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[Retroperitoneal fibrosis with eye-drops containing timolol].

Retroperitoneal fibrosis occurred in a 62-year-old man who had been treated during 4 years eye-drops containing timolol. The disease was diagnosed after a sudden episode of nephritic colic. The recovery was progressive and uneventful. No corticosteroid therapy was used. Six months later the patient remained free of symptoms. Although an idiopathic origin could not be excluded, the causal relationship with timolol treatment is likely due to the chronology of events and the lack of other causes.