Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi upright view of the chest . Deep brain stimulators project over the chest wall bilaterally with leads extending craniad . The heart remains markedly enlarged . There small pleural effusions partially layer along the lower lungs and there is likely adjacent compressive lower lobe atelectasis though difficult to exclude pneumonia . Mild edema difficult to exclude . The mediastinal contour appears stable . Bony structures are intact .
    OUTPUT:
    
Marked cardiomegaly , layering small pleural effusions , opacities in the lower lungs likely atelectasis though difficult to exclude pneumonia .