Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest were obtained with the patient in the upright position . These images are extremely limited due to underpenetration . There is no evidence seen of a new pneumonia . Heart size is unchanged and within normal limits . There is some elongation of the thoracic aorta but no local abnormalities . There is no pulmonary vascular congestion . A prosthesis is seen in the left humerus . Soft tissue consistent with morbid obesity is identified which limits exam interpretation due to underpenetration . The lateral image shows there is no pleural effusion .
    OUTPUT:
    
No evidence of a new pneumonia on this extremely limited exam .