One week after the diagnosis of meningococcal meningitis, an 8-year-old boy
presented with acute renal failure and hypocomplementemia. A renal biopsy
showed "postinfectious glomerulonephritis" and acute tubular necrosis. Hema
turia, proteinuria, and low complement levels persisted, and 2 years later
a follow-up renal biopsy revealed dense deposit disease. The apparent progr
ession of postinfectious glomerulonephritis to dense deposit disease as obs
erved in this patient has not been previously described.