Lytic, expansile lesion of the posterior arch of the 5th right rib, with an intrathoracic heterogeneous soft tissue component measuring 10.8 x 10.5 x 11.8 cm. The primary lesion is probably the rib lesion, as the rib is expanded (cf. eroded only) and there is amorphic osseous content extending from the rib into the soft tissue mass. The mass compresses the right lung and displaces the mediastinum to the left.
Large right pleural effusion.