References in periodicals archive ?
The ethmoid bone consists of four parts: horizontal (cribriform) plate, vertical (perpendicular) plate, two lateral masses (labyrinths).
Later, cases of GCRG were reported to originate from sphenoid bone, ethmoid bone, skull base, temporal bone, craniofacial bone, short bones of the hand and feet, and long bones of the extremities.
According to the embryonic hypothesis, the main places for paranasal sinus osteoma formation are osseous proliferations at the junctions where the cartilaginous ethmoid bone meets the membranous frontal bone (2).
The dorsal nasal turbinate was the longest and extended from level of third transverse rugae of hard palate to level of cribriform plate of ethmoid bone and it continued rostrally as straight fold.
The uncinate process is a part of the ethmoid bone. (1) It arises inferiorly from the ethmoid process of the inferior turbinate and inserts either superiorly at the ethmoid roof, superolaterally on the lamina papyracea, or superomedially on the middle turbinate.
The roof of the ethmoid bone is formed by the fovea ethmoidalis laterally and the cribriform plate medially.
They are extramural cells (not confined within the ethmoid bone) and extend anteriorly into the lacrimal bone.