The use of intravenous recombinant tissue plasminogen activator (rt-PA) administered within 3 hrs from symptom onset is beneficial in selected patients independent of age; although oldest patients (> or = 80 years) are excluded a priori. We report an experience relative to rt-PA treatment in the oldest patients including outcome at 3 months. Data were from the hospital-based Perugia Stroke Registry. Seventy-two consecutive acute stroke patients, fulfilling NINDS and EUSI-criteria were treated with rt-PA of these 23 patients (30.5%) were > or = 80 years. The median and mean age were, respectively, 72.5 and 71.1 +/- 12.7 years (range 35-94). The proportion of favorable outcome at 3-months did not differ between groups (55% elderly versus 51.1% of younger patients). Proportions of unfavorable outcome and death from baseline were similar in both groups of patients. Age did not influence prognosis in patients treated with rt-PA. The oldest stroke patients should not be excluded from rt-PA treatment on the basis of age per se.