Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs show a left upper lobe opacity with air bronchograms concerning for pneumonia . However , given the clinical history of hemoptysis , a pulmonary embolism can not be ruled out . Cardio mediastinal and hilar contours are unremarkable . A tortuous descending aorta is incidentally noted . No pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Left upper lobe opacity , new since ___ . Given clinical history of hemoptysis , differential includes pneumonia and pulmonary embolus for which additional imaging with chest CT is recommened . Attempted to call ordering physician , ___ . ___ and was put through to answering service . Awaited fifteen minutes after page without answer . Contacted primary care physician , ___ . ___ , with urgent findings who communicated he would attempt to contact patient . Reported findings into the urgent communications InfoRadiology physician porta___ . This was all completed by Dr . ___ ___ ___ : 15 and 17 : 30 at the time findings were discovered .