Ni？o sibilante crónico y doble arco aórtico tipo "D": informe de un caso

right aortic arch with retroesophageal left innominate artery is an unusual pathology. the presence of patent ductus arteriosus, or left ductal ligament, does complete the vascular ring (type "d" double aortic arch). in infants with dysphagia, stridor and/ or recurrent wheezing, presence of vascular rings may be suspected. in older patients this diagnose is less common. children in school age or older with risk factors, positive bronchodilator test and bad evolution, could have other unusual ethiologies. we report an 8 year old patient with previous diagnosis of asthma with inadecuate response to treatment in whom this no frequent type of vascular ring was confirmed.