Two examples of functional cysts include the following: Dermoid cysts are also called teratomas. They can contain different tissue types, such as skin, hair, and fat. Dermoid cysts usually show no ...

However, some types of cysts like endometriomas, cystadenomas, and dermoid cysts can be malignant or borderline and tend to grow with age. “If left untreated, these cysts may cause health issues ...