CẮT BÓC TÁCH DƯỚI NIÊM MẠC QUA ĐƯỜNG HẦM NỘI SOI DƯỚI NƯỚC ĐIỀU TRỊ UNG THƯ THỰC QUẢN GIAI ĐOẠN SỚM: BÁO CÁO CA LÂM SÀNG

Abstract

Underwater endoscopic submucosal tunnel dissection (U-ESTD) is a novel technique that enhances visualization and safety during endoscopic resection of early esophageal cancer. A 51-year-old man with early esophageal squamous cell carcinoma presented with two separate lesions. The cervical lesion was resected by conventional endoscopic submucosal dissection (ESD), whereas the mid-esophageal lesion was treated using the U-ESTD technique. The underwater approach provided a consistently clear field, improved visualization, and kept the submucosal layer stable, allowing safe en bloc resection. Histological analysis of the resected specimens demonstrated high-grade dysplasia in both lesions, with negative deep margins. The patient recovered smoothly, without postoperative complications. This case highlights the role of U-ESTD as a practical and precise option for managing early esophageal cancer, providing effective resection with the added possibility of reducing procedure-related adverse events.