| Summary: | Summary: Background: Sentinel lymph node (SLN) biopsy is an essential procedure for lymph node staging in patients with breast carcinoma. Technetium-99m-labelled nanocolloid (99mTc) is the most accurate and widely used lymphatic mapping agent; however, there are concerns pertaining to the associated exposure to radiation. Studies focusing on new agents are required. We aimed to evaluate the feasibility and safety of SLN detection using fluorescein and blue light-emitting diodes (LEDs) in breast carcinoma patients. Methods: In this prospective study, a total of 61 patients with breast carcinoma, requiring SLN biopsy, were enrolled. Both fluorescein and 99mTc were intradermally injected into the areola of the affected breast of each patient. SLNs stained with fluorescein were detected using blue LED light first, and then, any remaining SLNs were detected using a gamma detection probe. The detection rate was analyzed, and the presence of complications was investigated. Results: SLNs dyed with fluorescein using blue LED light were visualized in 57 of 61 patients (93.4%). None of the patients experienced complications related to the use of fluorescein or blue LED light. Conclusions: The detection of SLNs using fluorescein and blue LED light was feasible and safe in patients with breast carcinoma. This technique involves the use of visible light, allowing for SLNs to be viewed with the naked eye, and is quantifiable, easy to use, and economical. Keywords: Fluorescein, Breast carcinoma, Sentinel lymph node biopsy
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