Colorectal adenoma

The colorectal adenoma is a benign glandular tumor of the colon and the rectum. It is a precursor lesion of the colorectal adenocarcinoma (colon cancer).^[1]^[2]^[3]

Some morphological variants have been described:

References

↑ Hardcastle, J. D.; Armitage, N. C. (1984). "Early diagnosis of colorectal cancer: A review". Journal of the Royal Society of Medicine 77 (8): 673–6. PMC 1440108. PMID 6384511.
↑ Schofield, P. F.; Jones, D. J. (1992). "ABC of colorectal diseases. Colorectal neoplasia--I: Benign colonic tumours". BMJ (Clinical research ed.) 304 (6840): 1498–500. doi:10.1136/bmj.304.6840.1498. PMC 1882234. PMID 1319254.
↑ Srivastava, S; Verma, M; Henson, D. E. (2001). "Biomarkers for early detection of colon cancer". Clinical cancer research : an official journal of the American Association for Cancer Research 7 (5): 1118–26. PMID 11350874.
↑ Rosty, C; Hewett, D. G.; Brown, I. S.; Leggett, B. A.; Whitehall, V. L. (2013). "Serrated polyps of the large intestine: Current understanding of diagnosis, pathogenesis, and clinical management". Journal of Gastroenterology 48 (3): 287–302. doi:10.1007/s00535-012-0720-y. PMC 3698429. PMID 23208018.

Digestive system neoplasia (C15–C26/D12–D13, 150–159/211)

GI tract

Upper

Esophagus	Squamous cell carcinoma Adenocarcinoma

Stomach	Gastric carcinoma Signet ring cell carcinoma Gastric lymphoma MALT lymphoma Linitis plastica

Lower

Small intestine	Duodenal cancer Adenocarcinoma

Appendix	Carcinoid Pseudomyxoma peritonei

Colon/rectum	colorectal polyp: Peutz–Jeghers syndrome Juvenile polyposis syndrome Familial adenomatous polyposis/Gardner's syndrome Cronkhite–Canada syndrome neoplasm: Adenocarcinoma Familial adenomatous polyposis Hereditary nonpolyposis colorectal cancer

Anus	Squamous cell carcinoma

Upper and/or lower

Accessory

Liver	malignant: Hepatocellular carcinoma Fibrolamellar Hepatoblastoma benign: Hepatocellular adenoma Cavernous hemangioma hyperplasia: Focal nodular hyperplasia Nodular regenerative hyperplasia

Biliary tract	bile duct: Cholangiocarcinoma Klatskin tumor gallbladder: Gallbladder cancer

Pancreas	exocrine pancreas: Adenocarcinoma Pancreatic ductal carcinoma cystic neoplasms: Serous microcystic adenoma Intraductal papillary mucinous neoplasm Mucinous cystic neoplasm Solid pseudopapillary neoplasm Pancreatoblastoma

Peritoneum

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