Figure 4.

A representative case of virtual-assisted lung mapping (VAL-MAP) with faint markings. A, Target nodule located in the left upper lobe (white arrow). B, One marking identified as faint consolidation on computed tomography (CT) scan after VAL-MAP (black arrow). C, Another marking identified as faint bronchiectasis on CT scan after VAL-MAP (black arrow). D, Using VAL-MAP, finding the blue-colored marking with indigo carmine (encircled by the white line) intraoperatively is difficult because of anthracosis on the surface of the lung.