L-cell, glucagon-like peptide and pancreatic polypeptide/peptide YY (PYY)-producing tumor.
Gastrointestinal stromal tumor.
Marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue type.
Mantle cell lymphoma.
Diffuse large B-cell lymphoma.
Burkitt-like/atypical Burkitt lymphoma.
Adenocarcinomas account for the vast majority of rectal cancers. Other histologic types of colorectal cancer account for an estimated 2% to 5% of colorectal tumors.
Hamilton SR, Aaltonen LA: Pathology and Genetics of Tumours of the Digestive System. Lyon, France: International Agency for Research on Cancer, 2000.
Kang H, O'Connell JB, Leonardi MJ, et al.: Rare tumors of the colon and rectum: a national review. Int J Colorectal Dis 22 (2): 183-9, 2007.
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May 28, 2015
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