Roof Of Ethmoid Sinus Radiology

The very thin horizontal cribriform plate lamina cribrosa of the ethmoid bone is bounded laterally by the vertical lateral lamella.

Roof of ethmoid sinus radiology.

The ethmoid labyrinth is covered by the fovea ethmoidalis of the frontal bone and separates the ethmoidal cells from the anterior cranial fossa. The middle group are now incorporated into the anterior group. 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 bone plates of the two sides may be at different levels figure 1.

Our data contribute to the body of knowledge on the subject. Depending on its anterior and or posterior location they can also include nasoethmoid and sphenoethmoid mucoceles. This page provides a gallery of images that presents the anatomical structures found on orbit ct. It is a very dangerous area with respect to surgical dissection 3 11.

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. Historically the ethmoid sinuses were subdivided into 3 groups of air cells. 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.

Ethmoid mucoceles are considered the second most commonest in location 2.