Cytokeratin 20
CK20 staining in small intestine.
Cytokeratin 20, abbreviated CK20, is a commonly used immunostain. It is also known as keratin 20.
Positive
CK20 positive and CK7 negative
- Virtually all colorectal carcinomas.[1]
- Merkel cell carcinoma - perinuclear dot-like pattern.
See also
References
- ↑ 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.