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Summary: Male genital lymphedema is a debilitating condition with significant physiologic and psychologic ramifications. Classical surgical treatments for male genital lymphedema include primarily ablative procedures through removal of excess soft tissue, which often have poor aesthetic and functional outcomes. Super microsurgical techniques (including lymphovenous bypass and lymph node transfers) are promising contemporary interventions. In this case report, we aim to share our experience of lymphovenous bypass with indocyanine green (ICG) lymphangiography in the management of penile and scrotal lymphedema. We performed ICG lymphography of the male genitalia and right thigh by injecting ICG at multiple sites followed by concomitant evaluation with a handheld fluorescent portable imager. Skin incisions were designed over the linear lymphatics upstream from the site of obstruction and dermal backflow. Four end-to-end and one end-to-side lymphovenous bypasses were performed. After completion, lymphovenous bypasses patency was confirmed by injecting ICG proximal to the incision and observing flow. At 10-month clinic follow-up, the patient showed marked improvement with improved skin tenting, softer tissues, improved sensation, visible dorsal penile vein, ability to retract foreskin for cleaning, and confidence to engage in sexual activities. This case report describes successful use of lymphovenous bypass in the treatment of penile and scrotal lymphedema using ICG lymphography intraoperatively to map functioning of superficial lymphatics. The full potential of this microsurgical approach is yet to be discovered, and future studies are needed to enhance the long-term outcomes for the treatment of penoscrotal lymphedema.

Lymphovenous Bypass Using Indocyanine Green Mapping for Successful Treatment of Penile and Scrotal Lymphedema