Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear unchanged . There is confluent area of reticulation and mild volume loss with cuffed and perhaps dilated airways in the left lower lobe , new since the prior examination . Mild reticulation in the right costophrenic sulcus appears unchanged . There is no definite pleural effusion or pneumothorax . Small osteophytes are present along the thoracic spine .
    OUTPUT:
    
Focal new left basilar opacity in the left lower lobe , of uncertain chroncity , with suspected bronchiectasis involving the opacity . Either follow - up radiographs are recommended for surveillance or chest CT could be considered depending on the clinical situation to evaluate further .