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(a) Chest X-ray showed a mass lesion in the right paramediastinal region (arrow); (c) Noncontrast-enhanced CT scan: an isodensity lobulated mass lesion in the right middle lobe of lung; ((b) and (d)) Chest CT scan showed a 30 × 29 mm heterogenously enhanced mass lesion with well-defined lobulated margin in the right middle lobe of lung, abutting the mediastinum.
