Thoracoscopic esophagectomy with total meso-esophageal excision reduces regional lymph node recurrence

PurposeWe investigated the operative outcomes of thoracoscopic esophagectomy (TE) in the prone position, using the concept of total meso-esophageal excision for esophageal cancer.MethodsThe medical records of 140 consecutive patients with esophageal cancer who underwent radical esophagectomy by TE were reviewed retrospectively, and operative outcomes were compared between patients treated before (non-meso-esophagus; non-ME group) and after (ME group) the introduction of total meso-esophageal excision (ME).ResultsThere were no significant differences between the groups in postoperative morbidity (non-ME group vs. ME group, 28.3% vs. 41.4%, p=0.119), 30-day mortality (non-ME group vs. ME group, 0% vs. 1.1%; p=0.433), and in-hospital mortality (non-ME group vs. ME group, 1.9% vs. 0%, p=0.199). Although overall survival and relapse-free survival did not differ significantly between the groups, the overall recurrence rate was significantly lower in the ME group than the non-ME group (non-ME group vs. ME group, 43.4% vs. 23%, p=0.011). In particular, the rate of regional lymph node recurrence in the mediastinum was lower in the ME group (non-ME group vs. ME group, 11.3% vs. 2.3%; p=0.026).ConclusionsOur results suggest that the ME procedure might be one of the procedures that reduce regional lymph node recurrence in the mediastinum without any deterioration in short-term outcomes.