Cytokeratin 7

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CK7 immunostain in urothelial carcinoma. (WC)

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.

Images

Negative

Classic negative

Notes:

Images

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.
  2. Winters, R.; Naud, S.; Evans, MF.; Trotman, W.; Kasznica, P.; Elhosseiny, A. (Dec 2008). "Ber-EP4, CK1, CK7 and CK14 are useful markers for basaloid squamous carcinoma: a study of 45 cases.". Head Neck Pathol 2 (4): 265-71. doi:10.1007/s12105-008-0089-7. PMID 20614292.