Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable semi-erect frontal chest radiograph demonstrates markedly decreased aeration of the left lung , likely related to an increased loculated pleural effusion . There is no appreciable effusion , focal consolidation , or pneumothorax on the right . There has been interval resolution of mild pulmonary edema .
    OUTPUT:
    
Increased loculated left pleural effusion with significantly decreased aeration of the left lung .