Objective To report and evaluate the diagnostic value of endoscopic ultrasonography (EUS) in the lesions of upper gastrointestinal tract.

目的报告和评价超声内镜（EU S）对上消化道病变的诊断价值。

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EUS is valuable and safe for the diagnosis of ectopic pancreas in upper gastrointestinal tract. Depth of lesions revealed by EUS can help further treatment.

超声内镜对上消化道异位胰腺有重要的诊断价值，并可根据超声内镜所显示的病变深度决定下一步治疗，内镜下治疗是安全有效的。

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