<prompt> Soft tissue mass in the chest with rib erosion in X-ray is seen in all except -LeukemiaEwings sarcomaMultiple myelomaOsteosarcoma  <response>: Multiple myeloma, Ewings sarcoma and parosteal osteosarcoma can cause rib lesion with adjacent soft tissue mass.Leukemia does not cause rib lesion with adjacent soft tissue mass. 