Management of an Unusual Intranasal Foreign Body Abutting the Cribriform Plate: A Case Report and Review of Literature.

A 35-year-old man with history of schizophrenia presented 3 weeks after placing a screw in his right nostril. Initial imaging showed a screw in the right ethmoid sinus with the tip penetrating the right cribriform plate. On exam, the patient was hemodynamically stable with purulent drainage in the right nasal cavity but no visible foreign body. While most nasal foreign bodies occur in children and are generally removed at the bedside, intranasal foreign bodies in adults tend to require further assessment. The foreign body in this case was concerning for skull base involvement and the patient was brought to the operating room (OR) with neurosurgery for endoscopic sinus surgery (ESS) and removal of foreign body. The screw was removed and the patient recovered with no signs of cerebrospinal fluid (CSF) leak postoperatively. Any concern for skull base or intracranial involvement should call for a full evaluation of the mechanism of injury and intervention in a controlled environment.