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.2016 Mar;23(2):242-51.
doi: 10.1007/s12282-014-0561-z. Epub 2014 Aug 24.

Mammary ductoscopy and watchful follow-up substitute microdochectomy in patients with bloody nipple discharge

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Mammary ductoscopy and watchful follow-up substitute microdochectomy in patients with bloody nipple discharge

Masujiro Makita et al. Breast Cancer.2016 Mar.

Abstract

Purpose: In order to evaluate the diagnostic and therapeutic potential of mammary ductoscopy and watchful follow-up for treating bloody nipple discharge, we investigated the incidence of cancer evolving from the location related to the affected duct and the disappearance of nipple discharge.

Patients and methods: Between April 1998 and March 2008, we assessed 709 lesions among 624 patients without a diagnosis of malignancy at the time of 6 months after mammary ductoscopy. The median follow-up time was 5.5 years. We reviewed the subjects' charts retrospectively and investigated the dates on which discharge-related cancer was diagnosed and the disappearance of discharge was noted after the initial examination with mammary ductoscopy.

Results: The incidence of cancer evolving from the location related to the pathological duct was 11 % (78/709). Nipple discharge disappeared in 480 (85.1 %) of the 564 followed up lesions, with the exception of 78 breast cancers and 67 resected benign lesions. The rate of disappearance for nipple discharge in the cases of intraductal papilloma at the first examination was 82.5 %. In cases in which no obvious lesions were observed on mammary ductoscopy, there was a 90 % probability that the nipple discharge would disappear, and the rate of evolving breast cancer in the cases of atypical papillary lesions at the first examination was significantly higher than that observed in the cases of intraductal papilloma, at 50 and 8.9 %, respectively.

Conclusions: Information revealed by mammary ductoscopy is useful for differentiating patients who should be subjected to intensive examinations and those who should expect disappearance of their discharge. Mammary ductoscopy and watchful follow-up can substitute microdochectomy in patients with bloody nipple discharge.

Keywords: Breast cancer; Endoscopic classification; Intraductal papilloma; Mammary ductoscopy; Microdochectomy; Nipple discharge.

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