fig1

Figure 1. Dynamic changes in appearance during sonography when the limb was squeezed and then released distal to the probe. A: No Doppler signal at rest; B: Doppler signal detected when the limb was squeezed; C: Signal disappeared upon release of the squeeze; D: Intraoperative microscopic finding of an ectasic lymphatic vessel corresponding to the preoperative sonographic location; E: ICG fluorescence confirmed the identification of a lymphatic vessel (images shown in Figure 1D and E were captured using a Leica microscope FL800^®; each square of the green background represents a distance of 1 mm).