title: [Foreign bodies in maxillary sinus].
abstract: BACKGROUND
  Foreign bodies in maxillary sinus (FBMS), whatever their origin or nature, are an unusual clinical condition. Diagnosis is based on the radiological findings in a clinical context of unilateral chronic rhinosinusitis. Treatment is the surgical removal of the intrasinusal foreign body.
  
  
  METHODS
  To identify FBMS, the records of 68 patients with unilateral chronic rhinosinusitis operated on from 2000 to 2007 were reviewed.
  
  
  RESULTS
  From 68 records reviewed, we found 11 (16 %) FBMS. Ten (91 %) of these 11 foreign bodies were thought to come from the teeth and the last 1 (9 %) had a non odontogenic origin. Eight of the 11 (73 %) patients with FBMS presented with chronic maxillary sinusitis symptoms and all patients showed radiological findings. Treatment was the surgical removal of the foreign body, in 9 (82 %) patients through endonasal approach by functional endoscopic sinus surgery (FEES) and in the other 2 (18 %) patients a mixed surgical procedure by endonasal meatotomy and oral antrotomy was required.
  
  
  CONCLUSIONS
  Chronic maxillary sinusitis showing FBMS is rare and it must be suspected with a prior history of dental procedures. The most frequent source of FBMS is material of odontogenic origin, and non-odontogenic origin secondary to an external injury in an accident or assault is much more unusual. We also review the nature of these foreign bodies, their clinical implications and treatment options.
authors: Unidad de Otorrinolaringología, Hospital Nostra Senyora de Meritxell, Andorra. ebodet@hotmail.com
authors: Eduard
authors: E
authors: Bodet Agustí
authors: Ignacio
authors: I
authors: Viza Puiggrós
authors: Coia
authors: C
authors: Romeu Figuerola
authors: Vicenç
authors: V
authors: Martinez Vecina
mesh_terms: D000328:Adult; D005547:Foreign Bodies / Q000209:etiology / Q000601:surgery; D006801:Humans; D008443:Maxillary Sinus; D008875:Middle Aged; D012189:Retrospective Studies