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

Shrestha, Bikash Lal; Karmacharya, Sameer; Shrestha, Krishna Sundar

doi:10.3126/bjhs.v3i3.22193

Cited by 2 publications

(2 citation statements)

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“…In our study, the most common were Keros type II (71.9%), followed by Keros type I (17.8%), Keros type III (10.3%). While a few studies reported the most common Keros type I [1,2,7,20,21], most studies were the most common type II [3][4][5]8,[13][14][15][17][18][19][22][23][24][25][26][27][28], consistent with our study. The distributions according to the Keros classification in the studies conducted in the Turkish population are presented in Table 6.…”

Section: Discussionsupporting

confidence: 90%

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Radiological Evaluation of Olfactory Fossa with Cone-Beam Computed Tomography

Keşkek¹,

Aytuğar

2021

JOMR

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Objectives:The aim of this retrospective study was to evaluate the morphology of the olfactory fossa in the Turkish population using cone-beam computed tomography according to Keros classification and to investigate the effect of age, gender and nasal septum deviation on the olfactory fossa. Material and Methods: Olfactory fossa (OF) were analysed in coronal sections on cone-beam computed tomography images of 385 individuals. Nasal floor (NF), medial ethmoid roof point (MERP), cribriform plate (CP) heights, CP depth and width, OF width, lateral lamella-cribriform plate angle (LLCPA), and nasal septum deviation angle (NSDA) were measured. Keros and Gera classifications were made according to the measurements. Results: According to the Keros classification, 137 of 770 OFs were type I (17.8%), 554 (71.9%) were type II, and 79 (10.3%) were type III. The most common combination was Keros type II and Gera type II (45.6%). There was a positive correlation between CP depth and LLCP angle, NF, MERP and CP heights (P ≤ 0.05). NF, MERP, and CP heights, CP depth and LLCP angle were statistically significant differences according to Keros classification (P ≤ 0.05). Only the right LLCP angle showed a statistically significant difference according to the NSD sides (P = 0.014). Conclusions:The study shows that the lateral lamella-cribriform plate angle increases as the cribriform plate depth increases. This result suggests that it may moderate the risk during endoscopic sinus surgery. Also, according to the nasal septum deviation sides, the dimensions of the olfactory fossa did not change significantly, except for the lateral lamella-cribriform plate angle.

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Section: Discussionsupporting

confidence: 90%

“…There is a lateral lamella of the cribriform plate (LLCP) to which it is articulated medially. LLCP is the area most susceptible to iatrogenic damage during endoscopic sinus surgery (ESS) because of its very thin bone structure [1,2]. ESS is a treatment method used in the treatment of chronic rhinosinusitis.…”

Section: Introductionmentioning

confidence: 99%

Radiological Evaluation of Olfactory Fossa with Cone-Beam Computed Tomography

Keşkek¹,

Aytuğar

2021

JOMR

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Evaluation of the Olfactory Fossa With Computed Tomography for Endoscopic Surgery

SERİNDERE

2023

Kocatepe Tıp Dergisi

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OBJECTIVE: The aim of this case-control study is to assess the olfactory fossa (OF) anatomy in computed tomography (CT) images of patients with clinical and radiological diagnoses of sinusitis as well as those of patients of a control group. MATERIAL AND METHODS: 100 patients without sinusitis and 100 patients with a clinical and radiological diagnosis of chronic sinusitis who were referred for CT scans were included. The OF types were recorded according to the Keros classification. Medial ethmoid roof point (MERP) height, cribriform plate (CP) height and width, OF depth and width, and angle of lateral lamella-cribriform plate (ALLCP) were also measured. RESULTS: The mean depth of OF was 5.9 mm and 6.1 mm on the right and left sides, respectively. The most common type was type 2 on the right (51%) and left (45.5%) sides. The mean height of the MERP was 27.9 mm in both the right and left sides. The mean height of CP was 22.0 mm and 21.8 mm on the right and left sides, respectively. The mean width of the OF was 4.1 mm and 3.4 mm on the right and left sides, respectively. The mean width of CP was 2.8 mm and 2.4 mm on the right and left sides, respectively.The mean right and left ALLCP were 77.6° and 79.1°, respectively. No significant difference was found between the parameters in the case and control groups. CONCLUSIONS: According to the results, the presence of sinusitis has no effect on the anatomy of the OF. However, preoperative evaluation of the OF anatomy is very important in minimizing complications that may occur during functional endoscopic sinus surgery (FESS).

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

Cited by 2 publications

References 10 publications

Radiological Evaluation of Olfactory Fossa with Cone-Beam Computed Tomography

Radiological Evaluation of Olfactory Fossa with Cone-Beam Computed Tomography

Evaluation of the Olfactory Fossa With Computed Tomography for Endoscopic Surgery

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