Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes , with resultant bronchovascular crowding . Note is made of a large hiatal hernia . Left basilar opacity likely reflects a combination of pleural effusion and consolidation . There is a heterogeneous opacity at the right base . No pneumothorax . Elliptical opacity with a sharp medial margin projects over the right midlung at the level of the seventh posterior interspace , probably pleural loculation or focal pleural thickening .
    OUTPUT:
    
1 . Left basilar opacity may reflect a combination of pleural effusion and consolidation , although infection is not excluded . 2 . Heterogeneous right basilar opacity may represent atelectasis , aspiration , or pneumonia in the appropriate clinical setting . 3 . Focal right pleural thickening , possibly involving major fissure .