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Colorectal polyps

Identifying and definitional attributes

Metadata item type:Help on this termGlossary Item
METeOR identifier:Help on this term564110
Registration status:Help on this termHealth, Standard 29/08/2014
Definition:Help on this term

Small growths of colon tissue that protrude into the colonic or rectal lumen. They are usually asymptomatic, but sometimes cause visible rectal bleeding, and, rarely, other symptoms. Polyps may occur individually but it is common for a person to have multiple polyps. They occur more commonly in later life, and hereditary and dietary (lifestyle) factors may play a part.

Polyps may become cancerous and are generally defined as 2 main types:

  • hyperplastic: a type of polyp that has a low risk, if any, of developing into a cancer. However, people with multiple hyperplastic polyps are associated with an increased risk of bowel cancer.
  • adenoma (adenomatous): a polyp that has a higher chance of becoming cancerous, as it contains molecular characteristics that are common with adenocarcinoma.

Polyp number, size and microscopic features may also predict the likelihood of a polyp becoming cancerous, with larger and flatter (non-stalked) polyps having the higher risk. During a colonoscopy polyps are removed, thus lowering the risk of bowel cancer developing in the person.

Source and reference attributes

Reference documents:Help on this term

Australian Institute of Health and Welfare 2013. National Bowel Cancer Screening Program monitoring report: July 2011–June 2012. Cancer series no. 75. Cat. no. CAN 71. Canberra: AIHW.

Relational attributes

Metadata items which use this glossary item:Help on this term

Colorectal polyp type Health, Standard 29/08/2014

Colorectal polyp type code N[N] Health, Standard 29/08/2014

Colorectal polyps greater than or equal to 10 mm indicator Health, Standard 29/08/2014

Grade of colorectal polyps found Health, Standard 29/08/2014

National Bowel Cancer Screening Program NBEDS 2014-18 Health, Superseded 06/09/2018

National Bowel Cancer Screening Program NBEDS 2018–19 Health, Standard 06/09/2018

National Bowel Cancer Screening Program NBEDS 2019–20 Health, Standardisation pending 23/11/2018

Number of colorectal polyps found Health, Superseded 06/09/2018

Number of colorectal polyps found Health, Standard 06/09/2018

Patient—anatomical site of colorectal polyps Health, Standard 29/08/2014

Patient—anatomical site of colorectal polyps, code XX[XX] Health, Standard 29/08/2014

Patient—colorectal polyp type Health, Standard 29/08/2014

Patient—colorectal polyp type, code N[N] Health, Standard 29/08/2014

Patient—colorectal polyps found in colon indicator Health, Standard 29/08/2014

Patient—colorectal polyps found in colon indicator, yes/no code N Health, Standard 29/08/2014

Patient—colorectal polyps greater than or equal to 10 mm indicator Health, Standard 29/08/2014

Patient—colorectal polyps greater than or equal to 10 mm indicator, Yes/no code N Health, Standard 29/08/2014

Patient—grade of colorectal polyps found Health, Standard 29/08/2014

Patient—grade of colorectal polyps found, code N Health, Standard 06/09/2018

Patient—grade of colorectal polyps found, code N Health, Superseded 06/09/2018

Patient—number of colorectal polyps found Health, Standard 06/09/2018

Patient—number of colorectal polyps found Health, Superseded 06/09/2018

Patient—number of colorectal polyps found, N[NN] Health, Standard 06/09/2018

Patient—number of colorectal polyps found, number N[NN] Health, Superseded 06/09/2018

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