Plantar fibromatosis: use of magnetic resonance imaging in diagnosis.

For patients presenting with classic features of plantar fibromatosis, a presumptive diagnosis may be made on clinical grounds alone. In less clear cases, a biopsy may allow confirmation of the diagnosis; however, a biopsy exposes the patient to operative complications. Magnetic resonance imaging (MRI) offers a noninvasive method for confirmation of the clinical diagnosis that may obviate the need for a biopsy. We describe a case that demonstrates the potential of this technique.