Unusual mammographic and ultrasonographic findings in fibromatosis of the breast

Abstract

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.

Primary fibromatosis of the breast in a 13 years old girl

“…The mammary fibromatosis can also appear in an area with irregular and/or ill-defined outlines, heterogeneous, hyper outlines and hypoechogenic with or without post-mitigation [6][7][8]. The literature have also described the small-sized lesions that are homogeneous lesions in very regular outlines [7,8].…”

“…The literature reports other alternative descriptions so unusual. The lesion sometimes appears as a mass with a lobulated or not outlines, but still well defined [4][5][6][7][8]. An ossifying lesion was also noticed.…”

“…They may include a hypo-échogènic lesion in the irregular outlines, in the main vertical line with or without post-mitigation [3,[6][7][8]. The mammary fibromatosis can also appear in an area with irregular and/or ill-defined outlines, heterogeneous, hyper outlines and hypoechogenic with or without post-mitigation [6][7][8].…”

“…The associated microcalcifications are rare. Finally, in some rare cases, the lesion has no mammographic presence [6][7][8].…”

“…After the injection of chelated forms of gadolinium, in T1-weighting, and after a fat signal saturation, we notice a heterogeneous raising in the ill-defined outlines. In dynamic acquisition, the lesion presents a progressive raising, thing which is not typical to the mammary carcinoma [3,4,7,8]. The magnetic resonance imaging and the scanner are importante to estimate a possible parietal invasion [4,7,8].…”