The causes of CRF are summarized in Table 11. Any series showing the relative incidence of the various causes of CRF must be viewed with some scepticism, because about one third of patients present for the first time with renal failure so advanced that even detailed investigation cannot reveal its cause. Thus, if a high dose IVU is performed and scars are present in the kidney, a diagnosis of chronic pyelonephritis is made, but if the outline is smooth and the patient has proteinuria, then chronic glomerulonephritis is the chosen diagnosis. Since there is no possibility of making a more accurate assessment and since it is usual for common things to occur commonly, a common diagnosis is chosen, thus fulfilling the axiom. Table 12 is taken from the European data summarized by Wing (1977).
KeywordsChronic Renal Failure Infective Endocarditis Polyarteritis Nodosa Urethral Stricture Renal Osteodystrophy
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