中线型恶性网状细胞增生症简称中线型恶网,又名恶性肉芽肿或坏死性肉芽肿.是在面部尤以鼻腔、鼻咽部发生的一种进行性坏死性溃疡,向四周扩延并常累及内脏,予后不良。国内外文献上报导只有个别病人能生存五年以上,大部分病人于一年内死亡。此病用化疗效果不佳,放射治疗已成为主要治疗方法,且公认为最有效的疗法。目前对于此病的放疗效果 Neutral type of malignant reticular cell hyperplasia referred to as the nemesis nebula, also known as malignant granuloma or necrotizing granuloma .In the face, especially in the nasal cavity, nasopharynx, a progressive necrotizing ulcer, to the surrounding expansion Delay and often involve the internal organs, after the bad. Domestic and foreign literature reported that only individual patients can survive for more than five years, most of the patients died within a year. This disease with poor chemotherapy, radiation therapy has become the main treatment, and recognized as the most effective therapy. The current radiotherapy for the disease