title: [Cervical sympathetic chain schwannoma associated with parathyroid adenoma].
abstract: BACKGROUND
  Schwannoma is a rare benign tumor derived from nerve sheaths. When derived from the cervical sympathetic chain, it usually presents itself as an asymptomatic mass located in the posterior cervical region, at paravertebral level. Its diagnosis is not easy, usually requiring multiple imaging tests. Its differential diagnosis includes parathyroid adenoma.
  
  
  METHODS
  A new case of schwannoma of the cervical sympathetic chain in a patient with a synchronous overactive parathyroid adenoma is reported. This case adds to the sixty described in the literature, although to our knowledge no association between schwannoma and parathyroid adenoma has been reported to date.
  
  
  CONCLUSIONS
  Despite being a benign tumor, its treatment is a complete surgical resection. The most common complication after the surgery needed for these tumors is ipsilateral Horner syndrome.
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España. Electronic address: israel.manzanedo@salud.madrid.org.
authors.forename: Israel
authors.initials: I
authors.lastname: Manzanedo-Romero
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España.
authors.forename: Alejandro
authors.initials: A
authors.lastname: García-Muñoz-Najar
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España.
authors.forename: Débora
authors.initials: D
authors.lastname: Acín-Gándara
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España.
authors.forename: Lucía
authors.initials: L
authors.lastname: Carrión-Álvarez
authors.affiliation: Servicio de Diagnóstico por Imagen, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España.
authors.forename: María
authors.initials: M
authors.lastname: Urbasos-Pascual
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, España.
authors.forename: Fernando
authors.initials: F
authors.lastname: Pereira-Pérez
mesh_terms: D000236:Adenoma / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D005728:Ganglia, Sympathetic / Q000473:pathology / Q000601:surgery; D006258:Head and Neck Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006732:Horner Syndrome / Q000209:etiology; D006801:Humans; D006934:Hypercalcemia / Q000209:etiology; D049950:Hyperparathyroidism, Primary / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D010282:Parathyroid Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D016105:Parathyroidectomy; D011183:Postoperative Complications / Q000209:etiology; D014057:Tomography, X-Ray Computed
keywords: Adenoma paratiroideo; Cadena simpática cervical; Cervical sympathetic chain; Parathyroid adenoma; Schwannoma