Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal contours demonstrate a mildly tortuous aorta . The lung volumes are low , exaggerating parenchymal markings . Additionally , an ill - defined rounded right base opacity is present , and on lateral view likely localizes to the right lower lobe . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Right lower lobe opacity worrisome for pneumonia . Recommend follow - up to resolution .