Adenomatous polyp that contains predominantly villous ("shaggy" surface) elements
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Bains L et al: Giant villous adenoma of rectum- what is the malignant potential and what is the optimal treatment? A case and review of literature. World J Surg Oncol. 17(1):109, 2019
Click B et al: Association of colonoscopy adenoma findings with long-term colorectal cancer incidence. JAMA. 319(19):2021-31, 2018
Lubner MG et al: Villous gastrointestinal tumors: multimodality imaging with histopathologic correlation. Radiographics. 38(5):1370-84, 2018
Turner KO et al: Lesions of all types exist in colon polyps of all sizes. Am J Gastroenterol. 113(2):303-6, 2018
Jasperson KW et al: APC-associated polyposis conditions. In: GeneReviews® [Internet]. University of Washington, Seattle; 1993–2021
Serra-Aracil X et al: Transanal endoscopic surgery with total wall excision is required with rectal adenomas due to the high frequency of adenocarcinoma. Dis Colon Rectum. 57(7):823-9, 2014
Bozkurt N et al: Adenoma with rectal villous diarrhoea and severe hypokalaemia (McKittrick-Wheelock syndrome). Br J Hosp Med (Lond). 74(11):648-9, 2013
Sanchez Garcia S et al: Hypersecretory villous adenoma as the primary cause of an intestinal intussusception and McKittrick-Wheelock syndrome. Can J Gastroenterol. 27(11):621-2, 2013
Sosna J et al: Critical analysis of the performance of double-contrast barium enema for detecting colorectal polyps > or = 6 mm in the era of CT colonography. AJR Am J Roentgenol. 190(2):374-85, 2008
Ferrucci JT: Double-contrast barium enema: use in practice and implications for CT colonography. AJR Am J Roentgenol. 187(1):170-3, 2006
Taylor SA et al: Comparison of radiologists' confidence in excluding significant colorectal neoplasia with multidetector-row CT colonography compared with double contrast barium enema. Br J Radiol. 79(939):208-15, 2006
Johnson CD et al: Comparison of the relative sensitivity of CT colonography and double-contrast barium enema for screen detection of colorectal polyps. Clin Gastroenterol Hepatol. 2(4):314-21, 2004
Smith TR et al: CT appearance of some colonic villous tumors. AJR Am J Roentgenol. 177(1):91-3, 2001
Chung JJ et al: Large villous adenoma in rectum mimicking cerebral hemispheres. AJR Am J Roentgenol. 175(5):1465-6, 2000
Cunnane ME et al: Small flat umbilicated tumors of the colon: radiographic and pathologic findings. AJR Am J Roentgenol. 175(3):747-9, 2000
Levine MS et al: Diagnosis of colorectal neoplasms at double-contrast barium enema examination. Radiology. 216(1):11-8, 2000
Iida M et al: Endoscopic features of villous tumors of the colon: correlation with histological findings. Hepatogastroenterology. 37(3):342-4, 1990
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
TERMINOLOGY
Synonyms
Villous tumor
Definitions
Adenomatous polyp that contains predominantly villous ("shaggy" surface) elements
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Bains L et al: Giant villous adenoma of rectum- what is the malignant potential and what is the optimal treatment? A case and review of literature. World J Surg Oncol. 17(1):109, 2019
Click B et al: Association of colonoscopy adenoma findings with long-term colorectal cancer incidence. JAMA. 319(19):2021-31, 2018
Lubner MG et al: Villous gastrointestinal tumors: multimodality imaging with histopathologic correlation. Radiographics. 38(5):1370-84, 2018
Turner KO et al: Lesions of all types exist in colon polyps of all sizes. Am J Gastroenterol. 113(2):303-6, 2018
Jasperson KW et al: APC-associated polyposis conditions. In: GeneReviews® [Internet]. University of Washington, Seattle; 1993–2021
Serra-Aracil X et al: Transanal endoscopic surgery with total wall excision is required with rectal adenomas due to the high frequency of adenocarcinoma. Dis Colon Rectum. 57(7):823-9, 2014
Bozkurt N et al: Adenoma with rectal villous diarrhoea and severe hypokalaemia (McKittrick-Wheelock syndrome). Br J Hosp Med (Lond). 74(11):648-9, 2013
Sanchez Garcia S et al: Hypersecretory villous adenoma as the primary cause of an intestinal intussusception and McKittrick-Wheelock syndrome. Can J Gastroenterol. 27(11):621-2, 2013
Sosna J et al: Critical analysis of the performance of double-contrast barium enema for detecting colorectal polyps > or = 6 mm in the era of CT colonography. AJR Am J Roentgenol. 190(2):374-85, 2008
Ferrucci JT: Double-contrast barium enema: use in practice and implications for CT colonography. AJR Am J Roentgenol. 187(1):170-3, 2006
Taylor SA et al: Comparison of radiologists' confidence in excluding significant colorectal neoplasia with multidetector-row CT colonography compared with double contrast barium enema. Br J Radiol. 79(939):208-15, 2006
Johnson CD et al: Comparison of the relative sensitivity of CT colonography and double-contrast barium enema for screen detection of colorectal polyps. Clin Gastroenterol Hepatol. 2(4):314-21, 2004
Smith TR et al: CT appearance of some colonic villous tumors. AJR Am J Roentgenol. 177(1):91-3, 2001
Chung JJ et al: Large villous adenoma in rectum mimicking cerebral hemispheres. AJR Am J Roentgenol. 175(5):1465-6, 2000
Cunnane ME et al: Small flat umbilicated tumors of the colon: radiographic and pathologic findings. AJR Am J Roentgenol. 175(3):747-9, 2000
Levine MS et al: Diagnosis of colorectal neoplasms at double-contrast barium enema examination. Radiology. 216(1):11-8, 2000
Iida M et al: Endoscopic features of villous tumors of the colon: correlation with histological findings. Hepatogastroenterology. 37(3):342-4, 1990
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