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A, Magnetic resonance imaging (MRI) showing sagittal view of a left posterior chest wall mass (STIR sequence) (case 2). B, MRI showing a sagittal view of a large thigh mass involving skeletal muscle and femur (STIR sequence) (case 3). C,D, Corresponding whole slide imaging showing relative circumscribed, multinodular neoplasm with alternating fibrous and myxoid stroma (C: case 2; D: case 3).
