Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in density of the sharply demarcated right lower lobe heterogeneous opacity . Tubular opacity in the left upper lobe is unchanged . No interval change in small left pleural effusion and right upper thorax suture lines . Heart size is partially obscured by the pleural parenchymal process . Mediastinal contour is normal with a tortuous aorta .
    OUTPUT:
    
Mild interval increase in density of the right lower lobe opacity which may represent pneumonia , chronic inflammation or possible bronchioloalveolar carcinoma .