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 PA and lateral chest examination of ___ . Heart size is unchanged and remains within normal limits . Unremarkable appearance of thoracic aorta . No mediastinal abnormalities are present . The pulmonary vasculature is not congested . Deep inspiration results in some flattening of the pleural sinuses , but there is no evidence of pleural effusion in the lateral or posterior sinuses as they are free . There is now a moderately sized poorly delineated parenchymal infiltrate on the left lung base obliterating partially the apical cardiac contour . The lateral view confirms the infiltrate to be located in the peripheral lingula of the left upper lobe located quite anterior and low which matches well the description of the positive findings on physical examination .
    OUTPUT:
    
Acute new infiltrates in left upper lobe lingula . No other new abnormalities . Followup examination after successful treatment in one to two weeks is recommended .