Colorectal polyps and their relationship to cancer

E. C. Kim, P. Lance

Research output: Contribution to journalArticlepeer-review

70 Scopus citations


Autosomal dominant, familial forms of colorectal adenocarcinoma are recognized, but more than 90% of cases are sporadic. Most familial and sporadic cases arise through malignant transformation of benign adenomas in a process known as the adenoma-to-carcinoma sequence. Adenomas are classified histologically as tubular, tubulovillous, or villous. As a neoplasm, adenomas all manifest mild, moderate, or severe dysplasia. The majority (> 90%) of adenomas are small. (< 1 cm in diameter) and do not progress. Risk factors for carcinomatous progression include the presence of multiple adenomas, size greater than or equal to 1 cm, and villous histology or severe dysplasia in adenomas of any size. The adenoma-to-carcinoma sequence advances through the accumulation of lesions involving multiple genes. It appears that similar molecular genetic mechanisms are involved in familial and sporadic forms of colorectal neoplasia.

Original languageEnglish (US)
Pages (from-to)1-17
Number of pages17
JournalGastroenterology Clinics of North America
Issue number1
StatePublished - 1997

ASJC Scopus subject areas

  • Gastroenterology


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