Asymmetry of the anterior ethmoidal artery in relation to the anterior skull base: a population-based study of 500 arteries

• Published in: Brazilian journal of otorhinolaryngology 2024-05, Vol.90 (3), p.101412-101412, Article 101412
• Main Authors: Beraldin, Bernard, Isolan, Gustavo Rassier, Mostardeiro, Lucas Rodrigues, Silva, Vagner Antonio Rodrigues, Lavinsky, Joel
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Aged; Aged, 80 and over; Arteries - anatomy & histology; Arteries - diagnostic imaging; Computed tomography; Epistaxis; Ethmoid Sinus - anatomy & histology; Ethmoid Sinus - blood supply; Ethmoid Sinus - diagnostic imaging; Female; Humans; Male; Middle Aged; Original; OTORHINOLARYNGOLOGY; Paranasal sinuses; Skull base; Skull Base - anatomy & histology; Skull Base - blood supply; Skull Base - diagnostic imaging; Tomography, X-Ray Computed; Young Adult
• ISSN: 1808-8694; 1808-8686; 1808-8686
• DOI: 10.1016/j.bjorl.2024.101412

•We analyzed the largest sample of AEA with computed tomography scans.•First study of the distance between the AEA and SB using computed tomography.•We analyzed AEA lateral asymmetry within the same individual. To analyze variability in the distance between the Anterior Ethmoidal Artery (AEA) and the anterior Skull Base (SB), as well as the frequency of lateral asymmetry in a Latin American population using computed tomography. A total of 250 computed tomography scans of paranasal sinuses in coronal reconstruction (500 AEAs) were analyzed. After determining the image with the best anatomical view of the artery, the distance between its midpoint and the ethmoidal roof was measured, and the images were independently interpreted by 2 physicians. Of the 500 AEAs, 279 (55.8%) adhered to or passed through the SB at a distance of 0mm. A total of 221 AEAs (44.2%) were at some distance from the SB, of which 107 (48.4%) were on the right side, ranging from 1.18 to 6.75mm, and 114 (51.5%) were on the left side, ranging from 1.15 to 6.04mm. The overall mean distance between the AEA and SB was 1.22 (SD=1.57) mm, increasing to 2.77 (SD=1.14) when the arteries adhered to the SB were excluded. Seventy-six individuals (30.4%) had a lateral distance variation > 1mm. Our study includes the largest sample of AEA analyzed with computed tomography scans of paranasal sinuses. There was some distance between the AEA and SB in almost half the patients, and we found a high rate of lateral variability >1mm. Level 3.