[2 cases of Beckwith-Wiedemann syndrome. Morphogenetic characteristics, cardiac involvement and current diagnostic possibilities].

: This report describes two new cases of BWS. This diagnosis of BWS may be missed because of variable or incomplete clinical expression. Recognition of such patients is important, however, because they have the potential for development of neoplasias. There also appears to be an increased risk of malignancies associated with hemihypertrophy and BWS.