[Acute interstitial nephritis with oliguric renal failure following phenylbutazone medication]

Acute oliguric renal failure due to acute interstitial nephritis developed in a patient after treatment with phenylbutazone. The histological, immuno-histological and serological features in this case are compatible with the involvement of a delayed hypersensitivity reaction in the pathogenesis of this drug-induced interstitial nephritis. Other side effects of phenylbutazone on the kidney and the water and electrolyte metabolism are discussed.