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Colon tumor

Carcinoma

Hepatoid carcinoma


Reviewers: Charanjeet Singh, M.D. (see Reviewers page)
Revised: 15 October 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Rare tumor that presents with elevated serum AFP
● Metastases may mimic hepatocellular carcinoma (Am J Surg Pathol 2003;27:1302, Histopathology 1997;31:47)

Case reports
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● 42 year old man with ulcerative colitis and liver metastases (Hepatobiliary Pancreat Dis Int 2008;7:539)
● 59 year old man with adenocarcinoma having hepatoid component (Dis Colon Rectum 2003;46:826)
● 71 year old man with collision tumor with liposarcoma (World J Surg Oncol 2007;5:42)
● With ulcerative colitis (Dis Colon Rectum 2000;43:105)
● AFP producing tumor (Pathology 1995;27:277)

Micro description
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● Adenocarcinoma plus hepatocellular-like carcinoma composed of trabecular or solid pattern of large polygonal cells with abundant eosinophilic or clear cytoplasm
● Often vascular invasion

Micro images
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Stomach:

Cords of liver-like cells separated by sinuses

Positive stains
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● Mucin, polyclonal CEA (cytoplasmic staining in adenocarcinoma and canalicular staining in hepatoid areas)

End of Colon tumor > Carcinoma > Hepatoid carcinoma


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