ethmoid sinus

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Related to ethmoidal sinus: Sphenoid sinus

ethmoid sinus

An air cavity or space within the ethmoid bone, opening into the nasal cavity.

ethmoid sinus

Any of the 3-18 paranasal sinuses on each side of the skull in and adjacent to the ethmoid bone. The ethmoid sinuses can be categorized as anterior, middle, or posterior, with each group usually draining into a different part of the nasal cavity. Ethmoid sinuses have very thin walls and are interconnected via openings in the septa between the sinuses.
See also: sinus
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References in periodicals archive ?
Demographic and clinical characteristics of the patients Case no Age (Year) Sex Mucocele origin 1 29 M Bilateral frontal sinus 2 44 F Right ethmoidal sinus 3 58 F Right frontal sinus 4 35 F Left frontal sinus 5 69 M Left maxillary sinus 6 25 M Left frontal sinus 7 44 F Right ethmoidal sinus 8 58 F Right frontal sinus 9 35 F Left frontal sinus 10 69 M Left maxillary sinus 11 58 M Right ethmoidal sinus Case no Follow-up Complication time (month) 1 14 Recurrence 2 18 - 3 17 - 4 13 - 5 24 - 6 28 - 7 15 - 8 16 - 9 15 - 10 23 - 11 21 - * Abbreviations: M: Male F: Female Table 2.
Both patients had a displaced septum, and the hemangioma also had invaded the ethmoidal sinus and the orbit.
Children under the age of 14 years accounted for 57% of patients, indicating that adolescent boys represented the main study population; this is similar to previous reports of intraorbital foreign bodies.[sup][7],[8] Sinonasal foreign bodies are more commonly found in the maxillary sinus and frontal sinus in literature,[sup][1],[9] while in our series, ethmoidal sinus was most frequently involved.
The order of involvement of paranasal sinuses in patients with schwannomas will be ethmoidal sinus being most commonly involved, followed by the maxillary sinus, nasal fossa and sphenoid sinus.
Contrast enhanced C.T scan showed an oval enhancing lesion measuring 3.2-1.5-3.5 cm occupying right side of ethmoidal sinus and projecting into the right nasal cavity closely abutting turbinates and septum in the right nasal cavity.