In the preoperative ICG lymphography to mark the location of the lymphatic vessels (preoperative day 1), we observed a linear pattern that indicated good lymphatic function in the medial side of the right forearm, which suddenly stopped in the middle of the forearm (Video). Although we massaged the arm and waited for more than 17 hours hoping ICG to move ahead, the disrupted line never advanced (Fig 2). The finding was similar on the next day, more than 17 hours after the injection. We decided to make a skin incision for LVA at the distal part of ICG disruption.