Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC tip terminates within the mid SVC . Heart size is normal . Aorta remains mildly tortuous . Mediastinal and hilar contours are stable . Linear opacity in the left lung base is compatible with subsegmental atelectasis . Remainder of the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is seen .
    OUTPUT:
    
No radiographic evidence for pneumonia .