background and aim: to determine the morbi-mortality of patients treated with endovascular stenting for carotid artery disease at san juan de dios hospital, costa rica; from january 2007 to february 2010. methods: a retrospective observational registry of patients treated with carotid artery endovascular stenting was maintained at our institution over 13 months. based on the information acquired from medical records, two subgroups were identified: symptomatic and asymptomatic. some aspects were researched and evaluated such as risk factors, abcd scale, affected cerebral territory, invasive and non-invasive lesion measurements, stent sizing and finally peri-operatory complications. results: 76 patients were identified in this series, 87% (n=66/76) symptomatic and 13% (n=10/76) asymptomatic. the most frequent risk factor was hypertension, followed by smoking. underestimation by ultrasound of lesion severity was found in up to 24% (n=18/76) of patients. predilatation was done in 55% (n=42/76) and most frequent stent sizes identified were 7x30mm or 8x30mm in 47% (n=36/76) of patients. neurologic morbidity of asymtomatic patients was 0%, and in the symptomatic group was a 3% (2/66) conclusion: endovascular therapy demonstrated to be a safe and effective as a revascularization technique; however larger patient series should be investigated for grater statistical significance.