PMC9893080_01
Chest computed tomography images showing a high-density nodule in the right main bronchus, accompanied by atelectasis in the middle and lower lung lobes (left image: axial view; right image: coronal view).
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Chest computed tomography (CT) revealed a high-density nodule at the opening of the right main bronchus, accompanied by atelectasis in the middle and lower lung lobes (Figure 1).
Flexible bronchoscopic images showing that the opening of the bronchus of the right middle lung lobe is covered and obstructed with a white soft tissue mass. The mass protruded into the right main bronchus and resulted in stenosis of the right main bronchial lumen (left image). A high-frequency electrosurgical snare, endobronchial cryosurgery, and APC were used with under rigid bronchoscopy (right image).. APC, argon plasma coagulation.
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The tissue protruded into the right main bronchus and resulted in stenosis of the right main bronchial lumen (Figure 2).
Postoperative histopathology showing that the tumor is composed mainly of cell-dense Antoni A tissue arranged in a palisade, with Verocay body-like structures. Focal Antoni B areas are seen, with few cells and a disordered arrangement (left image; HE stain, x400). Immunohistochemistry was positive for S-100 (central image; x100) and SOX10 (right image; x100).. HE, hematoxylin and eosin.
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Immunohistochemistry was positive for S-100 and SOX10 (Figure 3) and negative for smooth muscle actin (SMA) protein antibody.
Follow-up computed tomography images after the operation showing that the right main bronchus is unobstructed, and the bronchus of the lower right lung lobe is open. A high-density shadow is visible in the right middle lung lobe bronchus, accompanied by atelectasis (left image: axial view; right image: coronal view).
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A high-density shadow was seen in the right middle lung lobe bronchus, accompanied by atelectasis (Figure 4).
Bronchoscopic images showing that the right main bronchus is unobstructed (left image). The opening of the bronchus of the right lower lung lobe is exposed, and the opening of the bronchus of the right middle lung lobe is still obstructed after bronchoscopic interventional surgery (right image).
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No new mass was identified in the right lower lobe (Figure 5).