In chronic renal failure patients, the improvement in renal function induced by post-radiocontrast administration of N-acetylcysteine is strongly associated with suppression of oxidant stress-mediated proximal tubular injury.

Post-traumatic subarachnoidal-pleural fistulae are rare. We have found 22 cases in the literature. A patient who was successfully treated by thoracotomy 1 1/2 years after blunt thoracic trauma is presented. Myelography is the diagnostic test of choice and surgical closure is necessary in most cases.

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Coronary arteriovenous fistulas are rare anomalies that connect one or more coronary arteries to a cardiac chamber or other vascular structure. These communications can be occluded using percutaneous treatment, and there are currently several approaches and techniques. We report the case of an adolescent aged 12 years and 10 months, with a large fistula of the right coronary artery draining into the right ventricular cavity, in which the Amplatzer® Vascular Plug II device was used. The technical steps used are described in detail, with excellent immediate results.