The authors present a clinical analysis of the literature data regarding aged patients affected with glomerulonephritis (GN) and of 115 GN patients aged more than 65 years, biopsied in their own Center. Complications of renal biopsy, including the subclinical ones, were found in 19.1% of old patients compared to 19.2% of younger patients (p = NS), major complications in 5 and 1.4% respectively (p = NS). The most frequent GN was membranous GN (MGN) (27.8%), followed by IgA-GN (12%) and rapidly progressive GN (RPGN), idiopathic (8.6%) or secondary to vasculitis (8.6%). Eighteen out of 32 old MGN patients treated with alternated courses of steroids and immunosuppressive drugs for 6 months were compared to 32 MGN patients aged < 65 years identically treated. Complete remission was observed in 27.7% of cases and partial remission in 38.8% (p = NS). Complications of treatment were similar in the two groups of patients (p = NS). Patients with RPGN were treated with steroids (17 patients) plus immunosuppressive drugs (15 patients) and plasma exchange (13 patients). Systemic symptoms disappeared in 13/14 patients; ANCA became negative in all the 5 patients in whom they were detected; a 50% reduction of serum creatinine was obtained in 12 patients. These patients were compared to a control group of 26 patients aged < 65 years. Amelioration of renal function was evidenced more frequently among old patients with vasculitis (p < 0.05). Complications of treatment were more frequent among old patients with idiopathic RPGN (p < 0.05), but severe in only 1 case. Our data and data from the literature support the opportunity to perform renal biopsy in aged people, because it is as safe as in the younger population and allows a rational basis for treatment of GN. Clinical responses are similar to those of younger patients. Complications of treatment seem to be more frequent in old patients, but can be limited by some technical precautions and careful clinical monitorization.