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 ___ . Status post right upper lobe central mass with metallic biopsy marker and plate atelectasis unchanged . Same holds for the moderate elevation of the right - sided diaphragm . The right - sided lateral pleural sinus remains blunted . Heart size is unchanged and unremarkable appearance of thoracic aorta . Left - sided hemithorax , normal pulmonary appearance as before . Frontal and lateral views are compared with specific attention to the amount of pleural density on the right base . Comparison made both on frontal and lateral view suggests a mild increase of the pleural density but hardly enough to warrant renewed thoracocentesis . It is therefore suggested to perform another followup examination with somewhat longer time interval .
    OUTPUT:
    
Stable chest findings , slight progression of right - sided pleural effusion is suggested .