A number of 38 renal biopsies and 13 necroptic pieces removed from 51 prisoners were available for our study. From 51 cases, 21 patients were diagnosed with actual chronic glomerulonephritis, 19 patients with non-specific chronic glomerulonephritis, four patients with renal amyloidosis, and seven patients with glomerulonephritis lesions associated to pielonephritis.