Introduction
Colon polyps are small clumps of cells that form on the lining of the colon or rectum. Most are entirely harmless, but a specific type — adenomatous polyps — can, over years, develop into colorectal cancer through a well-understood progression called the adenoma-carcinoma pathway. This is exactly why colonoscopy, with removal of any polyps found during the same procedure, is one of the most effective cancer-prevention tools in medicine. At KAGE, polyps are not just removed but properly characterized, since the type and features found determine how soon a follow-up colonoscopy is needed.
How common are colon polyps in South India
A study conducted in South India found polyps in 11% of all colonoscopy patients overall, rising to 14.7% in patients over age 40 — in practical terms, roughly 1 in 6 people over 40 in this population had a polyp, with the risk of adenomas specifically increasing fivefold above that age. Of the polyps found, 41.8% were adenomatous (the type with cancer potential) and 45.8% of those adenomas were classified as 'advanced,' a higher-risk category. Perhaps most striking: 12.7% of colorectal cancers in this South Indian population were diagnosed in patients under age 40 — well below the age most international screening guidelines are built around. This mirrors a global trend of rising early-onset colorectal cancer (diagnosed before age 50), which has prompted many countries to lower their recommended screening starting age from 50 to 45. Population-wide screening colonoscopy is not yet standard practice across India, which makes individual awareness and proactive screening especially relevant here.
Types of colon polyps
| Type | Cancer potential | Notes |
|---|---|---|
| Adenomatous (adenoma) | Yes — the main precursor to colorectal cancer | Made up roughly 42% of polyps found in South Indian screening data |
| Hyperplastic | Generally minimal to none | The single most common polyp type found overall |
| Serrated | Yes, via a distinct pathway increasingly recognized in recent years | Can be harder to detect than adenomas and needs careful examination |
| Inflammatory / hamartomatous | Usually low, context-dependent | Less common; often related to an underlying inflammatory condition |
Symptoms of colon polyps
Most colon polyps cause no symptoms at all, which is the central reason screening — not waiting for symptoms — is the right approach. When symptoms do occur, particularly with larger polyps, they can include:
- Rectal bleeding or blood in the stool
- A change in bowel habits
- Iron-deficiency anemia from slow, unnoticed blood loss
- Abdominal pain, uncommonly, with very large polyps
Who should be screened
- Average-risk adults from age 45, per current international guidelines, which have been lowered from 50 in response to rising early-onset colorectal cancer
- Earlier screening for anyone with a first-degree relative with colorectal cancer or advanced polyps
- Earlier evaluation for anyone with red-flag symptoms — rectal bleeding, unexplained weight loss, or unexplained anemia — regardless of age
- Individuals with inflammatory bowel disease or certain hereditary syndromes generally need an individualized, often earlier, screening schedule
How polyps are found and removed
- Colonoscopy — the standard method for both detecting polyps and removing them in the same session (polypectomy)
- Removed polyps are sent for histopathology to determine their exact type and any high-risk features
- Larger or more complex polyps occasionally require specialized techniques such as endoscopic mucosal resection
After a polyp is removed: surveillance matched to findings
What's found during your colonoscopy — not simply 'a polyp was removed' — determines your follow-up schedule:
- No polyps, or only small hyperplastic polyps: typically a 10-year interval before the next colonoscopy, the same as average-risk screening
- 1–2 small, low-risk adenomas: usually a 7–10 year interval
- Multiple adenomas, larger adenomas, or advanced/high-risk features: a shorter interval, often 3 years, sometimes sooner
- Serrated polyps: interval depends on size, number, and location, assessed individually
Living with a history of colon polyps
Having had adenomas, especially advanced or multiple ones, means your future screening schedule will be more frequent than the standard 10-year interval — this isn't cause for alarm, it's the surveillance system working as intended. It's also worth telling first-degree relatives, since a family history of adenomas or colorectal cancer is itself a reason for them to consider earlier or more frequent screening.
Colon polyp care at KAGE
Most colon polyps are removed during the same colonoscopy that finds them. Larger, flat, or scarred lesions that a standard snare cannot take safely are removed by EMR, or with FTRD where the lesion involves the full thickness of the bowel wall — both performed by our gastroenterologists rather than referred on for bowel resection. The same organ-preserving principle applies to early gastric cancer. If you are due for screening, or have had polyps removed before, book a consultation.
Frequently asked questions
Current guidelines recommend average-risk screening starting at age 45, lowered from 50 due to rising rates of colorectal cancer in younger adults — including in South Indian data specifically.
No — polypectomy is performed during the same sedated colonoscopy procedure and isn't separately painful.
This depends entirely on what was found — the number, size, and type of polyp. It can range from 3 to 10 years; your gastroenterologist will set the specific interval based on your results.
Screening colonoscopy is often covered under health insurance, particularly for those meeting age or risk-based criteria; our team can help verify your specific coverage during consultation.
New polyps can form over time even after previous ones are removed, which is exactly why ongoing surveillance at the recommended interval matters, rather than considering the issue permanently resolved after one clear colonoscopy.
Yes — a first-degree relative with colorectal cancer or advanced polyps is a recognized reason to start screening earlier than the standard age, and your gastroenterologist can advise on the right starting point.
Yes — and this is an area of real, documented concern in South Indian data specifically, where a meaningful share of colorectal cancers were found in patients under 40. Rectal bleeding or unexplained anemia at any age deserves evaluation.
A polyp is a growth that, in some types, can develop into cancer over years if not removed. Removing polyps during colonoscopy, before that progression happens, is precisely how colonoscopy prevents cancer rather than just detecting it.
Most polypectomies involve minimal recovery, similar to a standard colonoscopy; your care team will give specific guidance if a larger or more complex polyp was removed.
It's uncommon and usually linked to a specific hereditary condition when it occurs. Pediatric cases are evaluated by KAGE's pediatric gastroenterology team.
Book a consultation at KAGE
Speak to a KAGE gastroenterologist about your symptoms, your diagnosis, or a second opinion.