CASE PRESENTATION: A 80 y/o f, from Trinidad, 10yrs ago underwent chest liposarcoma excision and had chemotherapy in 2005. Her dyspnea was on exertion after 1 block. PT returned to USA and had a CT Angio of Chest: Large heterogeneous 10 cm x 11cm mid/ posterior mediastinal soft tissue compressing the trachea, RT mainstem bronchus, esophagus, left atrium and brachiocephalic vein. She had a mediastinal biopsy and partial 2ndand 3rd rib resection and placement of 2 endobronchial stent in the right main bronchus. Pathology of Mediastinal biopsy: recurrent liposarcoma, sclerosing type and pleural fluid showed atypical cells.