[Optic Neuropathy Secondary to Compression by the Internal Carotid Artery Concomitant with an Inflammatory Granuloma:A Case Report].

A 77-year-old man presented with a 6-month history of progressive right optic neuropathy secondary to compression by the ipsilateral internal carotid artery(ICA). We performed anterior clinoidectomy and optic canal unroofing. Subsequently, we wrapped the ICA with a polytetrafluoroethylene tape, pulled the vessel laterally, and sutured the tape to the dura mater at the anterior skull base for optimal decompression. An inflammatory mass lesion was observed around the ICA, which led to further compression of the optic nerve. Histopathological examination of the resected specimen showed an inflammatory granuloma. The patient's visual field deficit showed partial improvement postoperatively. Transposition using a tape might be an effective surgical alternative for compressive optic neuropathy.