Clinical Efficacy of Single-Channel Gastroscopy, Double-Channel Gastroscopy, and Double Gastroscopy for Submucosal Tumors in the Cardia and Gastric Fundus



To determine the feasibility and efficacy of single-channel gastroscopy, double-channel gastroscopy, and double gastroscopy in treating submucosal tumors in the cardia and gastric fundus.


The data of 77 patients with submucosal tumors (SMTs) in the cardia and gastric fundus parts of the stomach who underwent single-channel gastroscopy, double-channel gastroscopy, and double gastroscopy were retrospectively analyzed. The observed therapeutic effect, complications, and local recurrence from these three groups were then compared.


All lesions were completely taken out under endoscopy, and the operation time for single-channel gastroscopy group was 20–90 min with an average of 44.5 min, and the postoperative hospitalization time was 5–9 days with an average of 7.5 days. The operation time for the double-channel gastroscopy group was 40–110 min with an average of 60.5 min, and the postoperative hospitalization time was 7–10 days with an average of 8.3 days, whereas the operation time of double gastroscopy group was 35–120 min with an average of 66.3 min, and the postoperative hospitalization time was 7–10 days with an average of 8.5 days. No patient was required to be transferred to the General Surgery Department for continuous treatment. Bleeding was noted from all the patients during operation, and hemostasis was performed successfully. Postoperative bleeding was not observed in any of the cases. Full-thickness resection was performed in all the three groups. No residual or recurrent lesions were detected via reexamination of gastroscopy in all the patients.


Single-channel gastroscopy, double-channel gastroscopy, and double gastroscopy present potential capability with distinctive advantages in the endoscopic treatment of submucosal tumors of the cardia and gastric fundus, and it also shows that appropriate operation methods should be selected based on the situation of an individual patient.

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I want to express my gratitude to all those who helped me during the writing of this thesis. I gratefully acknowledge the help of my supervisor, Dr. Shen Lei, who provided valuable suggestions and advice for the manuscript preparation. Without his instruction, insightful criticism, and expert guidance, the completion of this thesis would not have been possible. Dr. Hesheng Luo also gave valuable suggestions for the manuscript. Also, I gratefully acknowledge colleagues, who work in the Endoscopy Center of Renmin Hospital of Wuhan University; they gave me huge help.

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SS.W, L.S, and HS.L performed the research; SS.W analyzed the data, prepared the figures, and drafted the manuscript; L.S and HS.L edited and revised the manuscript; SS.W is responsible for the conception and design of the research.

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Correspondence to Lei Shen.

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Wang, S., Luo, H. & Shen, L. Clinical Efficacy of Single-Channel Gastroscopy, Double-Channel Gastroscopy, and Double Gastroscopy for Submucosal Tumors in the Cardia and Gastric Fundus. J Gastrointest Surg 24, 1307–1313 (2020).

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  • Gastroscopy
  • Double-channel gastroscopy
  • Double gastroscopy
  • Cardia
  • Gastric fundus