Trial Parameters
Brief Summary
The purpose of the study is to evaluate the accuracy of the current diagnostic criteria of cardiac sarcoidosis.
Eligibility Criteria
Inclusion Criteria: * patients with suspected CS due to the following presentations: 1. age \< 65 years and new higher degree AV block, causative coronary artery disease excluded 2. age \< 65 years and new ventricular tachycardia, causative coronary artery disease excluded 3. age \< 65 years and ventricular tachycardia, causative coronary artery disease excluded 4. extracardiac sarcoidosis and cardiac involvement suggested (palpitations, abnormal ECG, abnormal echocardiography) To diagnose CS one of the following diagnostic tools will be used: A) World Association of Sarcoidosis and Other Granulomatous Disorders (WASOG) B) Heart Rhythm Society expert consensus statement on the diagnosis and management of arrhythmias associated with cardiac sarcoidosis C) Japanese Society of Nuclear Cardiology (JSNC) Patients whit histological confirmation from myocardial tissue fullfil will be defined as proven CS. (Group 1) Patients with clinical and imaging findings highly suggesting CS, but without