Template:Pie chart of colorectal polyp etiologies - Source

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References

Relative incidences:

(2017). "Epidemiological aspects of endoscopic resections of colorectal polyps in patients at an endoscopy training center in the Santos region, Brasil". Rev Gastroenterol Peru 37 (1): 47–52. PMID 28489836.

Malignancy risks:

Tubular adenoma: 2% at 1.5cm - Minhhuyen Nguyen. Polyps of the Colon and Rectum. MSD Manual. Last full review/revision June 2019
Tubulovillous adenoma: 20% to 25% - (2005). "Colorectal Cancer: Epidemiology, Risk Factors, and Health Services". Clinics in Colon and Rectal Surgery 18 (03): 133–140. DOI:10.1055/s-2005-916274. ISSN 1531-0043.
Villous adenoma:

15% - Alnoor Ramji. Villous Adenoma Follow-up. Medscape. Updated: Oct 24, 2016</ref>
40% - (2005). "Colorectal Cancer: Epidemiology, Risk Factors, and Health Services". Clinics in Colon and Rectal Surgery 18 (03): 133–140. DOI:10.1055/s-2005-916274. ISSN 1531-0043.

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