title: [Trigeminal neuralgia secondary to petrous endostosis].
abstract: Arterial neurovascular compression is hypothesised to be the main cause of primary trigeminal neuralgia. Although it is the most common cause, other pathologies, such as tumours in the cerebellopontine angle, can cause trigeminal pain. We report a case of a 44-year-old female patient with right trigeminal neuralgia without satisfactory response to medical treatment. Cerebral MRI showed no structural injuries. During microvascular decompression of the trigeminal nerve, endostosis of the internal aspect of the petrous bone was found to compress the trigeminal nerve. The pain disappeared completely in the early postsurgical period, after the complete drilling of the endostosis and microvascular decompression. The patient remains asymptomatic one year later. Endostosis of the petrous bone is a rare cause of trigeminal neuralgia. A proper review of preoperative studies would enable the definitive surgical approach to be optimised.
authors.affiliation: Servicio de Neurocirugía, Complejo Hospitalario Universitario de Cáceres, Cáceres, España. Electronic address: jacinto.mata@gmail.com.
authors.forename: Jacinto
authors.initials: J
authors.lastname: Mata-Gómez
authors.affiliation: Servicio de Neurocirugía, Complejo Hospitalario Universitario de Cáceres, Cáceres, España.
authors.forename: Manuel
authors.initials: M
authors.lastname: Royano-Sánchez
authors.affiliation: Sección de Neurología, Hospital Virgen del Puerto, Plasencia, Cáceres, España.
authors.forename: Macarena
authors.initials: M
authors.lastname: Bejarano-Parra
authors.affiliation: Servicio de Neurocirugía, Complejo Hospitalario Universitario de Cáceres, Cáceres, España.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Gilete-Tejero
authors.affiliation: Servicio de Neurocirugía, Complejo Hospitalario Universitario de Cáceres, Cáceres, España.
authors.forename: María
authors.initials: M
authors.lastname: Rico-Cotelo
authors.affiliation: Servicio de Neurocirugía, Complejo Hospitalario Universitario de Cáceres, Cáceres, España.
authors.forename: Marta
authors.initials: M
authors.lastname: Ortega-Martínez
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D061145:Microvascular Decompression Surgery; D009999:Ossification, Heterotopic / Q000150:complications* / Q000601:surgery; D010579:Petrous Bone; D014277:Trigeminal Neuralgia / Q000209:etiology*
keywords: Abordaje retrosigmoideo; Cerebellopontine angle; Descompresión microvascular; Endostosis petrosa; Microvascular decompression; Neuralgia del trigémino; Petrous endostosis; Retrosigmoid approach; Trigeminal neuralgia; Ángulo pontocerebeloso