Unusual arteriovenous communications presenting as cardiac murmurs in infancy. Report of three cases.

Three cases are decribed of infants presenting with murmurs in, or adjacent to, the thorax and considered to be cardiac. Later full investigations established that the murmurs were due to aorto-azygos fistula, vertebral arterio-venous fistula and intercostal angioma, respectively. While such lesions are extremely rare, the possibility of systemic arteriovenous communication should be considered in infants with atypical murmurs.