Relative frequencies of marker positivity in gallbladder and colorectal cancer

Marker	Frequency in Gallbladder Cancer	Frequency in Colorectal Cancer
CA19-9	75% [18]	73-92% [19,20]
CEA	63-82% [18,21]	80-81% [22,23]
CDX-2	28-72% [24,25]	60-98% [22,24]
CK7	81-100% [26]	3-17% [20,28]
CK20	10-17% [20,26]	71-100% [20,27,28]