淋巴瘤样肉芽肿(Lymphomatoid granulo-matosis,以下简称LYG)于1972年由Liebow等首先描述,系主要累及肺部的,表现为血管炎和肉芽肿的一种较少见的疾病,它和We-gener’s肉芽肿(特别是局限型)和肺部淋巴瘤很相似,但在临床和病理学上具有本身的特征而成为一种独立的疾病。病理特点LYG主要侵犯肺,特别是下叶,切面上大多呈3～6cm直径的浸润性硬结节、红色或灰色。组织学特征为病变呈血管中心性和破坏性的改变,血管周围及间质内有多形性细 Lymphomatoid granulomatosis (LYG), first described by Liebow et al. In 1972, is a less common disease that primarily affects the lungs and manifests as vasculitis and granuloma. It is associated with We -gener’s granulomatosis (especially localized) is very similar to pulmonary lymphoma but has its own characteristics clinically and pathologically as an independent disease. Pathological features LYG mainly infringe the lungs, especially the lower lobe, the incision is mostly 3 ~ 6cm diameter invasive hard nodules, red or gray. Histological characteristics of the lesions were vascular center and destructive changes, blood vessels around the interstitial and pleomorphic thin