Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Branching nodular opacities in the left upper lobe , as well as linear and irregular opacities in the lingula . The right lung is relatively clear . Heart size is normal . The hila are unremarkable . No pleural effusions or pneumothorax .
    OUTPUT:
    
Multifocal nodular opacities in the left upper lobe can represent bronchopneumonia . Irregular opacities in the lingula have a more chronic appearance may be the sequelae of prior infection . If prior imaging is available for comparison , the images can be reviewed and an addendum dictated . Otherwise follow - up chest radiograph in 4 weeks is suggested to ensure resolution .