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Updated: September 5, 2006


Carcinoma is a very common type of cancer. Carcinomas can occur in many different places. Examples include the colon, skin, and lungs.

What carcinomas have in common is the kind of cells from which they originate. Specifically, all carcinomas develop from epithelial tissue.

Colorectal Carcinomas

Adenocarcinoma is cancer of a gland. (Glands are made of epithelial tissue.) Adenocarcinomas are the most common type of colorectal cancer.

Neuroendocrine carcinoma is another type of carcinoma that occurs in the colon and rectum. Neuroendocrine carcinomas account for about four percent of all colorectal cancer.

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  2. Colon Cancer. The Health Resource, Inc. 5 Jul. 2006 [http://www.thehealthresource.com/cancer_info/colon_cancer.cfm].
  3. Onoda, Naoyoshi and Kobayashi, Hikaru. "Neuroendocrine Carcinoma of the Sigmoid Colon: Report of a Case." Surgery Today 29.10 (Sep. 1999): 1079-1082. PubMed. 24 Jun. 2006 [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10554334&dopt=Abstract].
  4. Q&A's: I Have Been Told I Have a Type of Cancer Called Adenocarcinoma. What is This? CancerBacup. 26 Jul. 2005. 5 Jul. 2006 [http://www.cancerbackup.org.uk/QAs/509].
  5. Saclarieds, T.J. and Szeluga, D. "Neuroendocrine Cancers of the Colon and Rectum. Results of a Ten-Year Experience." Diseases of the Colon and Rectum 37.7 (Jul. 1994): 635-642. PubMed. 24 Jun. 2006 [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=8026228&dopt=Citation].
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