[Congenital diverticulum of the right ventricle apropos of a case complicated by pulmonary endocarditis].

Congenital diverticulum of the right ventricle is an extremely rare abnormality, usually discovered by chance during evaluation of a more complex cardiac malformation. We report a case of isolated diverticulum of the right ventricle in a 14-year old boy who also had pulmonary valve endocarditis secondary to acute osteomyelitis. Owing to the evolutive risks inherent in the diverticulum and to the persistence of highly mobile pulmonary valve vegetations 5 years after the initial infectious episode, surgical treatment of the lesions had to be performed. The diagnostic, evolutive and therapeutic problems raised by right ventricular diverticula are discussed.