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| No. | Age | Gender | Clinical manifestations | Physical signs | Pulmonary function tests | Lung CT | Bronchoscope examination results | Pathological results |
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| 1 | 54 | Male | Cough, expectoration, and fever | Negative | Mild obstruction | The walls of trachea and bronchus were thickened, and the right main bronchus was collapsed and narrow | Nodular tuberositas of trachea and right main bronchus and crevice stenosis of the right main bronchus | Chronic inflammation of mucous membrane (right main bronchus) with visible bone tissue |
| 2 | 54 | Male | Cough and expectoration | Negative | Within normal limits | Bronchiectasis in the middle lobe of the right lung and multiple nodular shadows in the right lung | Multiple nodular tuberositas of trachea, carina, and left and right main bronchi | Chronic inflammation of mucous membrane (right main bronchus) with partial ossification |
| 3 | 41 | Male | Cough, expectoration, chest tightness, and shortness of breath | Negative | Within normal limits | Bronchiectasis in the middle lobe of the right lung, thickening of the trachea wall, and multiple circular calcification of the main bronchial tube wall (Figure 1) | Nodular tuberositas of left and right main bronchi, left lingual lobe, right upper lobe, and right middle lobe bronchi | Bronchial mucosa (right main bronchus) was infiltrated by acute and chronic inflammatory cells, and bone tissue with calcification can be seen partially |
| 4 | 52 | Male | Cough and expectoration hemoptysis | Negative | Mild obstruction | Flocculent shadow of the right middle lobe and left lingual lobe | Nodular tuberositas of the trachea, left and right main bronchus, and right middle bronchus (Figures 2(a) and 2(b)) | (Left upper and lower lobe cristae) partial squamous cells on the bronchial mucosa epithelium, a large number of lymphocytes, plasma cells, and partial ossification (Figure 2(c)) |
| 5 | 41 | Male | Cough and expectoration hemoptysis | Negative | Mild restriction | Bronchiectasis of both lungs with changes like the tree bud | Nodular tuberositas of the trachea, left and right main bronchi | Chronic inflammation of mucous membrane (right main bronchus) with mesenchyma and ossification |
| 6 | 53 | Male | Cough, expectoration, chest tightness, chest pain | Negative | Mild obstruction | Thickening of the trachea and right main bronchus wall and multiple ring calcification shadow | Nodular tuberositas of the trachea and right main bronchi | Chronic inflammation of mucous membrane (right main bronchus) with partial ossification |
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