Lymphangiomas are congenital malformations that occur most commonly in the head, neck or axilla and 80-90% oflesions are detected by the age of two years. Cystic lymphangioma of the breast in a 37-year-old woman ; it showedtypical well-defined tubular and nodular opacity on mammogram, a multilocular septated anechoic mass onultrasonogram, and low and high signal intensity on T1- and T2-weighted MR images, respectively. These findingsbefore surgery indicated cystic lymphangioma.