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There are few data supporting the diagnostic yield of brush cytology depending on the order of cytologic preparation method or the location or shape of tumors in biliary strictures. We investigated diagnostic yields and variations in brush cytology with direct smear and cell-block preparations according to sampling preparation sequence and tumor location and shape in biliary strictures.

the korean journal of gastroenterology

Diagnostic Accuracy of Brush Cytology with Direct Smear and Cell-block Techniques according to Preparation Order and Tumor Characteristics in Biliary Strictures