Histologic types of colon cancer include the following:

• Adenocarcinoma (most colon cancers).
  • Mucinous (colloid) adenocarcinoma.
  • Signet ring adenocarcinoma.
• Scirrhous tumors.
• Neuroendocrine.[1] Tumors with neuroendocrine differentiation typically have a poorer prognosis than pure adenocarcinoma variants.

References

1. Saclarides TJ, Szeluga D, Staren ED: Neuroendocrine cancers of the colon and rectum. Results of a ten-year experience. Dis Colon Rectum 37 (7): 635-42, 1994.  [PUBMED Abstract]
   
   

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