CK7+ / CK20+

 
 
Tumor
TCC (Urothelial)
+
+
Ovarian Ca. (mucinous)
+
+
Pancreatic Ca. (subset)
+
+
Cholangiocarcinoma (subset)
+
+
Gastric Adenoca. (subset)
+
+
Sm. Int. (non-Ampullary) Ca.
+
+ (60-70%)
Follow-up Markers for CK7+/CK20+
IHC Stain
Comment
Uroplakin
Supportive of urothelial carcinoma
Thrombomodulin
Expression may be seen in urothelial carcinoma or adenocarcinoma of the bladder
Expression supports urothelial carcinoma
CK5/6
Expression supports urothelial carcinoma
May be supportive of pancreatic ductal carcinoma
CA19-9
May be supportive of pancreatic ductal carcinoma
+/- expression seen in pancreatic ductal carcinoma, adenocarcinoma of the bladder, and ovarian mutinous carcinoma
Expression supports urothelial carcinoma
References
Arch Pathol Lab Med. Vol 134, February 2010.
 
Hadi, AIMM Annual Meeting, “Carcinomas of Unknown Primary”, presentation, 2011.