Selective IgA deficiency associated with glomerulonephritis and oligoarthritis.

A 59 year old woman with selective IgA deficiency associated with oligoarthritis and glomerulonephritis is described. She was seropositive for rheumatoid factor and renal histological examination showed a focal glomerulonephritis. High titre rheumatoid factor and a focal glomerulonephritis were also present in the only other well documented report of selective IgA deficiency and renal disease. Histological examination of the kidney suggested that the glomerulonephritis was mediated by immune complexes.