Fig. 1
From: Desmoid-type fibromatosis of neck masquerading as nerve sheath tumors: two case reports
A 36-year-old male patient presented with a gradually developing swelling on the left side of his neck that had been ongoing for the past four years. MRI findings revealed the following: Coronal T1WI a shows a large, well-defined, multilobulated mass lesion with an isointense appearance on the left side of the neck. This mass extends along the left brachial plexus (red line) within the fascial planes, medially entering the left neural foramina and extending inferiorly into the mediastinum (indicated by white arrow). In coronal b and sagittal c STIR (Short-TI Inversion Recovery) images, the mass appears hyperintense, while it appears isointense in axial T1WI d. The mass displays hyperintensity (indicated by *) on axial T2WI (e), and multiple hypointense bands (indicated arrow in e) are seen within it. Notably, DWI maps f show no diffusion restriction within the mass. Post-contrast axial (g) and sagittal (h) T1WIs reveal heterogeneous intense enhancement (arrow in h) of the mass, with a few non-enhancing areas within the lesion