Computed tomographic Assessment of Lateral Lamella of Cribiform Plate and Comparison of Depth of Olfactory Fossa

Bista, Meera; Maharjan, M; Kafle, Prakash; Shrestha, Suvash; Kc, Toran

doi:10.31729/jnma.104

Cited by 14 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding corroborated those reported elsewhere [14, 17, 23–26]. We have found in the literature only one study [27], where type I was more frequent than type II, but it should be emphasized that their sample was the smallest (i.e., 50 MSCT examinations) among all the studies reviewed and also presented a prevalence of children with no balanced age distribution, which might have influenced the results. It should be also emphasized that our study used a sample of 174 CBCT examinations, which was quantitatively expressive compared to other studies, in order to investigate types of olfactory based on the Keros classification.…”

Section: Discussionsupporting

confidence: 91%

Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa

Costa

Paixão

Gonçalves

et al. 2019

International Journal of Dentistry

View full text Add to dashboard Cite

This study aimed to investigate the olfactory fossa according to the Keros classification using cone beam computed tomography. This cross-sectional study analysed cone beam computed tomography images selected from a database belonging to a radiology centre. The scans of 174 healthy patients were analysed by using the Xoran software. Gender, age, and side were correlated with the Keros classification. The mean age of the 174 patients was 45.3 years. The most prevalent Keros classification was type II (65.52%), followed by type III (20.69%) and type I (13.79%). No significant differences were found between Keros classification and the variables age, right side (pvalue = 0.4620), and left side (pvalue = 0.5709). There were also no significant differences between gender and the variables right side (pvalue = 0.1421) and left side (pvalue = 0.2136). Based on these results, we suggest that cone beam computed tomography can be recommended for analysis of the anterior skull base. Keros type II was the most prevalent type in our sample.

show abstract

Section: Discussionsupporting

confidence: 91%

Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa

Costa

Paixão

Gonçalves

et al. 2019

International Journal of Dentistry

View full text Add to dashboard Cite

show abstract

“…Unlike to Keros study [9], and similar studies [10,15,[18][19][20][21][22][23][24][25][26][27][28][29][30][31] our findings showed that Type I is the most common type (71.0%), followed by Type II (27.4%) and the Type III (1.6%) of the cases, respectively. However, our findings inline to results reported in studies from Philippine [16], USA [32], UK [33], Nepal [34], Malaysia [35], and Egypt [36] which confirms that the Keros type I is the most common. Moreover, two studies from UK [37] and UK [38] found that Keros type III was the most common.…”

Section: Discussionsupporting

confidence: 91%

“…Comparing the difference in olfactory fossa depth between both sides, it was found that the right side was more in-depth than the left side in 8 patients (> 1mm), and in a similar number of patients, the left side was more in-depth than the right side. Previous studies from Brazil [10], Turkey [19], India [28] [29], USA [32], and Nepal [34], showed that the right side was more in-depth than the left side with the percentages of 56.0%, 54.2%, 69.57%, 54.0%, 56.0% of asymmetric cases, respectively. The left side was deeper in other studies conducted in Malaysia [35],…”

Section: Discussionmentioning

confidence: 99%

Computed tomography assessment of the ethmoid roof based on Keros classification in Iraqi patients undergoing functional endoscopic sinus surgery

2021

View full text Add to dashboard Cite

Background: Among the most popular methods employed to classify the depth of the olfactory fossa is Keros classification. This study aims to assess Keros classification of the ethmoid roof, any possible association between Keros types and gender, and the incidence of asymmetry between right and left sides among Iraqi patients. Methods: A retrospective cross-sectional study was conducted at Al-Shaheed Gazi Al-Hariri Teaching Hospital, Medical City, Baghdad, Iraq. The archived reports and the CT scans images (nose and paranasal sinuses) of 126 patients who have undergone functional endoscopic sinus surgery between January 2019 and January 2020 were reviewed. Univariate and bivariate statistical analysis was performed using SPSS version 24. The statistically significant was considered at less than 0.05. Results: More than half of patients were females (54.0%) with a mean age of 31.52 ± 11.38 (SD) years (range: 10-57 years). Among the total patients, the mean depth of olfactory fossa (OF) was 3.58 ± 0.02 mm. Results showed that Keros type I was the most common type (71.0%), followed by type II (27.4%) and type III (1.6%) respectively. The difference in the olfactory fossa depth between the right and left sides was ≥ 1 mm in 16 (12.7%) patients and < 1 mm in 110 (87.3%) patients. Moreover, there was no significant relation between symmetry/asymmetry and gender ( p-value > 0.05). Conclusion: Keros type I was the most common type, which carries the lowest risk of inadvertent intracranial injury during endoscopic sinus surgery; besides the relatively low percentage of asymmetry in the depth of the two olfactory fossae among patients, surgeons should always be cautious during surgery to avoid iatrogenic injury concerning the thin lateral lamella of the cribriform plate.

show abstract

“…Our study showed that the height of LLCP on right side was 3.331+/-5.010mm, whereas on le side, it was 2.845+/-1.084mm.This differs from other studies as most of the 10,[12][13][14][15][16][17][18][19][20][21][22] studies had LLCP of >4mm.…”

Section: Discussionmentioning

confidence: 72%

Radiological Analysis of Olfactory Fossa Depth: A Tertiary Care Hospital Based Study

Shrestha

Karmacharya

Shrestha

2019

Birat J. Health Sci.

View full text Add to dashboard Cite

Introduction: Computed tomogram (CT) of nose and paranasal sinuses provides the detailed knowledge of depth of olfactory fossa as per Keros' classification, which is important in endoscopic sinus surgery. Objective: To analyze the types and frequency of depth of olfactory fossa in Nepalese population. Methodology: This was a longitudinal study conducted from 1 May to 30 August 2018. Coronal CT scans of nose and paranasal sinuses were taken for analysis of olfactory fossa depth. The landmarks like infraorbital foramen, point of articulation of medial ethmoidal roof with lateral lamella of cribriform plate (MERP) and lowest point on the cribriform plate (CP) were taken. The lateral lamella of cribriform plate (LLCP) was calculated by subtracting CP height from MERP height (MERP-CP = LLCP). Results: There were total 101 patients included. The distribution of age was 33.72 ± 15.15 years. The keros' type I was the most common (86.1%). Regarding the olfactory fossa depth, right side was deeper in male whereas in females, the left side was deeper, but overall right side was deeper in 52(51.5%) patients. Conclusions: Type I Keros' was the most common whereas type III Keros' was the least common. A deep olfactory fossa is more common on right.

show abstract

Computed tomographic Assessment of Lateral Lamella of Cribiform Plate and Comparison of Depth of Olfactory Fossa

Cited by 14 publications

References 3 publications

Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa

Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa

Computed tomography assessment of the ethmoid roof based on Keros classification in Iraqi patients undergoing functional endoscopic sinus surgery

Radiological Analysis of Olfactory Fossa Depth: A Tertiary Care Hospital Based Study

Contact Info

Product

Resources

About