esophagogastroscopy

例句：

1. 1. The patient underwent esophagogastroscopy to investigate the cause of his persistent cough.
   病人进行了食管胃镜检查，以探究他持续咳嗽的原因。
2. 2. During the procedure, the doctor inserted a flexible tube into the patient's esophagus for better visualization.
   在手术过程中，医生将一根柔软的管子插入患者的食管，以便更好地观察。
3. 3. Esophagogastroscopy is an important tool in diagnosing and treating gastrointestinal diseases.
   食管胃镜检查是诊断和治疗胃肠道疾病的重要工具。