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Neck-mediastinum foreign body (FB) is a common emergency in otorhinolaryngology head and neck surgery departments, and it can be lethal. We present a case of an uncommon foreign body in the neck-mediastinum. The FB was metallic and about 12 cm long. A 74-year-old male accidentally swallowed a metallic FB that lodged in his throat for > 3 days. The intake of the object was associated with smoking a peace pipe, and was an indication for surgery. Aerodermectasia was observed in the neck upon physical examination, and a high-density foreign body was found in the neck-mediastinum through cervicothoracic computed-tomography (CT) scan. Electronic laryngoscopy showed a white pseudo-membrane adhering to the surface of the bilateral piriform fossa in the right laryngeal vestibule, and the root of the tongue, and mucosa were swollen. Cervicothoracic CT revealed dense shadows in the neck-mediastinum. However, electronic laryngoscopy showed no FB in the larynx or piriform fossa. The metal FB was removed by surgery via the parapharyngeal space approach instead of endoscopy. After preoperative assessment and preparation, we successfully removed the metal FB from the neck-mediastinum via the parapharyngeal space approach. The patient was doing well at one-month follow-up. Neck-mediastinum FB is an emergency but rare case necessitating otorhinolaryngology head and neck surgery. It can easily lead to mediastinal and lung infection; given its location in the body, it may lead to aortic arch rupture if not handled promptly. [ABSTRACT FROM AUTHOR]