA and TGF-β in Colorectal Cancer and...
- Article: Comparative Performance of Image-Enhanced Endoscopy for Adenoma and Sessile Serrated Lesion...
- Colonic Polyps -- see more articles
Find an Expert
- American Cancer Society
- ASGE: Find a Doctor (American Society for Gastrointestinal Endoscopy)
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National Institute of Diabetes and Digestive and Kidney Diseases
Children
- Gastrointestinal Polyps (North American Society for Pediatric Gastroenterology, Hepatology and Nutrition) Also in Spanish
Patient Handouts
- Colonoscopy (Medical Encyclopedia) Also in Spanish
- Colorectal polyps (Medical Encyclopedia) Also in Spanish
- Large bowel resection (Medical Encyclopedia) Also in Spanish
- Polyp biopsy (Medical Encyclopedia) Also in Spanish