Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable upright view the chest provided . There is improved positioning and as result , the right hilum appears normal . Otherwise unremarkable . Lungs are clear without signs of pneumonia or edema . No large effusion or pneumothorax . Cardiomediastinal silhouette appears stable . Aortic calcifications noted . A round ossific density projecting inferior to the left shoulder is chronic .
    OUTPUT:
    
Resolved opacity at the right hilum , therefore likely positional .