Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , unchanged from prior . Heterogeneous , asymmetrically distributed opacities remain more severe on the right than the left and show interval improvement , particularly in the left lung Cardiomegaly is unchanged . Mediastinal and hilar contours are unremarkable . There is no evidence for pulmonary consolidation , pleural effusion , or pneumothorax . Left subclavian port tip terminates in the upper SVC , unchanged from prior .
    OUTPUT:
    
Improving heterogeneous lung opacities . Rapid change suggests pulmonary edema , though underlying pneumonia in the right lung should be considered in the appropriate clinical setting .