Multiple bilateral giant fibroadenomas associated with cyclosporine A therapy in a renal transplant recipient.

A 31-year-old woman developed a right breast mass following cyclosporine A therapy after a renal transplant. Several large breast masses continued to grow bilaterally. Mammography and ultrasonography showed features of giant fibroadenomas. The diagnosis was confirmed by biopsy of one of the masses. Awareness of the association between cyclosporine A therapy and fibroadenoma development in renal transplant recipients is highlighted.