Localization of orbit in patients with maxillary sinus hypoplasia: a radiological study

Özcan, Kürşat Murat; Hızlı, Ömer; Ulusoy, Hakan; Coskun, Zafer Unsal; Yıldırım, Güven

doi:10.1007/s00276-018-2054-9

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…Unless recognized, this could result in inadvertent perforation of the orbit whilst performing an ethmoidectomy during endoscopic sinus surgery (ESS) for a chronically obstructed and hypoplastic MS. 25 Craniofacial syndromes resulting in midface hypoplasia result in developmentally small maxillary sinuses. This will be bilateral in conditions such as Crouzon's and Apert's syndrome and following cleft palate repair; unilateral hypoplasia is seen in Hemifacial Microsomia (Pruzansky Grade 1) 26 , 27,28 Chronic inflammation of the sinonasal mucosa during childhood can result in impaired growth of the paranasal sinuses. The volume of the maxillary sinuses decreased and the bony thickness of the sinus walls increased with longstanding paediatric chronic rhinosinusitis.…”

Section: Abnormal Developmentmentioning

confidence: 99%

The maxillary sinus: physiology, development and imaging anatomy

Whyte

Boeddinghaus

2019

Dentomaxillofacial Radiology

130

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Objectives: The maxillary sinus is of paramount importance for otolaryngologists, rhinologists, oral and maxillofacial surgeons, head and neck and dental and maxillofacial radiologists. A comprehensive review article concerning the physiology, development and imaging anatomy was undertaken. Methods: Relevant literature pertaining to the physiology of the sinonasal cavity, development of the paranasal sinuses and imaging anatomy of the maxilla and maxillary sinus from 2000 to 2019 was reviewed. Emphasis was placed on literature from the last 5 years. Results: Extensive recent research using imaging has provided new insights into the development of the maxillary sinus, the other paranasal sinuses and the midface. The fundamental physiological concept of mucociliary clearance and its role in sinus health is emphasized. The paranasal sinuses are an integral part of a common mucosal organ formed by the upper and lower airway. An in-depth understanding of the soft-tissue and neurovascular relationships of the maxillary sinus to the deep fascial spaces and branches of the trigeminal nerve and external carotid artery respectively is required to evaluate and report imaging involving the maxillary sinus. Sinusitis of rhinogenic, rather than odontogenic origin, originates from nasal inflammation followed by anterior ethmoid disease and secondary obstruction of the ostiomeatal unit. The role of anatomical variants that predispose to this pattern of disease is discussed in detail with illustrative examples. The maxillary sinus is intimately related to the roots of the posterior maxillary teeth; the high frequency of mucosal disease and sinusitis of odontogenic aetiology is now well recognized. In addition, an understanding of the anatomy of the alveolar process, morphology of the alveolar recess of the maxillary sinus and neurovascular supply are essential both for deliberate surgical intervention of the sinus and complications related to oral surgical procedures. Conclusions: An understanding of the fundamental principles of the development, physiology, anatomy and relationships of the maxillary sinus as depicted by multi-modality imaging is essential for radiologists reporting imaging involving the paranasal sinuses and midface.

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Section: Abnormal Developmentmentioning

confidence: 99%

The maxillary sinus: physiology, development and imaging anatomy

Whyte

Boeddinghaus

2019

Dentomaxillofacial Radiology

130

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“…In previous literature, patients with a hypoplastic MS were reported to have a higher presence of FS hypoplasia . In addition, medial displacement of orbit in patients with MS hypoplasia was evident in the report by Ozcan et al In these recent studies, the touchstone of the method was evaluation of the structures upon paranasal CT scans because paranasal CT was suggested to be the gold standard technique for evaluation of paranasal sinuses . The association between FS pneumatization and olfactory fossa was at the center of several prior studies, but we also focused on olfactory fossa depth and lateral lamella length in patients with MS and SS hypoplasia.…”

Section: Discussionmentioning

confidence: 91%

“…In this study, we found that patients with MS hypoplasia (particularly type 3 hypoplasia) had a deeper olfactory fossa and longer lateral lamella, as did patients with SS hypoplasia. Thus, patients with MS hypoplasia might be under a higher risk of skull base injury as well as lamina papyracea injury . Nevertheless, the limited number of patients with type 3 MS hypoplasia (only 13) could be considered a limitation of our study.…”

Section: Discussionmentioning

confidence: 95%

Does paranasal sinus development affect olfactory fossa depth and lateral lamella length?

2019

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Objectives: To investigate the olfactory fossa depths and lateral lamella lengths of patients with different types of developmental disorders of paranasal sinuses in comparison with normal controls.Study Design: Retrospective, archival, radio-anatomical study. Methods: We included 58 patients with maxillary sinus hypoplasia, 50 patients with frontal sinus hypoplasia/aplasia, 50 patients with sphenoid sinus hypoplasia/aplasia, and 40 normal controls. Reviewing paranasal computerized tomography scans, we noted the olfactory fossa depths and lateral lamella lengths of all the groups and compared between the hypoplasia groups and the control group.Results: Compared with the normal controls, the maxillary hypoplasia group (P < 0.001), frontal hypoplasia/aplasia group (P = 0.004), and sphenoid hypoplasia/aplasia group had significantly deeper olfactory fossa (P = 0.003). The mean lateral lamella lengths in the type 1, type 2, and type 3 hypoplastic maxillary sinus groups were significantly greater compared with that in the control group (P < 0.001). Additionally, the mean lateral lamella lengths in the hypoplastic frontal sinus, aplastic frontal sinus, and hypoplastic sphenoid sinus groups were significantly greater compared with that in the control group (P < 0.001).Conclusion: The patients with pneumatization defects of the maxillary, frontal, and sphenoid sinuses had deeper olfactory fossa and longer lateral lamella related to increased risk of skull base injury during endoscopic sinus surgery.

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“…According to Bolger’s classification system, it is a bilateral type I MSH, with morphologically unaltered uncinate process and ethmoidal infundibulum, as documented in CBCT. Various studies have used Bolger’s classification of MSH [ 2 , 3 , 4 , 8 , 10 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Numerous studies have documented MSH mostly, or exclusively, by coronal CT slices [ 2 , 6 , 8 , 17 , 18 , 19 , 22 , 23 , 26 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

“…Selçuk et al (2008) added several other possible modifications in MSH: bony thickening of sinus wall, hypoplasia or aplasia of other sinuses, canine fossa elevation, anterior ethmoidal cell variation, and presence of ethmomaxillary sinus [ 8 , 9 ]. Cases of MSH have also been detected with superior orbital fissure asymmetry [ 5 ] or enlargement [ 9 ], medial localization of the orbit [ 10 ], depression of the orbital roof [ 11 ], and lateral displacement of the infraorbital canal [ 9 ]. Posterior ethmoid air cells expanded within the MS are regarded as ethmomaxillary sinuses [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Anatomical Changes in a Case with Asymmetrical Bilateral Maxillary Sinus Hypoplasia

et al. 2022

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Background and Objectives: The maxillary sinus hypoplasia (MSH) is an occasional variation of the maxilla, occurring either unilaterally or bilaterally. Previous studies dealing with MSH have not detailed the consequent anatomical changes of the maxilla and adjacent fossae. Materials and Methods: A 58-year-old female case was scanned in Cone Beam Computed Tomography and found to have asymmetrical bilateral MSH, who was then further evaluated anatomically. Results: The maxillary sinuses were hypoplastic and had mild mucosal thickenings. The orbital floors were curved. The uncinate process and the ethmoidal infundibulum were laterally displaced beneath the orbit floor. On each side, the lateral nasal wall protruded within the respective maxillary bone to reach above the vestibular cortical plate of the alveolar process. This expansion of the lateral nasal walls was limited to the premolar and first molar regions. The inferior turbinates were laterally curved. The perpendicular palatine plate was building a postero-lateral nasal wall in front of the pterygopalatine fossa. Conclusions: The classification systems of MSH should be detailed to indicate whether the normal uncinate process is medial or inferior to the orbit. The lateral expansion of the lateral nasal wall in MSH is limited to the anterior part of that wall. The laterally expanded nasal fossa could reach anterior to the pterygopalatine fossa in MSH. Seemingly, CBCT is a better tool than CT to evaluate the detailed anatomy of the modified anatomical structures in MSH; as such, it could be of help in a surgical approach.

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Localization of orbit in patients with maxillary sinus hypoplasia: a radiological study

Abstract: The orbit has a medial localization in patients with maxillary sinus hypoplasia resulting in a higher complication risk during endoscopic sinus surgery.

Cited by 7 publications

References 12 publications

The maxillary sinus: physiology, development and imaging anatomy

The maxillary sinus: physiology, development and imaging anatomy

Does paranasal sinus development affect olfactory fossa depth and lateral lamella length?

Anatomical Changes in a Case with Asymmetrical Bilateral Maxillary Sinus Hypoplasia

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