Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left subclavian vascular catheter remains in standard position , and cardiomediastinal contours are unchanged . A subtle confluent area of opacity has developed in the right infrahilar region , and is accompanied by a small right pleural effusion . Left lung and pleural surfaces are clear .
    OUTPUT:
    
Subtle right infrahilar opacity , which may represent a new focus of infection in the setting of febrile neutropenia . Dr . ___ has been notified of this finding by telephone at 9 :30 a .m . on ___ at the time of discovery .