duodena

例句：

1. 1.The doctor performed a surgery on the patient's duodenal ulcer.
   医生为患者的十二指肠溃疡进行了手术。
2. 2. The patient was admitted to the hospital for further treatment of his duodenal ulcer.
   患者因十二指肠溃疡被收治入院接受进一步治疗。
3. 3.The patient experienced severe abdominal pain after the duodenal ulcer surgery.
   患者在十二指肠溃疡手术后经历了严重的腹部疼痛。