名词
中文翻译：囊肿
同义词：
['tumor', 'cyst', 'sac', 'pouch']
例句：
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1. The patient had a cyst on his neck that needed to be removed.
患者脖子上有一个囊肿，需要切除。
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2. The doctor found a cyst in the patient's liver that required surgery.
医生在患者的肝脏里发现了一个囊肿，需要进行手术。
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3. The cyst grew larger over time and eventually burst, causing severe pain.
这个囊肿随着时间的推移越来越大，最终破裂了，引起了剧烈的疼痛。