Cytokeratin 7

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CK7 immunostain in acinar adenocarcinoma of the lung.

Cytokeratin 7, also keratin 7 and CK7, is a common low molecular keratin and a very common immunostain.[1]

Positive

Classic positive

  • Pancreas.
  • Stomach.
  • Urothelial carcinoma.
  • Esophageal adenocarcinoma.

Negative

Classic negative

Notes:

See also

References

  1. 1.0 1.1 1.2 1.3 1.4 Chu, P.; Wu, E.; Weiss, LM. (Sep 2000). "Cytokeratin 7 and cytokeratin 20 expression in epithelial neoplasms: a survey of 435 cases.". Mod Pathol 13 (9): 962-72. doi:10.1038/modpathol.3880175. PMID 11007036.