Foreign body within sphenoid sinus: multidetector-row computed tomography (MDCT) demonstration.

Trans-nasal sphenoid sinus foreign body is a rare condition. We report a case of trans-nasal gun bullet within the sphenoid sinus with breach of the floor of the sella turcica. A 42-year-old soldier presented a few weeks after a gun battle with a history of headache. The skull x-ray demonstrated a foreign body in the region of sphenoid sinus and sella. Multidetector-row CT with multiplanar reformats demonstrated a bullet within the sphenoid sinus with its tip penetrating into the sella turcica. A few days later the patient coughed up the bullet as it came out spontaneously without any intervention. This is perhaps the unique occurrence of such a foreign body.