Objectivos: Correlacionar as manifestações clínicas da classificação CEAP com as alterações no Eco-Doppler venoso dos membros inferiores. Material e métodos: Foram avaliados 806 membros (403 doentes consecutivos), submetidos a Eco-Doppler venoso dos membros inferiores no decurso da investigação de insuficiência venosa crónica. Resultados: Média de idades de 46,8 anos, 360 mulheres e 43 homens. Constatou-se uma diferença entre o número de doentes sintomáticos conforme o género, 62,5% mulheres versus 44,2% homens (pObjective: The aim of our study was to correlate the clinical manifestations of the CEAP classification with insufficiency at lower extremity venous ultrasound examination. Methods: Eight hundred and six extremities (corresponding to 403 consecutive patients) were evaluated by vascular ultrasonography during the investigation of chronic venous insufficiency. Results: Mean age of 46,8 years-old, 360 women and 43 men. There was a statistically significant difference between symptomatic patients according to gender, 62,5% women versus 44,2% men (p