Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding PA and lateral chest examination of ___ . Mild cardiac enlargement is present with a relative prominence of the left ventricular contour to the left , posteriorly . This finding in conjunction with the moderately widened and elongated thoracic aorta consistent with longstanding systemic hypertension . The pulmonary vasculature , however , is not congested . There is no evidence of any pleural effusion on either side . On previous examination identified triangular - shaped density adjacent to the right cardiac contour consistent with and interpreted as representing collapse of the right middle lobe medial segment has markedly improved , both on the frontal as well on the lateral view . There remains a mild degree of relative under aeration in this area , but progression into total atelectasis in this area , possibly related to bronchostenosis or inclusion can not be identified . No other new pulmonary abnormalities are seen and no pneumothorax is present in the apical area .
    OUTPUT:
    
Improvement of segmental atelectasis in right middle lobe area as observed on chest examination six weeks ago . Unless patient 's clinical symptomatology has deteriorated , I do not think that one needs to perform a CT scan at this time in this elderly female patient . A further followup chest examination in a few weeks may be advisable to document complete normalization of the observed findings in the right middle lobe .