Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffuse interstitial opacities bilaterally with no focal parenchymal consolidation . No pleural effusion or pneumothorax . Lung volumes are low , likely accentuating the cardiac contour . No pneumothorax .
    OUTPUT:
    
Diffuse increase in interstitial opacity in a patient with HIV is concerning for PCP ___ . Additionally , this increase in interstitial and pleural thickening likely represents interstitial edema .