Abstract: Objective To investigate the clinical manifestation, diagnosis, treatment, and operation of fishbone foreign body in deep neck. Methods A retrospective review of three patients who were treated for a fishbone foreign body in the deep neck. The relevant literature were reviewed to summarize their diagnosis and treatment experiences. Results A fishbone is one of the most common foreign bodies found in the upper gastrointestinal tract. Pharyngeal and esophageal foreign bodies are the most common emergency in the otorhinolaryngology(ear nose and throat(ENT))department. Sharp foreign bodies or foreign bodies with long residence time can often cause pharyngeal and esophageal mucosal damage and secondary infection. If they are not treated properly or not treated in time, foreign bodies can lead to serious complications. Therefore, it is very important to remove the foreign bodies as soon as possible. Conclusion We must be alert to the possibility of a fishbone foreign body entering the deep soft tissue of the neck, and appropriate imaging methods for the diagnosis and location of the foreign body must be selected. Surgery is the first choice of treatment for removing the fishbone foreign body.

Key words: Deep neck, Esophagus, Thyroid, Fishbone foreign body