Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views were reviewed . In the upper aspect of the left hilus around the pulmonary vessels there is an oval zone of increased density measuring 9 x 17 mm that is likely a vascular structure . Otherwise , the lungs are clear without focal consolidation , pulmonary edema , vascular congestion , pleural effusion or pneumothorax . The cardiac contours are normal .
    OUTPUT:
    
1 . An oval density measuring 9 x 17 mm adjacent to the upper aspect of the left hilus is likely a vascular structure , however , to be cautious and rule out other origins , short term follow up with oblique views in ___ weeks is recommended . 2 . No radiographic evidence of pneumonia . Comment : Findings were communicated to Dr . ___ by Dr . ___ ___ at 10 :00 AM on ___ , 10 minutes after the time of discovery .