{Reference Type}: Case Reports {Title}: A Foreign Body Aspiration Leading to Pneumothorax: A Case of Airway Emergency. {Author}: Ahmad Fahmi AK;Habib Rahman AF;Hishamuddin AH;Arasu K;Mohan Singh AS; {Journal}: Cureus {Volume}: 16 {Issue}: 3 {Year}: 2024 Mar 暂无{DOI}: 10.7759/cureus.56489 {Abstract}: Foreign body (FB) aspiration is a matter that should not be taken lightly. The presence of a foreign object might lead to hazardous complications, particularly in the pediatric population. These complications depend on the type and location of the aspirated object as the tracheobronchial tree has a very small diameter, and foreign bodies become stuck in the upper airways of children, causing stridor and sudden difficulty in breathing. Impaction of a foreign body in the right bronchial tree is more frequent due to the relatively straighter alignment of the right mainstem of the trachea, as opposed to the left side. Herein, we present a 10-year-old Malay boy who accidentally aspirated a pencil cap. An urgent computed tomography (CT) of the thorax revealed a suspicious intraluminal FB in the bronchus leading to pneumothorax and pneumomediastinum. He underwent a right bronchoscopy and a successful FB removal.