(10,11) Sinus or ethmoid cell
obstruction after mucosal trauma and mucosal inflammation have an important pathophysiologic role in mucocele formation; (12,14) therefore, patients who undergo FESS for nasal polyposis might be at higher risk of postoperative mucocele.
Caption: FIGURE 1: CT demonstrates lesion occupying ethmoid cells
, nasal cavity, and maxillary sinus and extending through the lamina papyracea.
(9) The ethmoid bulla is one of the largest anterior ethmoid cells
and, if enlarged, can encroach on the OMC (Fig.
"Angiofibroma of the nasal cavity and anterior ethmoid cells
in a young woman: Case report," European Archives of OtoRhino Laryngology and Head & Neck, Vol.264, suppl., p.331.
Agger nasi cells are the most anterior ethmoid cells
and extend anteriorly into the lacrimal bone.
Initially, head and paranasal sinuses CT scan was performed and revealed a large, isodense, well-defined, expansive space-occupying lesion in a midline location, centered in the body of the sphenoid bone and extended to posterior ethmoid cells
. The lesion was causing marked thinning of the sphenoid sinus bony wall with bony erosion areas.
Care is taken to leave a strut of bone inferiorly, which is composed of the floor of the bulla and anterior ethmoid cells
The agger nasi cells (Latin for 'nasal mound') are the most anterior ethmoid cells
. They are extramural cells (not confined within the ethmoid bone) and extend anteriorly into the lacrimal bone.
In particular, if no soft tissue mass is discernible in either the underlying ethmoid cells
or the adjacent orbit, such equivocal erosion is often not an area of pathological destruction.
Surgical dissection of the ethmoid labyrinth dates back to before 300 BC when Hippocrates removed polyps and parts of ethmoid cells
with a sponge attached to strings.