Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . Hazy opacities in the lower lungs bilaterally are noted and could represent pneumonia . Due to low lung volumes evaluation is quite limited . Evaluation for pleural effusion is somewhat limited on the lateral view due to obliquity , though no large effusion is seen . No pneumothorax . Heart size appears stably enlarged . Mediastinal contour is unchanged . Bony structures are intact .
    OUTPUT:
    
Poorly defined opacities in the lower lungs which could represent pneumonia . Limited exam .