Fig. 1From: Pleural recurrence 21 years after complete resection of thymic mucoepidermoid carcinoma: a case reporta Chest X-ray before the initial surgery. A solid mass with a clearly defined border can be observed in the right lower hilum, showing a positive silhouette sign at the border of the right atrium. b Enhanced chest computed tomography scan. An 80-mm solid mass with a clearly defined rim in the anterior mediastinum is observedBack to article page