Multimedia
![]() | Media file 1: Endoscopic view of a sessile polyp, which histology studies revealed to be a villous adenoma. Courtesy of H. Chaun, MD. |
![]() | Media file 2: Endoscopic view of a sessile polyp histologically determined to be a villous adenoma. Courtesy of R. Enns, MD. |
![]() | Media file 3: Endoscopic view of injection of saline into the base of a sessile polyp histologically determined to be a villous adenoma. This enables an easier polypectomy. Courtesy of R. Enns, MD. |
![]() | Media file 4: Polypectomy with a snare around a sessile polyp base (villous adenoma) injected with saline. Courtesy of R. Enns, MD. |
![]() | Media file 5: Histology of villous adenoma. Fingerlike projections stretching from the surface of a polyp downward with minimal branching. Courtesy of D. Owen, MD. |
![]() | Media file 6: Histology of villous adenoma. Low-grade dysplasia with loss of mucin, prominent nucleoli, and hyperchromatic and elongated cells. Courtesy of D. Owen, MD. |
More on Villous Adenoma |
| Overview: Villous Adenoma |
| Differential Diagnoses & Workup: Villous Adenoma |
| Treatment & Medication: Villous Adenoma |
| Follow-up: Villous Adenoma |
Multimedia: Villous Adenoma |
| References |
| Further Reading |
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References
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Further Reading
Clinical guidelines
Guidelines for colonoscopy surveillance after polypectomy: A consensus update by the US Multi-Society Task Force on Colorectal Cancer and the American Cancer Society.
American Cancer Society - Disease Specific Society
American Gastroenterological Association Institute - Medical Specialty Society. 2006 May. 17 pages. NGC:006080
Surveillance and management of groups at increased risk of colorectal cancer.
New Zealand Guidelines Group - Private Nonprofit Organization. 2004 May. 84 pages. NGC:003655
Quality indicators for colonoscopy.
American College of Gastroenterology - Medical Specialty Society
American Society for Gastrointestinal Endoscopy - Medical Specialty Society. 2006 Apr. 13 pages. NGC:004969
Colorectal cancer screening.
Institute for Clinical Systems Improvement - Private Nonprofit Organization. 1995 May (revised 2008 Jun). 27 pages. NGC:006580
Routine aspirin and non-steroidal anti-inflammatory drug (NSAID) prophylaxis for colorectal cancer prevention.
United States Preventive Services Task Force - Independent Expert Panel. 2007 Mar. 5 pages. NGC:005452
Clinical trials
Randomised Trial of NBI for Adenoma Detection
Selenium in Treating Patients With Adenomatous Colorectal Polyps
A Prospective, Single Blinded Study for Predicting Colon Polyp Histology With Narrow Band Imaging (NBI)
Chemoprevention of Colorectal Adenomas
Prevention of Progression of Duodenal Adenomas in Patients With Familial Adenomatous Polyposis (PreDuoFAP)
Related eMedicine topics
Pancreas, Mucinous Cystic Neoplasm
Papillary Tumors
Neoplasms of the Endocrine Pancreas
Colon, Polyps
Hereditary Colorectal Cancer
Colon Cancer, Adenocarcinoma
Keywords
villous adenoma, tubulovillous adenoma, adenomatous polyps, colonic tumor, colonic neoplasm, papillary adenoma, malignancy, tubular adenoma, tubulovillous adenoma, tubulo-villous adenoma, colonoscopy, adenocarcinomas, rectal cancer, colon cancer, colonic villous adenomas












Multimedia: Villous Adenoma