Abstract: Objective:To evaluate the MRI findings of cavernous lymphangioma in lower limbs,in order to improve the diagnosis and differential diagnosis of this disease.Materials and Methods:10 cases with histologically confirmed carvnous lymphangioma were collected and retrospectively studied.MR scan were performed in all cases,and CT scan in 2 cases.Results:The typical image shows the hyperplasia soft tissues of lower extremity as grids,with the impractical and broden lymphatic vessels.The extent of disease usually extensive,it can involve musculus and ossature.Conclusion:MR examination is very useful in diagnosing the carvous lymphangioma,It can help determining the extent of disease,and wether the musculus and ossature were involved or not.It was very useful to determine the opration.