The goal of the earlier total intranasal ethmoidectomy had been to achieve a complete removal of the anterior and posterior ethmoid
labyrinth, including excision of the middle turbinate.
The frontal sinuses are most frequently affected (60-65%), followed by the ethmoid
(20-30%), maxillary (10%) and sphenoid (2-3%).
air cells are present at birth and continue to grow until late puberty or until they reach compact bone (Fig.
biopsy, left posterior ethmoid
air cell, and left sphenoid sinus mucosa specimens all include normal respiratory type epithelium with mildly inflamed and oedematous underlying stroma.
Frontal sinus was the most common primary site (62%), followed by ethmoid
cartilage partially exposed laterally to form facet for articulation with palatine.
The abscess was drained and cranialization of the frontal and ethmoid
sinuses was done (Fig.
Subjects with evidence of isolated frontal, ethmoid
, or ethmoid
and frontal sinusitis were excluded.
These cavities, located within the skull or bones of the head surrounding the nose, include the frontal sinuses over the eyes in the brow area; the maxillary sinuses inside each cheekbone; the ethmoids
just behind the bridge of the nose and between the eyes; and behind them, the sphenoids in the upper region of the nose and behind the eyes.
The Entellus FinESS system treats the two most commonly inflamed sinuses, the maxillary and anterior ethmoid
A case of a maxillary ameloblastoma with an unusual initial presentation of nasal obstruction and with recurrence after radical surgery in the frontal and ethmoid
sinuses is described.
Radiographic evaluation revealed bilateral ethmoid
lesions and complete opacification of right maxillary sinus.