[Spontaneous microcavitations in the right cardiac chambers. Microcavitations in the right sections].

Spontaneous echocardiographic contrast has been occasionally detected in the left ventricle of patients with mitral valve prosthesis. Only one case has been so far described in which spontaneous microbubbles have been detected in the right ventricle. We report the clinical and echocardiographic findings of five patients in whom spontaneous echocardiographic contrast was detected in right cardiac chambers: one patient had pulmonary embolism, three patients had mitral valve disease and tricuspid regurgitation, one patient had a congestive cardiomyopathy.