Cytokeratin 18 (CK18, K18)

Author: Nat Pernick, M.D. (see Authors page)

Revised: 10 December 2015, last major update October 2013

Copyright: (c) 2003-2015,, Inc.

PubMed Search: CK18[title]
Cite this page: Cytokeratin 18 (CK18, K18). website. Accessed May 21st, 2018.
Definition / general
Uses by pathologists
Positive staining - normal
Positive staining - not malignant
Positive staining - malignant
Negative staining
Microscopic (histologic) images

Images hosted on Pathout server:

Contributed by Leica Microsystems, Biosystems Division-

Colon (normal)-Cytokeratin 8/18 (5D3) with
intense cytoplasmic and membranous staining

Images hosted on other servers:

Choroid plexus papilloma

Colon (normal)

Liver and bile ducts are CK18+

Neuroendocrine carcinoma (unknown site)


Additional references