A 66-year-old man had diffuse alveolar hemorrhage and rapidly progress
ive glomerulonephritis due to IgA nephropathy, The diffuse alveolar he
morrhage resolved after high-dose corticosteroid therapy, and renal fu
nction improved after plasmapheresis, This response suggests an adjunc
tive role for plasmapheresis in the treatment of patients presenting t
his rare clinical picture.