Primary intratracheal schwannoma misdiagnosed as severe asthma in an adolescent: A case report

Figure 1 Chest X-ray showing thickness of texture in both lungs.

Figure 2 Chest computed tomography A: At the plane of the T2/T3 vertebrae; B: A coronal reconstruction showing a nodular mass in the lumen of the trachea.

Figure 3 Bronchoscopy image showing a mid-tracheal, pedicled dumbbell-shaped mass with small blood vessels on its surface.

Figure 4 Pathological and immunohistochemical images. A: Showing long, shuttle-shaped tumor cells with an uneven distribution and fenestrated arrangement in some areas (hematoxylin and eosin, magnification, × 100); B: Positive immunohistochemical staining of S-100 protein (magnification, × 100).

Figure 5 Bronchoscopy images. A: Removal of the mass by high-frequency electrosurgery; B: Residual anatomy after mass removal.

Figure 6 Bronchoscopy image showing slight scarring of the trachea at the site of the original lesion.