胸腺囊肿在临床上少见,见于文献报道的年龄在20岁以下的胸腺囊肿75例,均无呼吸道受累症状。1963年以来作者经治10例,男4女6,年龄从初生至14岁,平均8.3岁。8例初诊为颈部囊性肿物(手术前诊断包括先天性颈部水囊瘤2、鳃裂囊肿3、淋巴瘤1、畸胎瘤1、胸腺囊肿1),另2例分别因 Grave 病和甲状旁 Thymus cysts are rare in the clinic. There are 75 cases of thymic cysts under the age of 20 reported in the literature. No symptoms of respiratory tract are present. Since 1963, the author has ruled 10 cases, including 6 males and 6 females, aged from the first to 14 years old, with an average of 8.3 years old. Eight cases were newly diagnosed as cervical cystic masses (preoperative diagnosis included congenital neck fluid cystic adenoma, cleft palate cyst 3, lymphoma 1, teratoma 1, and thymic cyst 1). The other 2 cases were due to Grave’s disease. And parasagittal