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BackgroundPathological nipple discharge (PND) is usually associated with benign intraductal papilloma, which has a higher malignant rate than other benign tumors in most cases. Fiberoductoscopy (FDS) is an alternative possibility in diagnostic and finding lesions in PND patients. Previously, the bloody discharge was presumed to show papilloma or breast cancer. However, as we started using FDS, papilloma or cancer also can be found in the cases with a transparent or yellow discharge. This study investigated the value of FDS for the diagnosis and locating of intraductal lesions in cases with nipple discharge.MethodsA retrospective analysis of 3,696 cases that initially presented with pathologic nipple discharge was performed. There were 4,456 FDSs performed, and the correlations between the FDS findings for distinct types of lesions and the pathological diagnosis were determined.ResultsAmong the 2,816 cases of elevated lesions, FDS confirmed 1,933 cases of intraductal papilloma, 584 cases of intraductal papillomatosis, and 299 cases of intraductal carcinoma. Among the 880 cases of non-elevated lesions, FDS confirmed 380 cases of duct dilation, 350 cases of duct inflammation, 136 cases of duct dilation and inflammation, and 14 cases of ductal carcinoma in situ (DCIS). All patients followed up 3 months to 12 years. There were 241 DCIS in total, and 8 cases had local recurrence, 2 cases had metastasis. Invasive ductal carcinoma, 41 cases, 3 had recurrence and 3 had metastases, and 1 for death. Invasive lobular carcinoma 23 cases, recurrence 2 cases, metastasis 1 case.ConclusionsFDS has a high positive predictive rate and correlates well with the results of the pathological examination. The advantage of FDS is that it can observe the lesions, increasing the detection rate of early stage breast cancer, simple to operate, low cost, and no need for the appointment, appropriate for Chinese conditions.

Use of fiberoductoscopy for the management of pathological nipple discharge: ten years follow up of a single center in China