Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left lung is clear . However , there is subtle right infrahilar opacity which may be due to overlap of vascular structures and costochondral calcification , but underlying consolidation is not excluded . It is not well substantiated however , on the lateral view . The cardiac silhouette is top - normal to mildly enlarged . The aorta is calcified and tortuous .
    OUTPUT:
    
Subtle right infrahilar opacity may be due to overlap of vascular structures in costochondral calcification , but underlying consolidation is not excluded in the appropriate clinical setting . Finding is not well substantiated on the lateral view , however .