Histological study of the structural layers around the esophagus in the lower mediastinum

Figure 4 D2-40-stained tissue sections. A: D2-40 staining in cadaver 7. The white arrowheads indicate fascia A, and the black arrowheads indicate fascia B. One lymph node (LN) of the lateral part of the intermediate layer is observed in the upper left part of the image. The lymphatic vessels (arrow) near the LNs extend on one side toward the right pleural cavity and lungs, and on the other side toward the ventral side of the esophagus. Furthermore, in this slide, lymphatic vessels in the intermediate area and those in the paraesophageal area were in close proximity; B: Cadaver 3 D2-40-stained section at the lower thoracic esophagus level immediately inferior to the inferior pulmonary vein. The white arrowheads indicate fascia A, and the black arrowheads indicate fascia B. The lateral part of the intermediate area LN is observed in the upper left part of the image, the lymphatic vessels (arrow) near the LNs extend anteriorly into the ventral part of the intermediate area. TD: Thoracic duct; LN: Lymph node; IA: Intercostal artery.