Comparison of the clinical efficacy of thoracoscopic combined with laparoscopic esophagectomy(TLE) in the middle and lower stages of esophageal cancer patients between Mongolian and Han nationalities in Inner Mongolia

Objective To prospectively study the clinical diversity of the middle and lower segment of stage of esophageal cancer patients who accepted the thoracoscopic combined with laparoscopic esophagectomy(TLE) between Mongolian and Han nationalities in Inner Mongolia, to further clarity the feasibility of TLE. Methods 92 consecutive cases of middle and lower segment of stage of esophageal cancer patients of Mongolian and Han were selected, and the patients accepted the TLE, including 41 cases of Mongolian and 51 cases of Han.The postoperative pain was evaluated with the visual analog scale(VAS) at 1-14d after operation, and the postoperative complication, the hospitalization of postoperation and the postoperative pathological situation were compared. Results Compared with the Han patients, the postoperative pain of Mongolian significantly reduced, duration of postoperative of pain significantly shorter in the 1-5 d after surgery(P 0.05). The Mongolian had lower incidence rate of postoperative complication compared with Han(9.8% vs.27.5%, χ2=4.522, P 0.05). The postoperative hospitalization of Mongolian was significantly shorter than that of Han[(11.9±1.2) d vs.(15.5±1.0) d, t=-15.811, P<0.05]. No significant difference in the total number of cases of lymph node dissection, the abdominal lymph node dissection and the chest lymph node dissection.The number of the regional lymph nodes metastasis of Mongolian was higher than that of Han [(3.9±0.7) vs.(1.8±0.7), t=13.460, P<0.05], most of which were poorly differentiated(6/25/10 vs 20/20/11, χ2=7.139, P<0.05). Meanwhile, the incidence rates of cancer embolus in the vasculature and nerve invasion of Mongolian were higher than those of Han(75.6% vs.47.1%, 70.7% vs.17.6%, χ2=7.706, 26.418, all P<0.05). Conclusion The Mongolian were more easily tolerant to the TLE, which has the advantages of reducing pain, trauma, rapid recovery, satisfactory curative effect and the lesser postoperative complications.The degree of the malignancy of esophageal cancer of Mongolian was higher than Han.Mongolian who suffered from esophageal cancer needed earlier discovery, earlier treatment and further research of the causes of difference. Key words: Mongolian nationality; Esophageal tumour; Thoracoscope; Laparoscope; Lymph node dissection; Postoperative complication