A rare case of Cholesterol Granuloma as a complication of onyx Embolization for AV-Malformation

Introduction Cholesterol granuloma (CG) represents a histological classification indicative of a foreign body reaction characterized by giant cells responding to cholesterol crystals and hemosiderin, typically resulting from erythrocyte rupture. These granulomas are rare, benign cystic lesions, primarily localized within the temporal bone, most commonly at the petrous apex of the skull.