Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal images of the chest demonstrate slight interval improvement in the right basilar pneumothorax since previous imaging . The rest of the chest radiograph is essentially unchanged from prior imaging . The right basilar opacity is unchanged . The left - sided pleural effusion has not changed since prior imaging . There is no right - sided pleural effusion . Mild cardiomegaly is stable . Again seen is the SVC stent , femoral central line with tip in the right atrium , and pigtail catheter at the right lung base .
    OUTPUT:
    
Slight improvement in right basilar pneumothorax since prior imaging . Otherwise , essentially unchanged chest radiograph .