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case_images: A: Chest CT scan on July 2021: Lung window of the upper lobes (with visible irregularity in the tracheal wall). B: Chest CT scan on July 2021: Mediastinal window of the upper lobes (at the same level, showing slight thickening of the airway mucosa). C: Chest CT scan on July, 2021, a lesion in the middle lobe of the right lung. D: Chest CT scan on April, 2022, a lesion in the middle lobe of the right lung.
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case_images: Additionally, there was thickening and adhesion of the pleura on both sides.(Figure 1 (A)-(C))Bronchoscopy performed on July 20, 2021 revealed no apparent abnormalities in the visible range of the larynx. On April 20, 2022, a follow-up chest CT scan revealed a reduced lesion in the right middle lobe compared to July 2021 (Figure 1(D)).
case_images: July 20, 2021, electronic bronchoscopy examination. A: trachea. B: carina. C: Left upper and lower lobe junction. D: right bronchus.
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case_images: No apparent abnormalities were observed in the other branches (segments and subsegments) of the bilateral bronchi (Figure 2).
case_images: Airway mucosal pathology. A: Mild local squamous epithelial hyperplasia. B: Partial mucosal hyperkeratosis.
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case_images: The results revealed chronic inflammatory changes in the mucosal tissue, with mild squamous epithelial hyperplasia and areas of excessive keratinization in some regions. (Figure 3).
case_images: March 31, 2022: electronic bronchoscopy examination. A: trachea, B: carina, C: left bronchus, D: right bronchus.
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case_images: No obvious abnormalities were observed within the range of the left bronchus (Figure 4).