Focal segmental glomerulosclerosis after poststreptococcal glomerulonephritis in the elderly: a case report.

Acute poststreptococcal glomerulonephritis (PSGN) is quite rare in the elderly population. It is very difficult to recognize because the initial symptoms are similar to those of more common diseases of this age group. Compared with younger patients, elderly patients with PSGN tend to have a high incidence of renal function impairment and anuria or prolonged oliguria. Recovery from acute PSGN in the elderly is less predictable than in children and younger adults, especially when associated with severe impairment of renal function. We present the case of an elderly patient with PSGN, who had a skin infection of the face and anuria on admission. Percutaneous left renal biopsy was performed in the initial hospitalization period and in the recovery phase of the disease. Renal function recovered within two months. However, increased urinary white blood cell sediments with normal serum creatinine concentrations persisted in the successive three years of follow-up. Renal biopsy was repeated and showed evidence of focal segmental glomerulosclerosis.