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 two chest examinations of ___ and ___ . The heart size remains within normal limits . No typical configurational abnormality is seen . Similar as on previous examinations , there is a mild degree of S - shaped scoliosis with right - sided prominence in the lower thoracic and left - sided prominence in the upper lumbar spine area . The course of the descending aorta follows curvature but is otherwise unremarkable . No local contour abnormalities of the aorta identified . The pulmonary vasculature is not congested . No signs of acute or chronic parenchymal infiltrates are present and the lateral and posterior pleural sinuses are free . No pneumothorax in apical area . A single metallic surgical clip is identified to the right of the midline overlying the central portion of the first rib , most likely represents local surgery or node biopsy in the past . When comparison is made with the previous examinations , a local pulmonary parenchymal infiltrate of bronchopneumonic character was seen adjacent to the apical portion of the heart on the left lung base . On followup examination performed on ___ , this density had resolved almost completely . On the present examination , some linear scar formations can be identified but no acute pneumonic process remains .
    OUTPUT:
    
Stable chest findings . No evidence of cardiac enlargement , pulmonary congestion or acute infiltrates .