Juvenile papillomatosis, also called Swiss cheese disease, usually affects teens and young adults, although it can sometimes occur in women over 30. These papillomas are very much like fibroadenomas: free-moving, round and well-defined, and painless. Each growth can measure anywhere from 1 to 8 centimeters. Often, juvenile papillomatosis includes other benign changes to the ducts and lobules, such as cysts, papillary apocrine change, and sclerosis adenosis. It can be found in one or both breasts.
Generally, a young person diagnosed with juvenile papillomatosis is thought to have a slight increase in the lifetime risk of developing breast cancer. However, the risk may be higher if there is a family history of breast cancer and the condition affects both breasts. Whatever your situation, it makes sense to discuss your family history with your doctor so you can make a follow-up plan that’s right for you.