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colorectal polyp

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.

Classification

- colorectal adenomas

  • 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
- colonic neurofibromatosis

See also

- colorectal lesions
- colorectal tumors

Portfolio

  • Colorectal tubulous adenoma
  • Colonic juvenile polyp
  • Colonic juvenile polyp
  • Colonic Peutz-Jeghers polyp
  • Colonic Peutz-Jeghers polyp
  • Colonic juvenile polyp
  • Colonic juvenile polyp