Prevertebral Abscess Revealing a Rare Foreign Body: A Case Report.

Background: Migrated foreign bodies in the prevertebral region represent a rare but potentially serious condition. This case underscores the importance of thorough visual and digital intraoperative exploration for successful foreign body retrieval and highlights the potential diagnostic and surgical challenges associated with migrated foreign bodies in the cervical region. Case report: A 77-year-old female patient presented with dysphagia following the intake of an Angiotensin-Converting Enzyme (ACE) inhibitor. Due to hemodynamic instability and laboratory findings that indicated multiple organ failure, a computed tomography (CT) scan was performed, which revealed a left-sided prevertebral abscess with gas collections. Because of persistently elevated and fluctuating inflammatory markers, multiple CT scans were performed, which showed an obliquely oriented, wire-like tubular structure approximately 30 mm in length, 5 mm in width and 1 mm in diameter in the prevertebral region of the previous abscess cavity. Eventually, after three surgical interventions-one transoral and two transcervical approaches-the foreign body could be identified and removed. Afterwards, the patient's inflammatory markers decreased and her dysphagia resolved. Conclusions: This case demonstrates that early diagnosis and timely removal of foreign bodies in the cervical space are essential to prevent complications such as retropharyngeal abscess formation or mediastinitis. A combination of careful clinical examination, endoscopic evaluation, and cross-sectional imaging-particularly CT scan-is crucial for accurate localization. Finally, this report highlights the importance of maintaining a high index of suspicion for migrated foreign bodies in patients presenting with persistent symptoms or unexplained cervical infections following suspected foreign body ingestion.