Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate stable severe cardiomegaly . Mediastinal and hilar contours are unremarkable without evidence of vascular congestion to suggest overload . There is redemonstration of the bibasilar somewhat reticular opacifications which have been present to varying degrees since initial presentation to ___ in ___ . Compared to next preceding radiograph , ___ , there is mild interval improvement . Findings are better assessed on a CTA chest performed ___ at which point they were attributed to chronic lung changes thought to be sequelae of illicit drug use such as scarring , hemorrhage or chronic organized pneumonia . No definite new focal opacification is identified . There is redemonstration of the rounded lesion in the right upper lobe which appears stable since ___ and non-FDG avid on PET - CT performed ___ . Stability and lack of radiotracer uptake suggest this is an area of scarring . No pleural effusion or pneumothorax evident . No osseous abnormality identified .
    OUTPUT:
    
Relatively stable if not slightly improved bibasilar opacifications present since ___ and though to reflect chronic inflammatory changes reactive to illicit drug use . No definite new focal opacification identified . Right upper lobe nodule , unchanged since ___ and non-FDG avid as of ___ .