Cytokeratin 6 (CK6, K6)

Topic Completed: 1 October 2013

Revised: 28 February 2019

Copyright: 2003-2018,, Inc.

PubMed Search: Ck6
Page views in 2018: 1,136
Page views in 2019 to date: 446
Cite this page: Pernick N. Cytokeratin 6 (CK6, K6). website. Accessed May 24th, 2019.
Definition / general
Uses by pathologists
Positive staining - normal
  • Esophagus, epidermal and epithelial glands, hair and nails, oral mucosa, stomach, tongue (filiform papillae)
Positive staining - disease
  • Psoriasis, other skin disorders (see above)
Microscopic (histologic) images

Images hosted on other servers:

Keratoconus (fig A), normal cornea (fig D)

Mesothelioma-deciduoid (fig 5)

Squamous cell carcinoma-oral (fig a)

Benign epithelial
inclusions of axillary
lymph nodes
fig 1: CK5/6+; 2: p63+

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