Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to ___ radiograph , postoperative alterations in the right hemi thorax are stable in appearance in this patient who is undergone previous wedge resections . Fibrotic lung disease previously attributed sarcoidosis also appear similar as well as a dominant left upper lobe nodule measuring 2 .3 cm , more fully characterized on recent CT of ___ . Lungs are otherwise similar in appearance to recent studies except for a worsening opacity in the left retrocardiac region . Heart size is normal , and intrathoracic lymphadenopathy is stable in appearance .
    OUTPUT:
    
No definite evidence of congestive heart failure . Left retrocardiac opacity could potentially represent a developing infectious pneumonia in the appropriate clinical setting .