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Ethmomaxillary sinus.

K Murat Ozcan1, Adin Selcuk, Vedat Oruk

  • 1Ankara Numune Education and Research Hospital 4th ENT Clinic, Ankara, Turkey.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|September 20, 2007
PubMed
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The ethmomaxillary sinus, a posterior ethmoid cell variation, was found in 1.93% of patients undergoing paranasal sinus CT scans. This anatomical variation can be identified incidentally during imaging studies.

Area of Science:

  • Otolaryngology
  • Radiology
  • Anatomy

Background:

  • The ethmomaxillary sinus is an anatomical variation originating from posterior ethmoid cells.
  • It extends into the maxillary sinus and typically drains into the superior nasal meatus.
  • This sinus is often discovered incidentally during paranasal sinus imaging.

Purpose of the Study:

  • To determine the prevalence of the ethmomaxillary sinus in patients undergoing paranasal sinus CT scans.
  • To investigate associated anatomical variations and mucosal diseases.

Main Methods:

  • Retrospective analysis of 466 paranasal sinus CT scans.
  • Patients included had preliminary diagnoses such as septal deviation, chronic inflammatory paranasal sinus disease, and turbinate disorders.
  • Detailed examination for the presence and characteristics of the ethmomaxillary sinus.

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Main Results:

  • The ethmomaxillary sinus was identified in 9 out of 466 patients (1.93%).
  • One instance of a septated ethmomaxillary sinus was observed.
  • Further analysis explored co-existing anatomical variations and mucosal inflammation.

Conclusions:

  • The prevalence of the ethmomaxillary sinus is confirmed at approximately 1.93% in this patient cohort.
  • This variation is an incidental finding on paranasal CT scans.
  • Understanding its prevalence is important for interpreting sinonasal imaging.