成髓细胞瘤治疗失败的主要原因是局部复发,尽管对后颅窝给予术后高剂量放疗(>53 Gy)使生存率有了明显提高,但局部复发率仍为40％。 本文作者报道了1992年4月～1993年11月在Arizona大学健康科学中心接受了立体放射外科(SRS)单次补量治疗的4例成髓细胞瘤病人的治疗情况。4例病人按Chang氏分期系统分为T_2-T_(3a)期,均有组织学诊断,其中2例儿童年龄为7岁和11 The main reason for the failure of myeloblastoma therapy was local recurrence. Although high-dose radiotherapy (>53 Gy) was given to the posterior cranial fossa to improve survival, the local recurrence rate was still 40%. The authors reported on the treatment of 4 myeloblastoma patients who underwent a single volume of stereotactic radiosurgery (SRS) at the University of Arizona Health Science Center from April 1992 to November 1993. Four patients were divided into T_2-T_(3a) phases according to the Chang’s staging system, and all had histological diagnosis. Two children were 7 years old and 11 years old.