结节病是一种自愈率很高的疾病。多数学者认为 ,单纯肺门淋巴结伴或不伴纵隔淋巴结病变者 ,80 %～ 90 %可在 3年内自行消退。也有报道 6 0 %的病例可在 2年内自行缩小消失。肺实质受累者 ,部分病例亦可自行消退 ,其余多数病例停留在中度纤维化阶段 ,仅少数发展为进行性纤维化和 Sarcoidosis is a highly self-healing disease. Most scholars believe that simple hilar lymph node disease or without mediastinal lymph node disease, 80% to 90% of self-subside within 3 years. It has also been reported that 60% of cases can shrink and disappear within 2 years. Pulmonary parenchymal involvement, some cases also subsided on their own, the rest of the majority of cases remain in the stage of moderate fibrosis, only a few developed into progressive fibrosis and