第二腮裂囊肿位于颈动脉鞘外侧、胸锁乳突肌前内侧。
The second BCC is centered lateral to the carotid sheath and anteromedial to the sternocleidomastoid muscle.
颈部囊性肿块的鉴别诊断包块腮裂囊肿(BCC)，胸腺囊肿、囊性神经鞘瘤、坏死的淋巴结。
The differential diagnosis for a cystic neck mass includes BCC, thymic cyst, lymphangioma, cystic schwannoma, and necrotic lymph node.
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