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Interfrontal sinus septal cell: a cause of obstructing inflammation and mucoceles

P M Som1, W Lawson

  • 1Department of Otolaryngology, Mount Sinai School of Medicine, New York University, New York, NY 10029, USA. peter.som@mssm.edu

AJNR. American Journal of Neuroradiology
|May 10, 2008
PubMed
Abstract

Insights

Frontal intersinus septal cell mucoceles are rare but distinct on imaging. These midline lesions can be differentiated from common frontal sinus mucoceles using CT and MR imaging.

Area of Science:

  • Otolaryngology
  • Radiology
  • Head and Neck Surgery

Background:

  • Frontal intersinus septal cells are anatomical variations.
  • Mucoceles can rarely develop within these cells, leading to complications.
  • Understanding these rare entities is crucial for accurate diagnosis.

Purpose of the Study:

  • To present the imaging findings of mucoceles arising within frontal intersinus septal cells.
  • To differentiate these rare mucoceles from common frontal sinus mucoceles.
  • To highlight the diagnostic utility of CT and MR imaging.

Main Methods:

  • Retrospective review of otolaryngology case material since 2000.
  • Identification of surgically proven frontal intersinus septal cell mucoceles.
  • Comparison with classic frontal sinus and anterior ethmoid mucoceles using CT/MR imaging.

Main Results:

  • Four cases of frontal intersinus septal cell mucoceles showed an expanded midline frontal sinus cell with thinned sinus tables.
  • Classic frontal sinus mucoceles were located laterally with off-midline thinning.
  • Anterior ethmoid mucoceles were located inferior to the frontal sinuses.

Conclusions:

  • Frontal intersinus septal mucoceles have a distinct midline appearance on CT and MR imaging.
  • Imaging can reliably differentiate these rare mucoceles from common frontal sinus mucoceles.
  • Distinguishing from anterior ethmoid mucoceles is also routinely achieved.

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