title: [Intermittent swelling of the eyelid].
abstract: Mucoceles are benign mucous-containing cysts that can occur in the sinuses. They arise as a result of an obstruction of the sinus ostium. There is often a delay in diagnosis because symptoms are so variable.
  
  
  
  A 52-year-old woman had intermittent swelling of the eyelid. A CT scan of the sinuses showed a mucocele in the frontal sinus with breakthrough to the left orbit. Treatment consisted of marsupialisation by means of functional endoscopic sinus surgery with septum correction.
  
  
  
  Breakthrough of a mucocele to the orbit should be considered in the differential diagnosis in patients with an intermittent swelling of the eyelid.
authors.affiliation: Amphia Ziekenhuis, Breda.
authors.forename: T
authors.initials: T
authors.lastname: Nguyen
authors.forename: D
authors.initials: D
authors.lastname: Kuijpers
authors.forename: J
authors.initials: J
authors.lastname: Companjen
authors.forename: A
authors.initials: A
authors.lastname: Erceg
mesh_terms: D001762:Blepharitis / Q000000981:diagnostic imaging* / Q000209:etiology*; D003937:Diagnosis, Differential; D005260:Female; D005626:Frontal Sinus; D006801:Humans; D008875:Middle Aged; D009078:Mucocele / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D010254:Paranasal Sinus Diseases / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed