目的 分析经黏膜下隧道内镜肿瘤切除术（STER）对贲门周围黏膜下肿瘤（SMT）患者复发的影响。 方法 92例贲门周围SMT患者，用随机数字表法分为观察组和对照组各46例，分别予以STER、内镜黏膜下剥离术（ESD）治疗，两组均术后随访12个月。比较两组围术期指标、治疗效果，术前、术后1周生活质量、睡眠情况、炎症指标、免疫指标，术后1周并发症，术后12个月复发情况。 结果 与对照组比较，观察组手术时间更长，住院时间更短，治疗费用更低，剥离速度更快（P < 0.05）。与术前比较，术后1周两组匹兹堡睡眠质量指数（PSQI）评分，血清白细胞介素-8（IL-8）、白细胞介素-6（IL-6）、高敏C反应蛋白（hs-CRP）水平，全血CD8⁺水平降低，且观察组更低（P < 0.05）。与术前比较，术后1周两组生活质量核心46问卷调查（QLQ-C46）、卡式评分（KPS），全血CD4⁺、CD4⁺/CD8⁺水平升高，且观察组更高（P < 0.05）。术后1周，两组并发症发生率比较，观察组更低（P < 0.05），术后12个月两组复发率比较，差异无统计学意义（P > 0.05）。 结论 贲门周围SMT接受STER治疗的效果良好，可改善围术期指标，提高生活质量、睡眠情况，抑制机体炎症反应，改善免疫功能，并发症发生风险更低，且未增加复发情况。

Objective To analyze the effect of endoscopic tumor resection by submucosal tunnel （STER） on recurrence in patients with submucosal tumors （SMT） around cardia. Methods A total of 92 patients with SMT around cardia were selected and divided into the treatment group（n = 46） and the control group（n = 46） using random number table method. The treatment group and the control group were treated with STER and endoscopic submucosal dissection （ESD）， respectively， and both groups were followed up for 12 months after surgery. Perioperative indexes， therapeutic effects， quality of life， sleep， inflammatory indexes， immune indexes before and 1 week after surgery， complications 1 week after surgery， recurrence 12 months after surgery were compared between the two groups. Results Compared with the control group， the surgery time of the treatment group was longer， the hospital stay was shorter and treatment cost were lower， and the stripping speed was faster （P < 0.05）. Compared with before surgery， scores of Pittsburgh sleep Quality index （PSQI）， serum levels of interleukin-8 （IL-8）， interleukin-6 （IL-6）， high-sensitive C-reactive protein （hs-CRP） and whole blood levels of CD8⁺ decreased in the two groups 1 week after surgery， and the levels were lower in the treatment group （P < 0.05）. Compared with the preoperative results， the levels of whole blood CD4⁺ and CD4⁺/CD8⁺， scores of Quality of Life Core 46 Questionnaire （QLQ-C46）， Karnofsky Score （KPS） were higher in the two groups 1 week after surgery， those in the treatment group was higher （P < 0.05）. 1 week after surgery， the complication rate of the two groups was lower in the treatment group （P < 0.05）， and 12 months after surgery， the recurrence rate of the two groups was not statistically significant （P > 0.05）. Conclusion STER treatment for SMT around cardia was highly effective， resulting in superior perioperative outcomes， enhanced life and sleep quality， reduced systemic inflammation， and bolstered immune function. Moreover， it significantly lowered the risk of complications without raising the rates of recurrence.