Frontal intersinus septal cells

Frontal intersinus septal cells, also known as interfrontal sinus septal cells, are a subtype of medial frontal recess cells.

The frontal intersinus septal cells lie within the intersinus septum between the frontal sinuses. They usually drain in the medial aspect of the frontal recess.

When extensively pneumatized, aeration can extend to the crista galli.

Their origin is debated; they were initially thought to originate from displaced ethmoid air cells from the frontal recess, but a recent study suggests that they are actually diverticula from the frontal sinuses 1.

These cells should be identified and reported on pre-functional endoscopic sinus surgery imaging studies as they can impinge and obstruct the frontal ostium.

Anatomy: Head and neck
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Article information

rID: 59350
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:
  • Interfrontal sinus septal air cells
  • Interfrontal sinus septal air cell
  • Interfrontal sinus septal cell
  • Inter-frontal sinus septal cells
  • Inter-frontal sinus septal cell
  • Inter-frontal sinus septal air cell
  • Inter-frontal sinus septal air cells
  • Interfrontal sinus septal cells
  • Frontal intersinus septal air cells
  • Frontal intersinus septal air cell

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