Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , there is been interval development of a soft tissue density opacity projecting over the right hilum . Heart size and cardiomediastinal silhouettes are otherwise unchanged . No pulmonary vascular congestion or pulmonary edema . Lungs are fully expanded and clear . No pleural effusions or pneumothorax .
    OUTPUT:
    
Possible right hilar mass or lymphadenopathy . Recommend CT chest with contrast for further evaluation .