Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment of the lungs is somewhat limited due to exclusion of the extreme left lung base laterally from the radiograph . With this limitation in mind , the imaged portions of the lungs are clear . Heart size , mediastinal and hilar contours are normal . There are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
No radiographic evidence of pneumonia , but periphery of left lower lung has been excluded from the radiograph . If warranted clinically , the patient could return for repeat radiograph of this region at no additional charge .