The median follow-up time was 30, 6 ± 14, 1 months (9 - 60 months), the mean time of overall survival was 46.9 ± 1.9 months (13 - 60 months); 100% overall survival rate in the first year; after 2 years 85.9%, after 3 years 65.3% and 5 years 55.9%.