Roof Of Ethmoid Sinus Radiology

The middle group are now incorporated into the anterior group.

Roof of ethmoid sinus radiology.

The bone plates of the two sides may be at different levels figure 1. The ethmoid roof is primarily formed by the fovea or fossa ethmoidalis an extension of the orbital plate of the frontal bone 4 6 10. The anterior ethmoidal air cells drain to the hiatus semilunaris and middle meatus via the ethmoid bulla which forms parts of the ostiomeatal complex. The lateral lamella joins the cribriform plate to the fovea ethmoidalis.

Depending on its anterior and or posterior location they can also include nasoethmoid and sphenoethmoid mucoceles. It is a very dangerous area with respect to surgical dissection 3 11. An ethmoid mucocele is a form of a paranasal sinus mucocele involving the ethmoid air cells. This page provides a gallery of images that presents the anatomical structures found on orbit ct.

Objective we evaluated the extent of asymmetry evident in paranasal sinus computed tomography ct scans of turkish patients without sinusitis in the ethmoid roof. The anterior middle and posterior ethmoidal air cells. Ethmoid mucoceles are considered the second most commonest in location 2. Materials and methods we retrospectively studied multiplanar reformatted ct images of the paranasal sinus 1 mm sections from 110 patients 50 male 60 female.

The ethmoid labyrinth is covered by the fovea ethmoidalis of the frontal bone and separates the ethmoidal cells from the anterior cranial fossa.