Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right infrahilar , and left basilar opacity is unchanged , with a small left pleural effusion also unchanged . The cardiac silhouette remains moderately enlarged . There is mild engorgement of pulmonary vasculature . There is no pneumothorax . The mediastinal contours are notable only for a tortuous aorta . A pigtail catheter is noted in the right upper quadrant .
    OUTPUT:
    
Right infrahilar , and left basilar opacity , which could reflect pneumonia and / or atelectasis . There is a small associated left pleural effusion . Recommend repeat dedicated PA and lateral chest radiograph upon improvement in symptoms to document resolution .