An unusual case presenting with hypertensive crisis

signs. The chest was clear to auscultation, and heart sounds were normal without murmurs. The abdomen was plain and not tender, without masses or organomegalies. Results of urinalysis, complete blood count, serum electrolyte levels, hepatic-function and renal-function tests showed no abnormalities. A 24-h ambulatory blood pressure monitoring was then performed (Spacelabs 90207-30, with recording of blood pressure every 15 min), revealing a normotensive state throughout the registration (24 h mean blood pressure: 125±12/68±8 mmHg; preserved nocturnal blood pressure fall). An echocardiogram revealed normal parietal thickness and function and a radiograph of the chest showed no abnormalities.