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There is a well-circumscribed ovoid mass measuring 27 X 18 X 16 mm of deep subcutaneous location in the medial aspect of the right arm, centred on the medial cutaneous nerve, anterior to the basilic vein and medial to the triceps brachii (medial/long head). It elicits an isosignal to the muscles on T1, high signal on T2 with an iso-to slightly hyperintense component and heterogeneous enhancement on postcontrast sequences.