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Figure 4a.   Plantar fibromatosis in a 65-year-old woman. (a) Clinical photograph shows a nodular soft-tissue mass along the medial plantar surface (arrows). (b, c) Sagittal T1-weighted (500/20) (b) and T2-weighted (2,000/80) (c) MR images show the mass (arrowheads). The high signal intensity on the T2-weighted image (c) corresponded to a more cellular lesion with less collagen than many fibromatoses (cf Fig 2a).