Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs again demonstrate bilateral perihilar and left lower lobe opacities , similar in distribution compared to ___ but increased compared to the most recent chest radiograph on ___ . Mild blunting of the left costophrenic angle with obscuration of the left hemidiaphragm is suggestive of a trace pleural effusion .
    OUTPUT:
    
1 . Bilateral perihilar and left lower lobe opacities , similar in distribution compared to ___ but increased compared to the most recent chest radiograph from ___ . In this setting of the patient 's history of HIV , there is a wide differential which includes infection such as PJP , progressive interstitial disease , and pulmonary edema . If warranted clinically , CT can be obtained for further evaluation . 2 . Likely small left pleural effusion .