Pericardial Effusion Associated with Diazoxide Treatment for Congenital Hyperinsulinism

<b><i>Background:</i></b> Diazoxide is widely used to manage congenital hyperinsulinism and is generally well tolerated. Pericardial effusion is not a recognized side effect of diazoxide, apart from 2 single case reports. <b><i>Case Description:</i></b> Three patients with congenital hyperinsulinism developed pericardial effusion at the ages of 7 weeks, 8 months, and 17 years. The duration of...