Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film there is slight increased heterogeneous parenchymal abnormality . Lingular opacity is unchanged . Mild vascular congestion is also relatively unchanged . No pleural effusion or pneumothorax is identified . There is no pulmonary edema . The cardiac and mediastinal contours are normal . There are old right rib deformities .
    OUTPUT:
    
Compared to the prior film there is possibly increased heterogeneous parenchymal abnormality that remains concerning for atypical pneumonia or early heart failure .