Preserved myocardial [123I]metaiodobenzylguanidine uptake in autosomal recessive juvenile parkinsonism: First case report

Abstract
A decrease in myocardial uptake of iodine‐123–labeled metaiodobenzylguanidine (123I‐MIBG) has been reported in idiopathic Parkinson's disease (PD) using 123I‐MIBG myocardial scintigraphy. However, the patient with autosomal recessive juvenile parkinsonism (AR‐JP), caused by the parkin gene, presented here showed normal 123I‐MIBG myocardial uptake, suggesting that AR‐JP is a distinct disease entity from PD. Although the clinical features of AR‐JP are sometimes quite similar to those of late‐onset idiopathic PD, 123I‐MIBG myocardial scintigraphy may be a powerful tool to differentiate PD from other parkinsonian syndromes, including AR‐JP. © 2005 Movement Disorder Society