Foreign Body Airway

Which of the following is the most common site of lodgement for foreign bodies in the larynx and trachea in children?

A 28-year-old woman presents with a 2-week history of progressive dysphagia and throat discomfort. She denies any acute aspiration event. On examination, the larynx appears normal on indirect laryngoscopy, but she has persistent symptoms. Imaging is suspected to rule out a radiolucent foreign body or other pathology. Which investigation is most appropriate for visualizing a non-radiopaque foreign body in the hypopharynx and cervical esophagus?

A 5-year-old girl is brought to the ENT clinic 48 hours after suspected aspiration of a button battery. She is currently asymptomatic with normal stridor and no respiratory distress. Neck X-ray shows a radiopaque disc-shaped object at the level of the subglottis. What is the most appropriate next step in management?

A 5-year-old girl presents with a 2-week history of recurrent cough and low-grade fever. Flexible laryngoscopy shows a smooth, grayish-white object lodged at the level of the false vocal cords. Which finding best distinguishes an organic foreign body (peanut) from an inorganic foreign body (plastic bead) in the larynx?

A 3-year-old child presents to the emergency department with acute onset of coughing and stridor after playing with peanuts. On examination, there is unilateral decreased air entry on the right side with hyperinflation of the right hemithorax. Which investigation is most appropriate to confirm the diagnosis and localize the foreign body?