Service de Radiologie, Institut Gustave-Roussy, 39 rue Camille Desmoulins, 94805 Villejuif, France.
Fibromatosis of the breast is an uncommon disease, most often appearing as an aggressive lesion mimicking carcinoma on mammography. We describe, in an asymptomatic 40-year-old woman, an unusual imaging appearance of fibromatosis of the breast mimicking a benign lesion at mammographic and sonographic studies.