Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal , nodular opacity at the cardiac apex , likely representing a nipple shadow , the heart size , mediastinum and hila are normal . There is no pleural effusion and no pneumothorax . There is no evidence of pneumonia .
    OUTPUT:
    
No evidence of pneumonia . Left cardiac apex nodular opacity likely represents nipple shadow , repeat images with nipple markers might be considered .