[Neonatal cardiac tumour: diagnostic and therapeutic problems. One case (author's transl)].

We report a case of cardiac tumour, presenting as cardiac failure during the first hours of life and refractory hypoxia. The diagnosis was made with difficulty by angiography which revealed a filling defect in the right atrium, whilst echocardiography had shown only a localised pericarditis. The tumour (which extended into the pericardium) was found to fill the right atrium and appeared to extend towards the venae cavae and the left atrium, contraindicating any attempt at excision. The newborn infant died on D7 of a strictly intra-atrial well-limited fibromyoma.