The non-compact myocardium also called "spongy left ventricle" is a rare cardiomyopathy characterized by excessive and prominent trabeculations associated with intertrabecular recesses communicated with the ventricular cavity. Since its real prevalence is still imprecise, the most frequent clinical manifestations range from ventricular arrhythmias, thromboembolism to heart failure; echocardiography has remained the traditional diagnostic tool, but magnetic resonance imaging (MRI) is increasingly used. We present de case of a 21-year-old male with diagnosis of non-compacted myocardium secondary de parvovirus B19, the diagnosis was made by IRM and Antibodies positive to Parvovirus B 19. Clinical features of the case are presented and discussed in the context of the literature.