A 14-year-old girl presented with malignant hypertension. Physical examinat
ion and abdominal computerized tomography revealed a paraaortic mass. Urina
ry catecholamines, serum renin, and aldesterone levels were high. The mass
was totally excised and a paraganglioma of the organ of Zuckerkandl was con
firmed. The hypertension resolved after surgery.