Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No previous images . The heart is within normal limits and there is mild tortuosity of the aorta . There is no evidence of pulmonary vascular congestion . There is a moderate right pleural effusion with compressive atelectasis at the base . No definite acute focal pneumonia .
    OUTPUT:
    
Moderate right pleural effusion with compressive atelectasis .