Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest demonstrates well expanded lungs . There is an area of increased opacity projecting over the anterior first left rib , which may represent degenerative change , however a pulmonary process can not be excluded . The cardiomediastinal and hilar contours are unremarkable . There is no definite free air beneath the right hemidiaphragm , pneumothorax , pleural effusion , or consolidation .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . No definite free air beneath the right hemidiaphragm . To exclude free air under the right hemidiaphragm a true upright radiograph or CT could be performed . 3 . Area of increased opacification projecting over the anterior left first rib may represent degenerative change , however a pulmonary process can not be excluded . Recommend apical lordotic view for additional evaluation .