Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Airspace consolidation within the left lower lobe is concerning for pneumonia . The previously noted right pleural effusion has resolved . A cavitary structure in the left lung apex measures 2 .6 x 2 .6 cm with peripheral / apical opacity could reflect prior infection or malignancy . A retrocardiac opacity better assessed on previous imaging is consistent with a known hiatal hernia . Please correlate clinically . Cardiomediastinal silhouette is stable . Bony structures appear intact .
    OUTPUT:
    
1 . Left lower lobe pneumonia . 2 . Cavitary lesion in the left apex with apical opacity , question sequelae of old infection / malignancy . Consider CT to further assess once the acute symptoms resolve . 3 . Hiatal hernia .