名词
中文翻译：咽后囊肿
同义词：
['pyriform sacculation', 'pyriform sinus abscess', 'pyriform sinus cyst']
例句：
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1. The patient's condition worsened after the surgery.
手术后，患者的病情恶化了。
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2. The child was diagnosed with a pharyngocele and required immediate treatment.
这个孩子被诊断出患有咽后囊肿，需要立即治疗。
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3.The doctor performed an X-ray to determine the cause of the pharyngocele.
医生进行了X光检查以确定咽后囊肿的原因。