control group
(benign)
study group-1
(suspicious)
study group-2
(malignant)
sensitivity Specificity
Cytomorphology 26 37 37 52.11% 89.65%
Cytokeratin
Nuclear - - - 91.89% 89.5%
Cytoplasmic - 29 32
both - 3 4
    32 36
EMA
cytoplasmic - 28 28 90.5% 86.6%
membranous - 3 3
both - 1 4
Calretinin
Only nuclear - - -   97%  
Only cytoplasmic 24 33 37
both 2 1 -
Table 4: Expression of cytokeratin (CK 8/18), EMA, and Cytokeratin.