Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new small left pleural effusion compared to the prior study . There appears to be an adjacent opacification . There is no pneumothorax . The cardiomediastinal contours are otherwise unremarkable . The visualized osseous structures are unremarkable .
    OUTPUT:
    
New left small pleural effusion with adjacent consolidation likely secondary to compressive atelectasis ; however , an infection must be considered in the appropriate clinical setting . Furthermore , if there is clinical concern for pulmonary embolus , a CTA of the chest is recommended for further evaluation , as pulmonary embolus can not be excluded by this study . Findings were discussed with Dr . ___ by Dr . ___ by telephone at 3p on the day of the exam .