Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No previous plain radiographs . The nodular opacification at the right base medially seen on the scout radiograph and CT is again suggested on the frontal view . It is somewhat difficult to appreciate on the lateral projection , but appears to be at the mid chest level . The cardiac silhouette is mildly enlarged but there is no evidence of vascular congestion or pleural effusion .
    OUTPUT:
    
Nodular density at the right base medially , not as well seen as on CT .