Radiological classification of azygos anterior cerebral artery and evaluation of the accompanying vascular anomalies
Küçük Resim Yok
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer France
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Purpose There is not a classification of azygos anterior cerebral artery (ACA) based on anatomical branching levels in the literature. In the present study, a classification of azygos ACA was made based on radiological imaging for a common terminology, and frequency, accompanying vascular anomalies and malformations were investigated. Methods A total of 4913 cases who had brain CTA, MRA, contrast-enhanced MRI and DSA in January 2010-January 2020 period were screened for the study. Based on anatomical branching level, azygos ACAs were classified into four groups. Aneurysms, anomalies and malformations accompanying azygos ACA were identified. The associations of azygos ACA types with the presence of aneurysm or ACA A1 segment anomalies were investigated. Results Azygos ACA was observed in 57 cases (29 male and 28 female) and frequency of azygos ACA was 1.16%. Average age of the cases with ACA was 56.19 +/- 19.65 years. Forty-eight of the cases had type C azygos ACA, four cases type B, four cases type D and one case type A azygos ACA. A total of nine intracranial aneurysms were identified in seven of the cases (12.28%). Five of the aneurysms were located in MCA and four in distal ACA. Most common vascular anomalies accompanying azygos ACA were unilateral vertebral artery hypoplasia and ACA A1 segment hypoplasia. Azygos types did not have significant correlations with the presence of aneurysms or ACA A1 segmental anomalies (p = 0.683 andp = 0.949, respectively). Conclusion Azygos ACA is a rare variation, but it could be accompanied by aneurysms or other vascular anomalies.
Açıklama
Anahtar Kelimeler
Aneurysm, Azygos anterior cerebral artery, Computerized tomography angiography, Magnetic resonance angiography, Unpaired pericallosal artery
Kaynak
Surgical and Radiologic Anatomy
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
42
Sayı
11
