Sinuses Flashcards
1
Q
What drains via the middle meatus
A
Frontal, anterior ethmoidal and maxillary sinuses
2
Q
What drains via the superior meatus
A
Posterior ethmoids, sphenoid sinuses (via sphenoethmoidal recess)
3
Q
What drains via the inferior meatus
A
Lacrimal duct
4
Q
Name key cells in sinus and location
A
Agger Nasi cell - anterior most ethmoid air cell
Concha bullosa - aeration of the middle turbinate
Haller cell - ethmoid cell along inferomedial orbit
Onodi cell - posterior superior most ethmoid, behind orbit
5
Q
DDx mass in paranasal sinus
A
Mucous retention cyst
Mucocele (opacification and expansion, thinning of bone)
Antrochonal polyp (distends the ostium)
Inverted papilloma (cerebriform enhancement, bony remodelling)
Invasive fungal sinusitis
Sinonasal malignancy (SCC)
