Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable radiograph of the chest demonstrates apical lordotic positioning and low lung volumes . Allowing for these limitations , again seen is elevation of the left hemidiaphragm with a stable - appearing left retrocardiac opacity . The right lung appears clear . No significant pulmonary edema . No pneumothorax . Cardiomediastinal and hilar contours are unremarkable .
    OUTPUT:
    
Limited radiograph secondary to patient positioning without evidence of pulmonary edema .