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胃癌是最常见的消化道恶性肿瘤之一。内镜超声检查术(endoscopic ultrasonography,EUS)对消化道管壁的高分层成像能力使其成为判断癌肿局部浸润深度的有力工具,同时,对超声范围内的周围结构的观察使得对淋巴结或邻近脏器受累情况的了解成为可能。国内外研究指出,EUS在对胃癌分期中存在分期过度(overstaging)或分期不足(understag-
Gastric cancer is one of the most common gastrointestinal malignancies. The high layered imaging ability of endoscopic ultrasonography (EUS) on the wall of the digestive tract has made it a powerful tool for determining the depth of local invasion of cancer and the observation of the surrounding structures within the ultrasound range has led to the identification of lymph nodes or Knowledge of the involvement of nearby organs becomes possible. Domestic and foreign studies have pointed out that EUS staging in gastric cancer there are over-or overshoot (understag-