Operative findings and schematic illustration of transhiatal dissection of the retroaortic lymph node. The retroaortic space was visualized by anterior rotation of the thoracic aorta by hand-assisted laparoscopic surgery. (a,
b) Dissection of the metastatic lymph node by EnSeal device. (c) Schematic illustration of Figure 4b. The area spaced by dotted line in Figure 4c corresponds to Figure 4b. A, aorta; F, finger of the operator; H, hemi-azygos vein; L, metastatic lymph node; P, parietal pleura; V, vertebra.