Background/aims: Thoracoscopic esophagectomy in the prone position (ThE-PP) is usually performed with four ports, which makes the operation almost solo surgery. We now perform ThE-PP with five ports, with the advantage of having the assistant able to provide additional help. The aim of this study was to elucidate the benefits of ThE with five ports over ThE with four ports.
Methodology: We retrospectively reviewed the clinical charts of 47 patients with esophageal cancer who underwent ThE-PP. A total of 14 patients underwent ThE-PP with four ports and 33 with five ports. We compared the number of dissected lymph nodes (LNs)--total; upper left, middle, and lower mediastinum--between the four-port and five-port groups.
Results: The number of LNs dissected, including the total, the upper left and middle mediastinum, were not significantly different between the two operations. The number of LNs dissected from the lower mediastinum, however, was significantly higher in the five-port group (median number and interquartile range: 5 and 2-7, respectively) than in the four-port group (0.5 and 0-3, respectively) (P < 0.01).
Conclusions: ThE-PP performed with five ports has an advantage over the same operation done with four ports in terms of lymphadenectomy in the lower mediastinum.