A case of intranasal coil extrusion after embolization for postoperative haemorrhage of skull base chondroma

Abstract Skull base chondroma is a rare benign tumour. Endoscopic transnasal surgery is the first-line minimally invasive treatment. Intraoperative internal carotid artery injury is a severe complication; emergency embolization can be lifesaving but carries a risk of delayed coil migration or extrusion. We report a 36-year-old Han ethnicity female patient who underwent endoscopic transnasal resection for skull base chondroma. Postoperative nasal haemorrhage required emergency internal carotid artery embolization, which resulted in left eye blindness. Six years later, the embolization coil extruded repeatedly from the nasal cavity. The patient was cured by endoscopic removal of the foreign body, skull base repair, and nasal adhesiolysis. The aetiology and management of this rare complication are discussed with a literature review.