Fig. 14
From: Mimickers of breast malignancy: imaging findings, pathologic concordance and clinical management
Desmoid fibromatosis. A 47-year-old woman presented with a palpable mass. Lateral spot compression mammogram (a) shows an irregular, high-density mass with spiculated margins adjacent to the chest wall (arrow). Grayscale ultrasound (b) shows a corresponding irregular, hypoechoic anti-parallel mass with indistinct margins. T1-weighted post-contrast fat-saturated MRI of the chest (c) shows invasion of the pectoralis major muscle by this irregular enahancing mass (dotted arrow). Core needle biopsy showed desmoid fibromatosis. The patient underwent surgical excision