Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . Lung volumes are slightly low . There is a new wedge - shaped opacity within the posterior aspect of the left lower lobe , projecting over the spine on the lateral radiograph , possibly representing a pulmonary infarction given the patient 's history of pulmonary embolism ( as seen on CT from ___ ) . Band - like parenchymal opacity extending from the left hilum , at the level of the left upper lobe , is not significantly changed in appearance . A nodular right upper lung opacity projecting over the right second intercostal space , is slightly decreased in size compared to prior radiograph from ___ . The heart size is normal . The mediastinal contours are normal . A small left pleural effusion can not be excluded . There is no pneumothorax .
    OUTPUT:
    
1 . Wedge - shaped left lower lobe opacity , concerning for a pulmonary infarction , as seen on prior chest CTA . 2 . Decreased size of right upper lung nodular opacity , possibly infectious / inflammatory in nature , although a neoplastic process is certainly not excluded . Unchanged band - like opacities radiating from the left hilum , better evaluated on prior CT .