Haytham Alzeadi
Qassim University, Saudi ArabiaTitle: Evaluation of the Keros Classification of Olfactory Fossa by CT Scan in Qassim Region
Abstract
Endoscopic sinus surgery is now the most often utilized surgical procedure for treating chronic sinonasal disorders. Therefore, anatomical knowledge of its variations is required to avoid serious postoperative complications. Our study aimed to evaluate Keros types and their incidence by evaluating the olfactory fossa depth according to the Keros classification on paranasal sinus CT scans in the Qassim region. It was a cross-sectional study conducted between January 2018 and January 2021 on 148 patients who had a non-enhanced paranasal sinus CT scan evaluated by a consultant radiologist using the PACS software. Statistical analysis was performed using the statistical software package SPSS version 25. We found that the average depth of the right olfactory fossa was 5.1 mm with a standard deviation of 1.756 while it was 5.28 on the left side with a standard deviation of 1.66. According to the Keros classification, out of a total of 296 OF, type 1 was found in 84 (28.4%), type 2 in 188 (63.5%), and type 3 in 24 (8.1%). Consequently, the majority of cases were of type 2. Also, we found that type 2 was the most common on both sides in males, whereas, in females, type 2 was the most common on the left side and type 1 on the right side. Our conclusion emphasized on the importance of the study of Keros classification to evaluate the anatomy and give the surgeon knowledge about the depth of the olfactory fossa. Thus, a preoperative CT scan of the paranasal sinus is critical to ensure that the surgical approach is properly planned, and possible surgical complications related to the anatomy of this area can be prevented.
Biography
Haytham is a senior medical student at Qassim University. He is interested in research and preventive medicine. He has 2 publications and many others on-going research.
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