Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation or pneumothorax . Stable appearance of flattening along the left hemidiaphragm on the lateral radiograph may represent a stable small left pleural effusion or elevation of the left hemidiaphragm which is stable dating back to ___ but new from ___ . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . Mild calcification of the aortic knob is redemonstrated . The trachea is midline . No acute osseous abnormality is detected .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Stable flattening along the left hemidiaphragm may represent a stable small left pleural effusion or elevation of left hemidiaphragm , unchanged dating back to ___ but new from ___ . A lateral decubitus chest radiograph could be considered for further evaluation .