Abstract:Objective To investigate the impact of transaxillary approach on immune function and aesthetics of early thyroid tumors with airless endoscopy.Methods 98 patients with early thyroid from May 2019 to June 2021 were selected as the research objects. They were randomly divided into the observation group (n = 49) who was given transaxillary approach without air-filled cavity endoscopic surgery, and the control group (n = 49) who was given open thyroid tumor resection. The operation-related indicators, lymph node removal effect, immune function, complication rate and cosmetic effect 3 months after surgery were compared between the two groups.Results The intraoperative blood loss was (12.27 ± 4.53) mL and postoperative drainage volume was (78.25 ± 19.36) mL of the observation group, there were significantly less than those of the control group (23.71 ± 6.86) mL and (136.24 ± 45.28) mL (all P < 0.05). The operation time of the observation group was (110.16 ± 11.57) min, there was significantly longer than that in the control group (61.34 ± 6.27) min (P < 0.05). The number of dissected lymph nodes in the observation group (2.02 ± 1.03) and the control group (1.98 ± 1.05) had no significant difference (P > 0.05). One week after operation, CD3+(56.84 ± 5.06) % and CD4+(33.72 ± 4.08) % in the observation group were significantly higher than those in the control group (50.26 ± 4.87) % and (28.15 ± 3.97) % (all P < 0.05). The CD8+ in observation group (35.14 ± 5.32) % was significantly lower than in the control group (38.29 ± 5.76) % (P < 0.05). The incidence of complications in the observation group (0.00%) was significantly lower than that in the control group (8.16%), however, the difference was not statistically significant (P > 0.05). The cosmetic satisfaction of the observation group (97.96%) was significantly higher than that of the control group (81.63%) (P < 0.05).Conclusion Transaxillary approach without pneumatic endoscopy can significantly improve surgical indicators and immune function in patients with early thyroid tumors, reduce patient complications, and improve cosmetic satisfaction.