title: Asymptomatic posterior orbital cellulitis resulting from ethmoid/maxillary sinusitis.
abstract: BACKGROUND
  Although vision-threatening sinusitis complications are not uncommon, an unusual case of asymptomatic posterior orbital cellulitis resulting from maxillary and ethmoidal sinus infection is presented.
  
  
  RESULTS
  An 11-year-old girl was brought to us for a routine optometric examination, reporting only blurred distance vision. A mild afferent pupillary defect was the key to detection and diagnosis of a vision-threatening posterior orbital cellulitis.
  
  
  CONCLUSIONS
  A literature review of relevant anatomic and pathologic mechanisms, as well as radiologic recommendations, follows. This case appears to be a new clinical entity, an asymptomatic variant of posterior orbital cellulitis.
authors.forename: R F
authors.initials: RF
authors.lastname: Filips
authors.forename: J J
authors.initials: JJ
authors.lastname: Liudahl
mesh_terms: D002481:Cellulitis / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000503:physiopathology; D002648:Child; D015521:Ethmoid Sinusitis / Q000150:complications* / Q000000981:diagnostic imaging; D015818:Eye Infections, Bacterial / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D015523:Maxillary Sinusitis / Q000150:complications* / Q000000981:diagnostic imaging; D009916:Orbital Diseases / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000503:physiopathology; D013203:Staphylococcal Infections / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D014792:Visual Acuity; D058609:Visual Field Tests; D014794:Visual Fields