Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle increase in opacity along the medial right lung base may be due to overlapping vascular structures although a subtle aspiration is not excluded in the appropriate clinical setting . No focal consolidation is seen elsewhere . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Subtle patchy opacity at the medial right lung base best seen on the frontal view may be due to overlap of vascular structures although underlying aspiration is not excluded in the appropriate clinical setting .