The Pickelhaube Sign: Novel Echocardiographic Risk Marker for Malignant Mitral Valve Prolapse Syndrome

Natural history of mitral valve prolapse (MVP) in the community is widely heterogeneous [(1)][1]. Prognosis in MVP ranges from normal life expectancy to subsets with high morbidity/excess mortality, including sudden cardiac death [(2)][2]. Although MVP is identified in a significant number of