Breast cysts are a common mammographic and sonographic finding, and can be of different types:
- simple breast cyst: typically is a well-defined, anechoic lesion with imperceptible wall and posterior acoustic enhancement 1
- complicated breast cyst: contains intracystic echoes or debris with other features of a simple cyst
- complex breast cyst ("solid and cystic mass"): thick walled with thick septa or an intracystic solid mass