囊性水瘤或囊性淋巴管瘤（ｃｙｓｔｉｃ ｌｙｍｐｈａｎｇｉｏｍａ），９０％以上见于２岁以下的儿童，在成人极其少见。本文结合我科收治的１例临床病例讨论了成人颈部囊性水瘤的；临床表现，病理及如何防止因误诊误治而可能导致的严重的并发症。１病例资料 患者，男，４７岁 Cystic or cystic lymphangioma, and more than 90% of children younger than 2 years of age are extremely rare in adults. This article combined with our clinical treatment of 1 case of adult cystic neck tumor discussed; clinical manifestations, pathology and how to prevent misdiagnosis and may lead to serious complications. 1 case information patients, male, 47 years old