title: [An unusual cause of sinusitis].
abstract: BACKGROUND
  Larvae of the sheep botfly (Oestrus ovis) normally have sheep or goats as host. In humans the larvae can survive for a short time in the nose or under the eyelids, after which they die or are sneezed out.
  
  
  METHODS
  We describe a 47-year-old woman who during a stay in the Cape Verde Islands developed symptoms of sneezing, a swollen face and an itchy feeling in her nose. These symptoms were due to an infestation of three fully-developed larvae of the O. ovis species in her sinus maxillaries which were later evacuated by endoscopy.
  
  
  CONCLUSIONS
  In exceptional cases larvae of the O. ovis species can fully mature in a healthy person after a visit to an endemic area. Development into the mature stage has only been described in patients with a poor mucosal immune response.
authors.affiliation: Maasstad Ziekenhuis, Rotterdam, Afd. Keel-Neus-Oorheelkunde, the Netherlands. rubenhummelen@gmail.com
authors.forename: Ruben
authors.initials: R
authors.lastname: Hummelen
authors.forename: Theo
authors.initials: T
authors.lastname: Zeegers
authors.forename: Jan
authors.initials: J
authors.lastname: den Hollander
authors.forename: Ivar
authors.initials: I
authors.lastname: Tabink
authors.forename: Paul
authors.initials: P
authors.lastname: ten Koppel
mesh_terms: D000818:Animals; D055726:Cabo Verde / Q000208:ethnology; D004175:Diptera / Q000254:growth & development*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009198:Myiasis / Q000175:diagnosis* / Q000469:parasitology / Q000601:surgery; D009426:Netherlands; D012852:Sinusitis / Q000175:diagnosis* / Q000469:parasitology* / Q000601:surgery; D014195:Travel