| The conducting portion of the respiratory system includes the nasal cavity, paranasal sinuses, nasopharynx, larynx, trachea, and bronchi. |
| Emmprin has been found immunohistochemically in ciliated cells of normal bronchi and bronchi affected by squamous cell carcinoma. |
| We evaluated the tracheal wall, whereas previous reports used bifurcation specimens from lobar or segmental bronchi. |
| Additionally, the bronchi, trachea, and larynx demonstrated generalized erythema of the mucosa with overlying thin yellow mucus. |
| The larynx, trachea, and bronchi exhibited extensive squamous metaplasia of the mucosa with reactive atypia. |
| The saccular or cystic form is the most severe type and is characterized by a ballooning of the bronchi with fluid-filled, sac-like dilatations. |
