RT Book, Section A1 Kim, Julian A2 Kuerer, Henry M. SR Print(0) ID 6414096 T1 Chapter 58. Endoscopy for Nipple Discharge T2 Kuerer's Breast Surgical Oncology YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-160178-8 LK accesssurgery.mhmedical.com/content.aspx?aid=6414096 RD 2024/04/19 AB The development of microendoscopes for visualization of mammary ductal anatomy has progressed rapidly over the past 2 decades. The first published reports of mammary ductoscopy appeared in 1991 authored by Okazaki et al as well as Makita et al in which the endoscopy was performed with essentially a bare fiberoptic cord with no working channel for insufflation or aspiration.1,2 Subsequently, Susan Love published a small series of breast endoscopy in 9 patients with a diagnosis of ductal carcinoma in situ at the time of mastectomy.3 Again, using an early generation instrument, they encountered difficulties with insufflation of the ducts and navigation of ductal branches due to rigidity of the scope. As technology improved, a number of semiflexible microendoscopes emerged, which allowed insufflation via a working channel that was formed by a sheath that surrounded the fiberoptic core. Reports of the feasibility of visualization and navigation to the level of the terminal ductal lobular units were generated initially in human mastectomy specimens and subsequently in patients under local anesthesia.4,5 These technologic developments resulted in visualization of submillimeter intraductal lesions and access into the terminal human mammary ducts, which has spawned a new era of intraductal approaches to diagnosis and treatment of breast diseases.