title: Endoscopic approach for a delayed post-traumatic ethmoidal mucocele: a technical note.
abstract: OBJECTIVE
  Delayed post-traumatic mucoceles are rare. We describe the surgical treatment of a post-traumatic ethmoidal mucocele with intra-orbital extension.
  
  
  METHODS
  A uninostril endoscopic endonasal approach (EEA) was performed. The access was contralateral to the lesion to provide a wider lateral view. After a large sphenoid and ethmoid sinuses opening, the collection was drained and the optic nerve precociously identified. The orbital roof was eroded and the frontal dura mater directly visible.
  
  
  CONCLUSIONS
  The uninostril contralateral approach allows a good exposure of the lateral fields and is conservative towards the nasal mucosa. A favorable skull base anatomy is the prerequisite for its efficacy.
authors.affiliation: a Department of Neurosurgery , University Hospital of Lausanne , Lausanne , Switzerland.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Messerer
authors.affiliation: a Department of Neurosurgery , University Hospital of Lausanne , Lausanne , Switzerland.
authors.forename: Giulia
authors.initials: G
authors.lastname: Cossu
authors.affiliation: a Department of Neurosurgery , University Hospital of Lausanne , Lausanne , Switzerland.
authors.forename: Roy Thomas
authors.initials: RT
authors.lastname: Daniel
mesh_terms: D000328:Adult; D006259:Craniocerebral Trauma / Q000150:complications; D004322:Drainage / Q000379:methods; D004388:Dura Mater / Q000033:anatomy & histology; D005005:Ethmoid Sinus / Q000601:surgery*; D006801:Humans; D008297:Male; D009078:Mucocele / Q000601:surgery*; D057605:Natural Orifice Endoscopic Surgery / Q000379:methods*; D009915:Orbit / Q000033:anatomy & histology; D019291:Skull Base / Q000033:anatomy & histology; D013100:Sphenoid Bone / Q000033:anatomy & histology
keywords: Ethmoidal mucocele; post-traumatic mucocele; endoscopic endonasal approach; transsphenoidal approach