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. 2015 Jul 1;10(2):61–70. doi: 10.5114/pg.2015.51182

Table IV.

Cytokeratins in neoplasms of the gut (based on NCCN Clinical Practice Guidelines in Oncology)

CK20 CK7(+) CK7(–)
CK20(+) Pancreas
Cholangiocarcinoma
Stomach		 65%
65%
40%		 Colon
Stomach		 80%
35%
Exclusion:
– Neuroendocrine tumour
– HCC
– Oesophagus – squamous		 Exclusion:
– Cholangiocarcinoma
– HCC
– Oesophagus – squamous
– Pancreas
CK20(–) Pancreas
Cholangiocarcinoma		 30%
30%		 HCC
Neuroendocrine tumour (intestine)
Oesophagus – squamous		 80%
80%
70%
Exclusion:
Colon		 Exclusion:
– Cholangiocarcinoma
– Pancreas