Intensity-Modulated Radiation Therapy for Primary Brain Tumors(英文)

Radiation therapy has been used to treat primary brain tumors as standard primary and/or adjunctive therapies for decades. It is difficult for conventional radiotherapy to deliver a lethal dose of radiation to the tumors while sparing surrounding normal brain due to complicated structures and multifunction in human brain. With the understanding of radiation physics and computer technology, a number of novel and more precise radiotherapies have been developed in recent years. Intensity modulated radiotherapy (IMRT) is one of these strategies. The use of IMRT in the treatment of primary brain tumors is being increasing nowadays. It shows great promise for some of primary brain tumors and also presents some problems. This review highlights current IMRT in the treatment of mainly primary brain tumors.

放射治疗124例原发性脑瘤临床分析

本文回顾124例原发性脑瘤的单纯放疗和术后放疗的5年生存情况。材料与方法：分析经术后病理或CT、MRI证实的124原发性脑瘤。8mv－x线或60Co常规分割全脑照射，中线剂量30～40Gy，局部追加照射DT10－20Gy。全脊髓预防照射DT25～30Gy。结果：5年生存率：全部切除者和部分切除者分别是7／13（53．4％）、8／23（34.8％）；放射剂量50～60Gy者好于低剂量组；胶质瘤、髓母细胞瘤、室管膜瘤分别为10/32（31.2％）、2／6（33．3％）、1／2。结论：病人生存期长短取决于手术切除程度、放射剂量与肿瘤组织学类型。

儿童中枢神经系统恶性肿瘤诊断与治疗

儿童脑瘤是儿童期最常见的恶性实体肿瘤,由一组异质性的疾病组成。其中髓母细胞瘤,幕上原始神经外胚叶肿瘤(SPNET)和原发中枢生殖细胞瘤(CNS GCT)是最常见的儿童青少年中枢神经系统恶性肿瘤。这些胚胎源性肿瘤对放疗化疗较敏感,手术联合放疗和化疗是标准的治疗。然而,全中枢放疗可导致生长发育迟缓和内分泌功能异常。国外已进行大量的联合化疗减少放疗剂量方面的临床研究。本文主要是复习有关儿童髓母细胞瘤、幕上原始神经外胚叶肿瘤和原发中枢生殖细胞瘤的临床研究及诊断和治疗的进展。