Atypical presentation of moyamoya disease with pulmonary hypertension: A case report

Idiopathic pulmonary hypertension (IPAH) is a rare progressive vasculopathy with an unknown etiology, and it is fatal if not diagnosed and treated in time (1). Moyamoya disease (MD) is characterized by spontaneous occlusion of the circle of Willis, associated with an exaggerated development of collateral vascular network at the base of the skull (2). MD associated with pulmonary hypertension is an unusual presentation. Herein, we reported a child who presented with exercise-associated syncope and was diagnosed with MD with pulmonary hypertension