Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 15 :29 is submitted .
    OUTPUT:
    
The right hemidiaphragm is slightly elevated . No focal airspace consolidation is seen to suggest pneumonia . No large effusions or pneumothorax . No evidence of pulmonary edema . Overall cardiac and mediastinal contours are stable . Curvilinear tubular opacity overlying the right upper lung in the fourth intercostal space which has the imaging appearance of a catheter fragment ; however this may be external to the patient . Correlation with patient 's clinical history and followup imaging should be considered as needed .