Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable bilateral lower lung volumes . The small left pleural effusion is new . There is minor atelectasis of the left lung base . No pneumothorax , focal consolidation , or pulmonary edema . Stable appearance of the mediastinum and hila . The heart size is normal .
    OUTPUT:
    
Small left pleural effusion and minor left lower lung atelectasis .