Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is mildly enlarged . Mediastinal contour is unchanged with atherosclerotic calcifications noted at the aortic knob . Crowding of the bronchovascular structures is present with mild pulmonary vascular congestion . Ill - defined mass within the left lower lobe is re - demonstrated , but poorly assessed . Patchy retrocardiac opacity likely reflects atelectasis . No large pleural effusion or pneumothorax is present . Deformity of the left proximal humerus suggest remote fracture . Irregularity of the right - sided ribs is better assessed on the previous radiograph , concerning for osseous metastases .
    OUTPUT:
    
Mild pulmonary vascular congestion and low lung volumes . Left lower lobe lung mass is not well assessed on the current exam . Retrocardiac patchy opacity , likely atelectasis . Irregularity of the right - sided ribs concerning for osseous metastases .