TOPICS: Nitrogenous waste products, electrolyte disturbances, focal segmental glomerulosclerosis, membranous nephropathy, diabetes mellitus, hypertension, uremia, pericarditis, encephalopathy, asterixis, uremic frost, renal osteodystrophy, secondary hyperparathyroidism, subperiosteal thinning, tertiary hyperparathyroidism, dialysis, renal cell carcinoma, renal transplant