Diagnostic value of intraoperative rapid cytokeratin immunostain in the cytological evaluation of sentinel lymph nodes in patients with invasive lobular carcinoma.

In this study, the addition of R-CK did not improve the diagnostic accuracy in cases classified as negative or positive by IC, but resulted in a considerable increase in TAT. Although R-CK proved to be of diagnostic value in atypical IC cases, it did not appear to influence clinical management.