Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is new vague increased density within the left lung base . The remainder of the lungs appear clear . There is no vascular congestion , edema , or large pleural effusions . Cardiomediastinal and hilar contours are within normal limits . A PICC line terminates in the upper superior vena cava .
    OUTPUT:
    
New vague patchy left basilar opacity which could be seen with atelectasis or potentially pneumonia in the appropriate setting . Follow - up radiographs including PA and lateral views are recommended for further clarification .