simple mastoidectomy

例句：

1. 1. The patient underwent asimple mastoidectomy to relieve hispain.
   患者接受了一个简单的乳突切除术来缓解他的疼痛。
2. 2. The doctor performed a simplemastoidectomy to remove the infectedtissue.
   医生进行了一个简单的乳突切除术以移除感染的组织。
3. 3. The surgery was successful andthe patient made a quick recovery after thesimple mastoidectomy.
   手术成功，患者在简单的乳突切除术后迅速康复。