Renal biopsy in very elderly patients (over 80 years): clinical presentation, histological diagnosis, and long-term outcome

Purpose Data regarding the long-term outcome of very elderly (VE) patients undergoing renal biopsy (RB) are lacking. The objective of this study was to analyse the outcome of VE patients undergoing RB. Methods All patients over 65 years that underwent native RB between 2004 and 2016 in our center were included. Among the 206 included patients, those over 80 years (VE, 46 patients) were analysed and compared to those aged 65–80 years (160 patients). The outcomes of the VE group were analysed. Results Baseline characteristics, renal presentation, safety of RB and RB-related diagnosis were not different between VE patients and 65–80-year-old patients. Survival of VE patients was 73.1, 50.6 and 21.8% at 2, 4 and 6 years after RB, significantly poorer than those of 65–80-year-old group. Early death (