Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bronchovascular markings are accentuated by low lung volumes . There are also diffuse parenchymal nodular opacities similar in appearance to prior radiograph , and were better characterized on the ___ CT scan . The left lung base opacity is not significantly changed . No pneumothorax . Heart size is top - normal . Right chest tube unchanged in position . Minimal subcutaneous emphysema along the right lateral chest wall , improved from yesterday .
    OUTPUT:
    
Diffuse parenchymal and peribronchial nodular opacities which are unchanged and better characterized on the CT scan from ___ .