Monday 15 March 2004
Normally,the dynamic process of cell division is balanced by exfoliation from the luminal surface. If an imbalance occurs, either because of increased replication or decreased exfoliation, a polyp results.
Broadly speaking, the word "polyp" simply denotes any mucosal elevation.
Polyps may consist of benign or malignant epithelial proliferations, inﬂammatory inﬁltrates localized in the lamina propria, or deeper, submucosalor intramural mesenchymal proliferations, malformations, or even metastatic tumors.
The three most common colorectal polyps are inﬂammatory, hyperplastic, and adenomatous.
- colonic tubular adenoma
- colonic villous adenoma
colorectal hyperplastic polyp
colorectal juvenile polyp
colorectal Peutz-Jeghers polyp
colonic mixed hyperplastic adenomatous polyp
colonic inflammatory pseudopolyp
colonic lymphoid polyp
colonic lipomatous polyp