Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pneumothorax . Small bilateral pleural effusions are new . The lungs are well - expanded . Right suprahilar , poorly defined round opacity has rapidly progressed since the recent CXR . Slight increased interstitial markings compared to the recent chest radiograph is also noted .
    OUTPUT:
    
1 . Rapid progression of complex right upper lobe opacity . Such rapid change favors an infectious process over neoplasm , but followup radiographs after antibiotic therapy are recommended to document resolution . If persistent , CT of the chest would be recommended 2 . Pulmonary vascular congestion . Bilateral interstitial opacities may reflect interstitial edema in this setting , but an atypical pneumonia is also possible 3 . Small bilateral pleural effusions