Aplasia of Frontal Sinus: Ct Study

Choudhary, Sarita; Pasricha, Navbir; Sehgal, Garima; Siddiqui, Mohammed S.; Khanduri, Sachin; Srivastava, Mrinal Ranjan; Prasad, Madhusudan; Bedi, Robinder P.

doi:10.16965/ijar.2015.237

Cited by 9 publications

(4 citation statements)

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“…Our findings were very similar to Aydinlioglu et al and Sarita Choudhary et al who also reported unilateral absence of frontal sinus more in females than in males. 3,6 Aydinlioglu et al (2003) in their retrospective study on CT scans of 1200 subjects reported unilateral absence in 4.8% subjects and bilateral absences in 3.8% of subjects.…”

Section: Resultsmentioning

confidence: 99%

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Incidence of frontal sinus aplasia in Indian population

Moideen

Mohan

et al. 2016

Int J Otorhinolaryngol Head Neck Surg

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Background: Aplasia or agenesis of frontal sinuses is not uncommon in the literature. Previous studies have shown unilateral aplasia varying from 1-10% and bilateral agenesis of frontal sinus in 3-10% of patients. It is critical for the operating surgeon to be well aware of the normal anatomy and the variations while doing procedures like endoscopic sinus surgeries, cranialisation of frontal sinuses, frontal sinus trephination, and during anterior skull base procedures. The aim of this study is to demonstrate the incidence of anatomic variations of frontal sinus among Indian populations. Methods: We did a cross sectional study on computed tomography (CT) scan of head, nose and paranasal sinuses in 730 patients above the age of 10 years. We excluded pregnant ladies, patients with prior sinus surgeries, sinonasal tumors, nasal polyposis, craniofacial trauma. Results: We observed an incidence of 6.2% of unilateral aplasia of frontal sinus (2.2% in males and 4.0% in females, 3.7% right side and 2.5% left side) and 2.5% of bilateral frontal sinus aplasia (0.95% in males and 1.5% in females). Conclusions: Frequent occurrence of frontal sinus aplasia highlights the need to gain a thorough knowledge of the normal anatomy and its variations in order to navigate safely through the nose during basic endoscopic sinus or anterior skull base surgeries to avoid complications.

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Section: Resultsmentioning

confidence: 99%

“…Search of literature revealed similar findings. 3,[6][7][8] But it was contradicting to Yoshino et al findings, who reported unilateral left frontal sinus absence (16.8%) was more common than in right side (4.9%). 9 In this study, the overall frequency of bilateral frontal sinus absence was 2.5%.…”

Section: Resultsmentioning

confidence: 99%

Incidence of frontal sinus aplasia in Indian population

Moideen

Mohan

et al. 2016

Int J Otorhinolaryngol Head Neck Surg

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“…Forensic identification methods rely on evaluating the morphology of the present sinus, and the absence of the frontal sinus (ie agenesis or aplasia) can be problematic [33]. For bilateral absences, the rate was higher for females than for males [75][76][77][78]. Although the difference was statistically significant, it likely has little predictive value for estimating the sex of skeletal remains based on frontal sinus absence.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic accuracy of paranasal sinus measurements on multislice computed tomography for sex estimation: A systematic review, meta‐analysis, and meta‐regression

Mendonça

Ribeiro

Silva

et al. 2022

Journal of Forensic Sciences

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This systematic review aimed to answer the question, "Are paranasal measurements obtained with multislice computed tomography able to accurately estimate sex?" This PROSPERO-registered systematic review included six databases and gray literature.Meta-analysis of linear and volumetric data was performed using a random-effects model, mean differences (MDs), and inverse variance. The QUADAS-2 tool-related risk of bias (RoB) and certainty evidence (GRADE approach) were assessed. A total of 1651 articles were initially selected from the main electronic databases for title and abstract screening. After removing duplicates and studies that did not meet the inclusion criteria, 18 studies were eligible for the meta-analysis. The screened studies included 2507 computed tomography of non-pathologic paranasal sinuses of adults aged between 18 and 40 years. Frontal sinus (FS) width (−4.89 mm; p < 0.00001) and maxillary sinus (MS) height (−3.73 mm; p < 0.00001) showed the greatest MD between females and males. Regarding volume, the MD was significant (p < 0.00001) in both paranasal sinuses (−3.01 and −1.04 cm 3 , respectively). The best sensitivity (ability to identify males) and specificity (ability to identify females) were found for the anteroposterior (72.3%) and intermaxillary (69%) MS distances, respectively. In general, all studies exhibited low RoB and applicability concerns. The certainty of the evidence was categorized as very low to moderate. Both paranasal sinuses were shown to be dimorphic structures, which could be valuable tools for forensic identification using the FS width and MS anteroposterior distance measurements. However, heterogeneity among studies must be considered.

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“…They grow at the age of seven or eight and mature after puberty. 2,3 After 20 years of age, the size of the sinuses remains unchanged until the atrophic changes begin to appear due to advancing age. 4 Frontal sinuses drain into the anterior part of the middle meatus of the nose through an ethmoid infundibulum or a frontonasal duct.…”

Section: Introductionmentioning

confidence: 99%

Anatomical variations of frontal sinus pneumatization: A computed tomography-based study

et al. 2023

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Background: The pneumatization of the frontal sinus is variable between individuals, including monozygotic twins. The volumetric anatomic variants of the frontal sinus are classified into aplasia, hypoplasia, medium-sized, and hyperplasia. We aimed to study the frontal sinus morphology in Omani patients using computed tomography (CT) evaluations. Methods: Retrospectively, 1220 paranasal sinus CT scans from 610 patients investigated at Sultan Qaboos University Hospital, Oman, from January 2019 to December 2020 were reviewed. The frontal sinus morphology was classified according to the classification proposed by Guerram et al. The Chi-square test was used to determine the influence of sex. Results: With regard to the unilateral occurrence, the most prevalent frontal sinus category observed was medium-sized (13.3%), followed by hyperplasia (7.9%), hypoplasia (5.4%), and aplasia (2%) categories. Similarly, in bilateral occurrence, the most common frontal sinus category observed was medium-sized (53%), followed by hyperplasia (13.1%), hypoplasia (3.4%) and aplasia (2%) categories. Right and left frontal sinus aplasia were observed in 2.1% and 1.8% of cases, respectively. In terms of sex influence, the left unilateral (p<0.01) and the bilateral hypoplasia (p<0.05) were significantly higher in females. On the other hand, the left unilateral (p<0.01) and the bilateral hyperplasia (p<0.05) were higher in males. Conclusions: The baseline data of frontal sinus category frequencies reported in the present study is helpful in the diagnostic evaluation of sinusitis in the clinical setting. The preoperative recognition of frontal sinus types, particularly frontal sinus aplasia in multiplanar CT scans, is crucial to avoid unexpected complications while performing endoscopic sinus surgery.

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Aplasia of Frontal Sinus: Ct Study

Cited by 9 publications

References 10 publications

Incidence of frontal sinus aplasia in Indian population

Incidence of frontal sinus aplasia in Indian population

Diagnostic accuracy of paranasal sinus measurements on multislice computed tomography for sex estimation: A systematic review, meta‐analysis, and meta‐regression

Anatomical variations of frontal sinus pneumatization: A computed tomography-based study

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