Among 122 hypertensive children seen i'rom 1976 to 1986 in a pcdiatric hospital at Santiago, Chile, evidence of a xenovascular cause was detected in ten. Their mean age at present;!tion was 6.2 years (range 2-149 months); the most frequent complaint was headache; mean systolic and diastolic pressures were 168 and 113.5 mmHg respectively. Renal function was normal. Intravenous pyelography disclosed abnormalities in seven cases. Arterial angiography showed evidence of Takayasu's arteritis in 4 patients and fibromuscular dysplasia in 1. In three cases complete oclussion of a renal artery was found; however only one had renal perfusion through colateral circulation wich allowed surgical revascularization. One case of renal stenosis was succcsfully treated by percutaneous transluminal angiopla^ty. Selective medical treatment, specially in active Takayasu's disease, appropriate surgical correction or transluminal dilatation resulted in cure of hypertension in this series. (Key words: arterial Hypertension, renovascular, medical and surgical treatment).Actualmentc sc reeonoce quc la hipertension arterial es una importance causa de morbirnortalidad, quc afecta a personas de todas las edades; 1 -2 SLI prcvaicncia en adultos es aproximadamente 20%^3 oscilando entre 0,6 y 11,0% en nifios 4En pediatn'a, la hipertension secundaria ocupa un lugar preferente; en nuestra cxpcriencia 82,6% de los pacientes con hipertension arterial corresponden a una causa renal y de ellos 9% tienen origen renovascular.5 Experiencias extranjcras han dcmostrado que las reparaciones de las lesiones arterialcs responsables dc la hipertension renovascular (HRV) tienen una evolucion muy satisfactoria, abrigando esperan/.as de un future inejor para estos pacientes de corta edad.6 " 10 Presentamos una experiencia en e] manejo de la HRV en una unidad de nefrourologia analizando fundamentalmente los metodos de estudio, el tratamiento y la evolucion inmediata, segun las diferentes etiologias, con el objeto de dar a conocer un problema, que aim que poco frecue rite, requiere especial consideration para su diagnostico precoz y tratamiento oportuno.