Abstract
A 76-year-old man was referred to our hospital because of an abnormal shadow in the mediastinum. Chest computed tomography showed a 5-cm-diameter mass in the right middle mediastinum. Magnetic resonance imaging showed a mass with a homogeneous component. T1- and T2-weighted images showed a higher signal intensity than that of skeletal muscle. Video-assisted thoracoscopic surgery was performed to resect the tumor. The histopathological diagnosis was a MALT lymphoma. We report a rare case of a MALT lymphoma arising from the middle mediastinum.
