软骨黏液纤维瘤是一种少见的软骨来源的良性肿瘤,绝大部分发生在儿童和青年人的长骨干骺端,很少发生于颌面部,发生于下颌后窝区者国内未见报道。本文报告1例,并结合相关文献,对其临床表现、诊断及鉴别诊断、治疗进行讨论。 Cartilaginous myxoma is a rare benign tumor derived from cartilage. Most of them occur in the metaphysis of long bones of children and young people, rarely occur in the maxillofacial region, and no cases have been reported in the posterior fossa of the mandible. This article reports 1 case, combined with the relevant literature, its clinical manifestations, diagnosis and differential diagnosis and treatment are discussed.