[Ventricular storm in a young man with primary hypokinetic dilated cardiomyopathy: why thinking of sarcoidosis?].

The diagnostic approach to patients with cardiac sarcoidosis is challenging, as the disease may occur as a subclinical entity or have heterogeneous clinical manifestations ranging from ventricular arrhythmias to advanced cardiac failure. Therefore, while clinical suspicion remains key, imaging techniques such as nuclear magnetic resonance imaging and myocardial scintigraphy play an important confirmatory role. Final diagnosis requires histological proof on cardiac or extracardiac biopsy. A multidisciplinary context is essential for appropriate diagnosis, staging and management. We present the case of a young man with dilated cardiomyopathy in whom, following the onset of malignant and recurrent ventricular arrhythmias, a final diagnosis of cardiac sarcoidosis was reached based on a host of invasive and non-invasive diagnostic techniques, allowing tailored treatment.