Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Lungs are clear . No pleural effusion or pneumothorax evident . The expansile lytic lesion within the right lateral seventh rib is not significantly changed compared to ___ and likely represents a plasmacytoma in this patient with known multiple myeloma . No associated displaced pathological fracture evident .
    OUTPUT:
    
No acute cardiopulmonary process . Stable - appearing right seventh expansile lytic lesion possibly representing plasmacytoma . No displaced pathologic fracture evident .