Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: . Cardiomegaly is moderate , unchanged . Subtle opacity in the right lung base partially obscures the peripheral right hemidiaphragm and a small portion of the right heart border . There is no pneumothorax or pleural effusion . Mild elevation of left hemidiaphragm is unchanged .
    OUTPUT:
    
Subtle right basilar opacity , which could potentially represent an early focus pneumonia in the appropriate clinical setting . Aspiration is an additional consideration in the setting of altered mental status . Short - term followup radiographs may be helpful . .