目的通过内镜观察分泌性中耳炎患者咽鼓管咽口及其周围的形态改变，探讨分泌性中耳炎与咽鼓管咽口状态的相关性及其临床意义。
Objective To observe pharyngeal orifice of eustachian tube in otitis media with effusion (OME) by using endoscope examination and assess its etiology and clinical therapy.
结论早期胃癌临床无特征性症状，诊断主要靠内镜医师认真细致观察和识别早期胃癌的形态改变。
Early gastric cancer clinically has no characteristic manifestations and diagnosis mainly depends on careful observation in endoscopy and identification of its changes in pattern.
结论：早期胃癌临床无特征性症状，诊断主要靠内镜医师认真细致观察和识别早期胃癌的形态改变。
Conclusion: Early gastric cancer clinically has no characteristic manifestations and diagnosis mainly depends on careful observation through endoscopy and identification of its changes in pattern.
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