LAUSR

567Background: This study investigated a usefulness of the combination of fluorescence imaging and computed tomography lymphography (CTLG) for sentinel lymph node biopsy (SLN) biopsy of early breast cancer patients. Methods: Between January 2013 and August 2016, 350 breast cancer patients without clinical evidence of lymph node metastasis were treated. Preoperaitve CTLG was performed using 64-row multidetector CT injected contrast agent. The contrasted lymph route and SLN were identified in reconstructed three-dimensional imaging. The SLN spot was indicated by CT laser light navigator system. We established typical pattern of the lymphography: stain defect of SLN, stagnation of lymphatic route for preoperative diagnosis of metastatic SLN. Intraoperative fluorescence images were obtained using the fluorescence imaging system (pde-neo). After dye mixed indocyanine green and indigocarmin was injected, lymphatic route was observed with fluorescence images. SLN biopsy was performed referring to the point by ax...