1. The Ethmomaxillary Sinus-A False Duplicate Maxillary Sinus.
- Author
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Geamănu A, Rusu MC, Mureşan AN, and Vrapciu AD
- Subjects
- Humans, Tomography, X-Ray Computed, Male, Female, Maxillary Sinus anatomy & histology, Maxillary Sinus diagnostic imaging, Maxillary Sinus surgery, Ethmoid Sinus diagnostic imaging, Ethmoid Sinus surgery, Ethmoid Sinus anatomy & histology, Endoscopy methods
- Abstract
Functional endoscopic sinus surgery consistently benefits from good anatomical knowledge and modern imaging techniques. Ethmoid air cells migrate in specific topographical sites near the ethmoid. Posterior ethmoid air cells that descend into the maxillary sinus (MS) are ethmomaxillary sinuses (EMSs) that into the superior nasal meatus. Few previous studies found EMSs in 0.68% to 16.48% of cases. An EMS differs from a Haller's infraorbital cell nearing the ethmoidal infundibulum. A posterior ethmoid air cell intercalated between the ethmoid, MS and sphenoidal sinus is a Sieur's cell, but it could also be regarded as an EMS. An EMS should be discriminated from a maxillary recess of the sphenoidal sinus. An EMS could determine Onodi's maxillary bulla into the MS. The false duplicate MS described by Zuckerkandl consists of a MS draining into the middle nasal meatus adjoined by an EMS draining into the superior nasal meatus. These are separated by the ethmomaxillary septum. The latter may be confused with an intrasinus septum of the MS if the drainage pathways are not adequately documented. Therefore, a case-by-case anatomic identification of the pneumatic spaces nearing the MS should be performed before surgical endoscopic approaches of the nose and sinuses., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 by Mutaz B. Habal, MD.)
- Published
- 2024
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