Table 2.

shows cases with falsely diagnosed as malignant by cytology which have been confirmed by tissue diagnosis as negative for malignancy and no mass or any malignant lesion was detected

Number	Cytologic diagnosis by brushing	Final Diagnosis by tissue as gold standard
1	Suggestive for malignancy	Primary Sclerosing cholangitis
2	Suspicious for malignancy	Primary Sclerosing cholangitis
3	Atypical cells are seen	Primary Sclerosing cholangitis
4	Atypical cells are seen	Primary Sclerosing cholangitis
5	Atypical cells are seen	Primary Sclerosing cholangitis
6	Atypical cells are seen	Primary Sclerosing cholangitis
7	Dysplastic cells are seen	Primary Sclerosing cholangitis