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Table 4 Sensitivity, Specificity, Positive Predictive Value, and Negative Predictive Value of Combined Expression of CK20 and MUC1 According to the Histological Type

From: Cytokeratin 20 (CK20) and apomucin 1 (MUC1) expression in ampullary carcinoma: Correlation with tumor progression and prognosis

Histological type Maker Sensitivity Specificity PPV NPV
Intestinal type      
  CK20+MUC1 0.625 0.963 0.909 0.813
Pancreatobiliary type      
  CK20+MUC1 0.722 0.920 0.867 0.821
Unusual type      
  CK20+MUC1 0.666 0.676 0.353 0.885
  1. PPV, positive predictive value; NPV, negative predictive value