Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The heart size is unchanged . The same holds for the markedly generally widened and elongated thoracic aorta . Pulmonary vasculature is not congested . No signs of acute or chronic pulmonary parenchymal infiltrates can be identified and the lateral and posterior pleural sinuses are free . The on next previous chest examinations of ___ and ___ , identified retrocardiac parenchymal densities have now cleared up completely . As the patient has a significant right - sided convex scoliosis in the thoracic area , the retrocardiac parenchymal density could only be identified on the lateral view as the heart shadow was obscuring major portions of the retrocardiac area . Comparison of the lateral views ascertains that the density has now been normalized .
    OUTPUT:
    
Moderate cardiac enlargement but no evidence of advanced interstitial or alveolar edema or pleural effusion . No remaining evidence of retro - cardiac parenchymal density observed on previous examinations .