原始神经外胚层周围性肿瘤 (ｐｅｒｉｐｈｅｒａｌｔｕｍｏｒｓｏｆｐｒｉｍｉｔｉｖｅｎｅｕｒｏｅｃｔｏｄｅｒｍ)是发生于中枢神经系统以外的一组神经源肿瘤 ,国内少有报道。患者男 ,2 5岁。因下睑肿胀 5年 ,于 1999年 12月就诊。用抗生素治疗后症状未减轻。眼部检查 :双眼 The primitive neuroectodermal peripheral tumors (peripheraltumorsofprimitiveneuroectoderm) is a group of neurogenic tumors that occur outside the central nervous system, rarely reported in China. Patient male, 25 years old. Swelling of the lower eyelid for 5 years, in December 1999 treatment. After treatment with antibiotics did not reduce the symptoms. Eye examination: eyes