Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The heart size remains within normal limits . Unchanged presentation of thoracic aorta , which is mildly widened and elongated but without local contour abnormalities . The pulmonary vasculature is not congested . Irregular distribution of the pulmonary vessels in the periphery is consistent with COPD . Furthermore , one can identify the surgical clips in the lower portion of the right hilum as the patient is status post right lower lobectomy in the past . Mild degree of pleural adhesion on the right lung base , but no evidence of pleural effusion as the posterior pleural sinuses are free . Comparison with the next preceding examination does not disclose the presence of new acute infiltrates .
    OUTPUT:
    
Unchanged status compatible with COPD but no evidence of new acute discrete pulmonary infiltrates during this phase of suspicious exacerbation .