Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of pneumonia . There is a nodular opacity adjacent to the left hilum , measuring 7 mm with an adjacent branching structure which appears to represent a vessel . The cardiomediastinal silhouette and hilar contours are normal . The pleural surfaces are normal without effusion or pneumothorax .
    OUTPUT:
    
Nodular opacity adjacent to the left hilum , which could possibly represent a vascular anomaly such as AVM or superimposition of normal vessels . Further evaluation can be obtained with 15 degree shallow oblique views or CT .