Abstract
Importance To identify the anatomical variants of the uncinate process relevant to surgical intervention during the nose and paranasal sinus surgeries. Objective To evaluate the frequency of anatomical variants of the uncinate process in a population of northeast Mexico and compare it with another population. Methods Retrospective study, descriptive and analytical, randomly selected patients with radiological evaluation at Hospital Universitario Dr. José Eleuterio González, Monterrey, Mexico. Images were obtained from the Radiology Department. A total of 149 patients aged from 18 to 79 years with paranasal sinus-CT performed between January 2019 and December 2021 were analyzed. The variables evaluated wereuncinate process anatomical variations by age group, radiological classification of the superior attachment of the uncinate process, and morphological variations. Main outcomes and measures The primary study outcome was the determination of the most frequent insertion of uncinate process in the northeast Mexican population. Results The 149 CT scans comprised71 females with a mean age of 38.28 ± 16.7 years and 78 males, with a mean age of 41.8 ± 15.01 years. The most frequent uncinate process of superior attachment was type one, observed in 57.7% of males (n=45) and 50.7% of females (n=37) (p=0.494). Type onewas most observed on the right side (57.7%). Type four was the second most common type, present in 12.8% of males (n=10) and 12.7% of females (n=9) (p=0.82). Conclusion Knowledge about the types of variations in the insertion of the uncinate process is fundamental prior to any endoscopic sinus surgery. The surgeon must be familiar with this detail when approaching patients with sinonasal pathology.
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