Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased focal opacification demonstrated within the left lower lobe in setting of known transbronchial biopsy is likely related to focal hemorrhage superimposed on known area of focal opacification / though is out of proportion to expected . There is no pneumothorax or pleural effusion . Bronchiectasis of the left lower lobe is unchanged . The cardiomediastinal and hilar contours are stable demonstrating mild tortuosity of the thoracic aorta . Heart size is within normal limits . Incidentally noted is a benign bone island demonstrated within the left humeral head .
    OUTPUT:
    
Interval increase in opacification in the left lower lobe that in the setting of known transbronchial biopsy is likely related to hemorrhage superimposed on the known previously noted focal opacification , though aspiration and interval progression of the disease process are also possibilities . No evidence of pneumothorax .