Combined Aplasia of Frontal and Sphenoid Sinuses with Hypoplasia of Ethmoid and Maxillary Sinuses

Khanduri, Sachin; Singh, Nidhi; Bhadury, Samarjit; Ansari, Azeem Ahmad; Chaudhary, Mriganki

doi:10.1007/s12070-015-0877-9

Cited by 6 publications

(1 citation statement)

References 10 publications

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“…Agenesis of sphenoid sinus is rare and occurs in 1% to 1.5%. 22 Despite the well-appreciated variability in sphenoid sinus anatomy, there are no documented cases of retrosphenoid cells in the literature to date. The retrosphenoid cell is distinguished from an Onodi cell in that it occurs truly posterior to the sphenoid sinus-between the sphenoid sinus and the clivus-and lacks a natural drainage pathway connecting to the sphenoid sinus on all triplanar CT imaging.…”

Section: Discussionmentioning

confidence: 99%

Anatomic Sphenoid Cell Variants: Introduction of the Retrosphenoid Cell and Relevance in the Presentation and Management of Sinus Disease

Dadgostar

Hashmi

Fan

et al. 2019

Am J Rhinol�Allergy

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Background Despite the well-appreciated variability in sphenoid sinus anatomy, there are no documented cases of retrosphenoid cells in the literature to date. Objective This study defines and determines the prevalence of retrosphenoid cells as identified on computed tomography (CT) imaging and intraoperative endoscopy and reviews the prevalence of other related anatomical variants of the sphenoid sinus. Methods Retrospective study of 300 random noncontrast sinus CT scans of patients with chronic rhinosinusitis presenting to a tertiary rhinology center. All identifiable anatomic variations and any presence of retrosphenoid cells and their pneumatization patterns were recorded. The prevalence of various anatomic variations of the sphenoid sinus was also calculated. Results A total of 300 sinus CT scans were included in the study. Protrusion of both the internal carotid artery (42.6%) and optic nerve (19.7%) into the sinus was more prevalent than the dehiscence of either one. A retrosphenoid cell was identified in 2% of CT scans. Other anatomic variants were less prevalent. Conclusion Meticulous review of preoperative imaging is key in identifying rare and complex sphenoid cell variations in planning surgical approaches and potential treatment strategies for the unusually pneumatized sphenoid air cells. Various manifestations of sinus disease can be localized to this area, and suspicion of a retrosphenoid cell should be raised in patients presenting with recalcitrant headache.

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Section: Discussionmentioning

confidence: 99%

Anatomic Sphenoid Cell Variants: Introduction of the Retrosphenoid Cell and Relevance in the Presentation and Management of Sinus Disease

Dadgostar

Hashmi

Fan

et al. 2019

Am J Rhinol�Allergy

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Three‐dimensional reconstruction of King Henri IV's paranasal sinuses and mastoid cells

Baudouin,

Amelot,

Huynh‐Charlier

et al. 2024

Clinical Anatomy

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PurposeThe preserved head of King Henri IV of France (life 1553–1610, reign 1589–1610) has survived to the present day thanks to high‐quality embalming and favorable conservation conditions. The aim of this study was to examine Henry IV's upper resonant cavities and mastoids using an original and innovative forensic three‐dimensional segmentation method.MethodsThe paranasal sinuses and mastoid cells of King Henri IV of France were studied by cross‐referencing available biographical information with clinical and flexible endoscopic examination and computed tomography (CT‐scan) imaging. The paranasal sinuses and mastoid cells were delineated and their volumes were assessed using ITK‐SNAP 4.0 software (open‐source). Graphical representations were created using Fusion 360® (Autodesk Inc., San Rafael, CA, USA) and MeshMixer® (Autodesk Inc., San Rafael, CA, USA).ResultsParanasal sinus tomodensitometry revealed abnormalities in shape and number. Henri IV of France suffered from sinus aplasia. Neither the left sphenoid nor left frontal sinus contrasted sharply, and a remarkable pneumatization of the right clinoid processes extended throughout the height of the right pterygoid process. The total volumes of Henri IV's mastoid air‐cells were estimated at 27 and 26 mL, respectively, for the right and left sides, exceeding the normal mean and the maximum of modern subjects by a wide margin. No sign of chronic ear or sinus condition was found.ConclusionsAn innovative method has been developed in forensic medicine to establish hypotheses about the growth and respiratory conditions of the face.

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Coexistence of frontal sinus hypoplasia with maxillary sinus hypoplasia: a radiological study

Özcan

Hızlı

Sarısoy

et al. 2018

Eur Arch Otorhinolaryngol

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The goal of this study was to determine whether frontal sinus hypoplasia coexists with maxillary sinus hypoplasia. Analyzing paranasal CT scans retrospectively, we included 86 patients who had a hypoplastic maxillary sinus at least on one side and 80 patients with bilateral normal maxillary sinuses (control group). We classified hypoplastic maxillary sinuses using the classification system previously defined by Bolger et al. (Otolaryngol Head Neck Surg 103(5):759-765, 1990). We classified the frontal sinuses as aplastic, hypoplastic, medium-sized, and hyperplastic; as previously defined by Guerram et al. (Am J Phys Anthropol 154(4):621-627, 2014). We compared the presence of frontal sinus hypoplasia using Chi-square test between the groups. The mean age of the maxillary sinus group was 43.2 (range 18-84) years. Of 86 patients, 33 (38.4%) had unilateral and 53 (61.6%) had bilateral maxillary sinus hypoplasia. Of 139 maxillary sinuses totally included, 73 (52.5%) were type 1, 51 (36.7%) were type 2 and 15 (10.8%) were type 3 hypoplastic maxillary sinuses. Of 332 frontal sinuses totally included, 25 (7.5%) were aplastic, 32 (9.6%) were hypoplastic, 172 (51.9%) were medium-sized, and 103 (31%) were hyperplastic. Of 86 patients with a hypoplastic maxillary sinus at least on one side, 29 (33.7%) had a hypoplastic and/or aplastic frontal sinus, while 10 (12.5%) had a hypoplastic and/or aplastic frontal sinus at least on one side in control group. Incidence of frontal sinus hypoplasia and/or aplasia was significantly higher in patients with maxillary sinus hypoplasia compared to the patients with bilaterally normal maxillary sinuses (χ = 10.384, P = 0.001). Maxillary sinus hypoplasia has a significantly higher coexistence with frontal sinus hypoplasia. This study may have an implication for anatomical studies about the development of the paranasal sinuses and paranasal sinus surgery as well as further morphological studies.

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Combined Aplasia of Frontal and Sphenoid Sinuses with Hypoplasia of Ethmoid and Maxillary Sinuses

Cited by 6 publications

References 10 publications

Anatomic Sphenoid Cell Variants: Introduction of the Retrosphenoid Cell and Relevance in the Presentation and Management of Sinus Disease

Anatomic Sphenoid Cell Variants: Introduction of the Retrosphenoid Cell and Relevance in the Presentation and Management of Sinus Disease

Three‐dimensional reconstruction of King Henri IV's paranasal sinuses and mastoid cells

Coexistence of frontal sinus hypoplasia with maxillary sinus hypoplasia: a radiological study

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