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A 46-year-old male presenting with a small mass in the medial distal arm. (a) Longitudinal US study demonstrates a homogeneous hypoechoic mass (arrows) with posterior acoustic enhancement (arrowheads). (b) Sagittal T2W FSE and (c) axial PDW FSE MR images show a well-defined, homogeneously hyperintense oval mass (arrows) arising in relation to the median nerve (arrowheads-b) and brachial artery (arrowhead-c). (c). Histologically confirmed schwannoma.
