title: [Cystic mediastinal schwannoma appended to the vagus nerve].
abstract: BACKGROUND
  Schwannomas are a form of rare tumor, arising from neural tissue and representing 2 % of mediastinal tumors. They are usually located in the posterior mediastinum, most often in the paravertebral gutters and typically appended to intercostal nerves.
  
  
  METHODS
  We report two cases of unusual mediastinal schwannomas, appended to the vagus nerve. The schwannoma was located in the subcarinal region in the first case and in the right para-tracheal region in the second case. The lesions were thought to be bronchogenic cysts preoperatively in both cases because of a cystic appearance on preoperative CT scan and endobronchial ultrasonography. A surgical approach was adopted to remove the tumors. Video-assisted thoracoscopy was used in one case and robotic-assisted surgery in the second case, without any complication, allowing for complete resection and to establish a certain pathological diagnosis.
  
  
  CONCLUSIONS
  Despite this location and cystic presentation being unusual, schwannoma should be considered as a possible cause of cystic lesions in the mediastinum. Minimally invasive surgery allows for complete resection and definitive pathological diagnosis.
authors: Département thoracique, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
authors: J
authors: J
authors: Dahdah
authors: Département d'anatomie pathologique, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
authors: P
authors: P
authors: Validire
authors: Département thoracique, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
authors: M
authors: M
authors: Grigoroiu
authors: Département d'imagerie médicale, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
authors: S
authors: S
authors: Lenoir
authors: Département thoracique, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
authors: D
authors: D
authors: Gossot
authors: Département thoracique, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France. Electronic address: jean-baptiste.stern@imm.fr.
authors: J-B
authors: JB
authors: Stern
mesh_terms: D000368:Aged; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008482:Mediastinum / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D065287:Robotic Surgical Procedures; D014630:Vagus Nerve / Q000473:pathology* / Q000601:surgery; D020421:Vagus Nerve Diseases / Q000175:diagnosis* / Q000601:surgery
keywords: Affections du nerf vague; Chirurgie robotique; Cytoponction sous écho-endoscopie; Endoscopic ultrasound-guided fine needle aspiration; Kyste médiastinal; Mediastinal cyst; Robotic surgery; Schwannoma; Schwannome; Vagus nerve disorders