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Table 1 Distribution of CK7, CK20 and CDX2 staining with percentages of positive cells in primary colorectal, gastric and pancreatic adenocarcinomas

From: The value of CDX2 and cytokeratins 7 and 20 expression in differentiating colorectal adenocarcinomas from extraintestinal gastrointestinal adenocarcinomas: cytokeratin 7-/20+ phenotype is more specific than CDX2 antibody

   Negative Positive Total
   0 1+ 2+ 3+ 4+  
Colorectal adenocarcinoma CK7 92 (78%) 8 (7%) 6 (5%) 5 (4%) 7 (6%) 118
  CK20 19 (16%) 20 (17%) 16 (13%) 22 (19%) 41 (35%) 118
  CDX2 4 (3%) 7 (6%) 15 (13%) 21 (18%) 71 (60%) 118
Gastric adenocarcinoma CK7 12 (20%) 5 (9%) 7 (12%) 6 (10%) 29 (49%) 59
  CK20 28 (47%) 16 (27%) 6 (10%) 8 (14%) 1 (2%) 59
  CDX2 23 (39%) 13 (22%) 9 (15%) 10 (17%) 4 (7%) 59
Pancreatic adenocarcinoma CK7 1 (3%) 1 (3%) 1 (3%) 9 (28%) 20 (63%) 32
  CK20 25 (78%) 6 (20%) 1 (3%) 0 (0%) 0 (0%) 32
  CDX2 27 (85%) 3 (9%) 2 (6%) 0 (0%) 0 (0%) 32