Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided demonstrating left chest wall Port - A - Cath with tip residing in the low SVC . No focal consolidation , effusion or pneumothorax is seen . A subtle nodular opacity projects over the left lower lung between ribs 8 and 9 posteriorly which could represent a nipple shadow , though a true pulmonary nodule can not be excluded . Consider repeat study with nipple markers . Otherwise , the lungs are clear . Cardiomediastinal silhouette is normal . No pneumothorax or effusion . Bony structures are intact .
    OUTPUT:
    
Nodular opacity projecting over the left lower lung may represent a nipple shadow . Recommend repeat radiograph with nipple markers .