本文报道两例肾功能正常的肺出血—肾炎综合征。例1为18岁男性,因咯血入院,胸片示两肺中下野阴影。尿蛋白(+),尿沉渣中红细胞30～100×10~6/L,白细胞7～45×10~6/L,偶见透明及颗粒管型,肾功能正常。肾穿刺免疫荧光检查有 IgG 及补体呈线条状沉积,光学显微镜检查示肾小球肿胀,细胞增殖,20个肾小球中有2个新月体。血中抗肾小球基膜 This article reports two cases of normal renal function of pulmonary hemorrhagic nephritis syndrome. Example 1 was an 18-year-old man hospitalized with hemoptysis. The chest radiograph showed the shadow of both lungs. Urine protein (+), urinary sediment in the red blood cells 30 ~ 100 × 10 ~ 6 / L, white blood cells 7 ~ 45 × 10 ~ 6 / L, occasionally transparent and granular tube type, normal renal function. Kidney puncture immunofluorescence IgG and complement were linear deposition, optical microscopy showed glomerular swelling, cell proliferation, 20 glomeruli in 2 crescent. Blood anti-glomerular basement membrane