fovea ethmoidalis

fo·ve·a eth·moi·da·'lis

the roof of the ethmoid air cells.
Farlex Partner Medical Dictionary © Farlex 2012
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CT imaging showed an air-fluid level within a left posterior ethmoid air cell with an apparent 2 mm adjacent osseous dehiscence along the fovea ethmoidalis, suspicious for the source of the CSF leak in this patient (Figure 1).
The roof of the ethmoid bone is formed by the fovea ethmoidalis laterally and the cribriform plate medially.
(9) In 1962, Keros studied 450 skulls and described 3 types of olfactory fossas which are formed by cribriform plate and the fovea ethmoidalis. He distinguished three types; Type 1: the cribriform plate 1-3 mm more caudal than ethmoid roof least common (11% of 450 skulls), Type 2: the cribriform plate is 4-7 mm lower, was the most common and occurred in 70% of cases, and Type 3 cribriform plate being 8-16 mm (18%); this being the most dangerous for the surgeon because of a perforation through the lateral lamella of the cribriform plate, (8) leading to CSF rhinorrhea and intracranial injury.
The medial division was attached superiorly to the middle concha, and the lateral division was attached to both the fovea ethmoidalis and the lamina papyracea.
The most common locations for iatrogenic injury to the skull base during endoscopic sinus surgery are the lateral lamella of the cribriform, posterior fovea ethmoidalis, frontal recess, and sphenoid sinus [7].
(3) The most common location of the defect is the region of the fovea ethmoidalis and posterior wall of frontal sinus followed by the cribriform plate of ethmoid and the sphenoid sinus.
Herniation through the cribriform plate and fovea ethmoidalis are a few of basal variants.4 Similarly, they can also be classified into anterior and posterior encephaloceles.
The tissue removed included the root of the superior middle turbinate and the anterior skull base mucosa adjacent to the superior-most anterior ethmoid cell next to the fovea ethmoidalis. The root of the middle turbinate was found to contain a small focus of residual disease on permanent histopathologic examination.
Skull Base Configuration: The roof of the ethmoid bone is formed by the fovea ethmoidalis laterally and the cribriform plate medially.
One of the characteristic radiographic findings of olfactory neuroblastoma is a dumbbell-shaped mass that extends across the cribriform plate; erosion of the cribriform plate, lamina papyracea, and/or fovea ethmoidalis may also be seen.
The ethmoid sinuses are divided into groups of cells by bony basal lamellae that extend laterally to the laminae papyracea and superiorly to the fovea ethmoidalis. The lamellae prevent one group of cells from intermingling with another, but they do not prevent intramural expansion of one group into another.
The multiple defects involved the anterior and posterior walls of the frontal sinuses, the fovea ethmoidalis bilaterally, the cribriform plate, the far-right lateral floor of the sphenoid sinus, and both lateral sphenoid walls.