Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . Comparison is also made with a prior CT torso from ___ . Lung volumes are low which limits the evaluation . A small left pleural effusion is noted . No definite signs of pneumonia or CHF . Pulmonary nodules seen on prior CT can not be clearly identified . No large masses are seen . Bony structures appear grossly stable . Please note , known bony metastatic disease is not well appreciated on radiograph .
    OUTPUT:
    
Low lung volumes with small left pleural effusion . No definite sign of pneumonia or overt CHF .