Sentinel Lymph Node Biopsy (SLNB) after nipple sparing mastectomy (NSM) is controversial. This study aims to investigate feasibility of SLNB with radioisotope method.

Volunteer patients who has underwent to NSM at least more than 6 months prior will be included to the study. Radioisotope will be injected via intradermal route to the breast underwent to NSM patients and lymphoscintigraphy images will be obtained to detect activity in axilla. If hot nodule is detected then it will be concluded that SLNB can be performed after NSM.

Inclusion Criteria: NSM with/without SLNB at least 6 months prior to this study -

Exclusion Criteria: previous axillary dissection and active breast cancer

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Breast cancer is rarely seen in male patients and NSM is not performed thus study group consist of female volunteers.