Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral lung volumes are low . In comparison 04 :28 portable chest radiograph , there is mild improvement of the small left pleural effusion and decreased level of opacification of the retrocardiac lung regions suggesting improved ventilation . The right IJ is in stable position terminating in mid SVC . Moderate cardiomegaly and pulmonary vascular congestion are stable and unchanged from prior study . No pneumothorax nor consolidation seen .
    OUTPUT:
    
1 . Since ___ : 28 chest radiograph , there has been mild improvement of small left pleural effusion and improved ventilation of the retrocardiac lung regions . Otherwise , pulmonary vascular congestion and pulmonary edema are relatively unchanged . There is no evidence of pneumonia . 2 . Right IJ is in stable position in the mid SVC