Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , 2 vws Inspiratory volumes are slightly low . This may account for apparent slight enlargement of the cardiac silhouette . Within the limits of plain film radiography , no hilar or mediastinal enlargment is detected . Hazy increased opacity projecting over the lower lobe posteriorly is noted , but may be an artifact of underpenetration . No frank consolidation is seen and no ther focal opacities are seen . No CHf , effusion , or pneumothorax is detected . No localizing history for the rib pain is available . Allowing for this , no rib fracture is detected on these lung - technique films . On the lateral view , the sternomanubrial junction appears slightly prominent and poorly corticated . If there is focal tenderness , then this could suggest slight distraction of the sternomanubrioial joint , presumably post-traumatic . Small rounded lucencies in the right glenoid could represent screw tracks from prior surgery or , alternatively , subchondral cysts . There is nonvisualization of the right clavicular companion shadow , which can be seen in the setting of right supraclavicular lymphadenopathy . It is otherwise of doubtful clinical significance .
    OUTPUT:
    
1 ) Increased density projecting over the lower lobe posteriorly is likely accentuated by underpenetration . No definite infiltrate . The lungs are otherwise clear . 2 ) Mild enlargement of cardiac silhouette . However , this appears to be aaccentuated by low inspiratory volumes . 3 ) Prominence of the sternomanobrial junction . If the patient has focal tenderness in this location , this would be concerning for traumatic injury to the sternomanubrial joint . IN the absence of focal tenderness , is likely represents normal variation . 4 ) No pneumothorax detected . No obvious rib fracture .