Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A homogeneous , peripheral 4 x 5 cm , mass - like opacity , occupying some of the posterior and adjacent anterior segments of the right upper lobe rests on the major and minor fissures , and roughly spherical on the frontal view . It has an irregular margin superiorly ; medially it is difficult to separate from the juxta hilar tissue in the upper lobe . Enlargement of the right hilum and widening of the right paratracheal stripe are most likely due to adenopathy . There is no volume loss to indicate appreciable bronchial obstruction , but some impingement may well be present . Followup chest radiographs are recommended in 2 weeks to document improvement which should be seen with pneumonia . In the absence of improvement , or if the findings worsen , CT scanning would be indicated at that time , and should be scheduled contingently , in advance , to avoid delay , in order to assess possible malignancy . There is no pleural effusion . The right lung apex , right base , and left lung are generally clear , but , on the lateral view , projecting over the lowest to visible thoracic vertebral bodies is a 2 cm wide opacity could be a small , lower lobe , lung nodule or an osteophyte on end . Heart is normal size .
    OUTPUT:
    
1 . Large right upper lobe pneumonia , or lung mass , and ipsilateral hilar and mediastinal adenopathy . Suggest repeat chest radiographs in 2 weeks , with chest CT scheduled to follow unless there is considerable improvement . Therefore the chest radiograph needs to be viewed by the radiologist before the patient leaves the chest radiography area . 2 . Possible basal lung nodule to be re-examined on subsequent studies .