Nonasthmatic eosinophilic bronchitis in an ulcerative colitis patient – a putative adverse reaction to mesalazine: A case report and review of literature

Figure 1 Upper airway mucosa lesions. A: Axial computed tomography (CT) (lung window) showing circumferential irregular thickening of the tracheal wall - subglottic region; B: Axial CT (lung window) demonstrating the presence of a tracheal mucosa nodule-carina level.

Figure 2 Hematoxylin-eosin stained tracheal mucosal biopsies demonstrating the presence of eosinophil-rich infiltrate. A: Magnification 25 ×; B: Magnification 100 ×; C: Magnification 200 ×; D: Magnification 400 ×.