Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient has undergone right - sided thoracentesis now with small right - sided pleural effusion and small left pleural effusion with adjacent compressive atelectasis . Increased density along the right lung may represent expansion edema . There is no pneumothorax . Heart size is difficult to assess . Calcifications are seen in the aortic knob .
    OUTPUT:
    
Decrease in right - sided pleural effusion after thoracentesis , now small . Small left - sided pleural effusion and probable expansion edema in the right lung .