Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a persistent opacity at the right lung base likely a combination a pleural effusion atelectasis however , in the absence of a lateral view , pneumonia can not be excluded in the appropriate clinical setting . There is a small left pleural effusion . Stable moderate pulmonary vascular congestion . Mild cardiomegaly is stable . Mediastinal widening is stable . Right Port - A - Cath terminates in the low SVC . There is no pneumothorax .
    OUTPUT:
    
Persistent opacity at the right lung base likely combination pleural effusion and atelectasis however , in the absence of a lateral view , pneumonia can not be excluded in the appropriate clinical setting .