Pheochromocytoma and hydralazine-induced myocardial ischaemia in a 14-year-old boy.

A 14-year-old patient with pheochromocytoma is described in whom myocardial ischaemia occurred following hydralazine administration. Possible mechanisms and previously reported paediatric cases are discussed. The need for caution in acute hypotension induction in pheochromocytoma is emphasized.