结节病是一种较常见的全身性疾病,其特征是广泛非干酪性上皮样细胞肉芽肿,病灶可被吸收或转变为纤维组织,90%以上累及胸部[1],病因尚不清楚,可能是对吸入的抗原性刺激的炎症和免疫性反应,也可见于成人免疫缺乏者的治疗中及肺移植者等[2]。依据1996年修订的美国癌症联 Sarcoidosis is a more common systemic disease characterized by a wide range of non-caseous epithelioid cell granulomas that can be absorbed or transformed into fibrous tissue, with more than 90% involving the chest [1], the etiology of which is unknown, It may be an inflammatory and immunologic response to inhaled antigenic stimulation, as well as in the treatment of adults with immunodeficiency and lung transplant [2]. According to the 1996 revision of the United Cancer Alliance