The Straight Sinus in the Human Cerebral Venous System: An Anatomical Evaluation Using Magnetic Resonance Venography

Yıl 2025, Cilt: 35 Sayı: 6, 1246 - 1252, 31.12.2025

Murat İnci , Zeliha Fazlıoğulları , Ahmet Kağan Karabulut , Nadire Ünver Doğan , Alaaddin Nayman

https://doi.org/10.54005/geneltip.1735536

Öz

Aim: In our study, we aimed to evaluate the anatomical variations of the straight sinus, its angulations and its constituent structures by magnetic resonance venography (MRV).
Methods: In this retrospective study, MRV data of patients admitted to our hospital with various complications were evaluated. The ages of the patients ranged from 10 to 73 years and the types of termination of the straight sinus in the confluence of sinuses and the contributions of the inferior sagittal sinus and great cerbral vein to the straight sinus were analyzed in 200 patients, 111 females and 89 males.
Results: When the termination types of the cases were analyzed, 34% of the patients had complete intersection (type I), 55% had partial intersection (type II) and 11% had non-intersecting variation (type III). The inferior sagittal sinus, which participates in the formation of the straight sinus, was aplasic in 53 patients (26.5%) and hypoplasic in 67 patients (33.5%). It was clearly visualized in the remaining 80 patients (40%). The great cerbral vein was present in all cases and participated in the formation of the straight sinus.
Conclusion: The morphologic structures of the dural venous sinuses may differ not only between individuals but even between the two cerebral hemispheres of the same person, depending on embryologic development. A thorough knowledge of these anatomical variations provides guidance to surgeons, particularly during posterior cranial fossa operations, and contributes to the prevention of possible complications.

Anahtar Kelimeler

Straight sinus , superior sagittal sinus , great cerebral vein , variation , magnetic resonance venography

İnsan Beyin Venöz Sisteminde Sinus Rectus: Manyetik Rezonans Venografi ile Anatomik Bir Değerlendirme

Öz

Amaç: Çalışmamızda straight sinus’un anatomik varyasyonlarını, açıldığı oluşumları ve kendisini oluşturan yapıları manyetik rezonans venografi (MRV) ile değerlendirmeyi amaçladık.
Gereç ve Yöntemler: Retrospektif olarak planlanan çalışmamızda, hastanemize çeşitli komplikasyonlar ile başvuran hastaların MRV verileri değerlendirildi. Hastaların yaşları, 10 ile 73 arasında değişmekte olup, 111’i kadın 89’u erkek olacak şekilde 200 hastada, straight sinus’un, confluence of sinuses’da sonlanma tipleri ve straight sinus’u oluşturan inferior sagittal sinus ve great cerbral vein’nin katkıları incelendi.
Bulgular: Vakaların sonlanma tiplerine bakıldığında; hastaların %34’ünde tam kesişim (tip I), %55’inde kısmi kesişim (tip II), %11’inde ise kesişmeyen varyasyon (tip III) bulunmuştur. Straight sinus’un oluşumuna katılan inferior sagittal sinus, 53 hastada aplazik (%26,5), 67 hastada hipoplazik (%33,5) olarak görüldü. Geriye kalan 80 hastada ise net olarak gözlendi (%40). Great cerbral vein’nin vakaların tamamında bulunduğu ve straight sinus oluşumuna katıldığı belirlendi.
Sonuçlar: Sinus durae matris’lerin morfolojik yapıları embriyolojik gelişime bağlı olarak sadece kişiler arasında değil, aynı kişinin her iki serebral hemisferi arasında bile farklılıklar gösterebilir. Bu anatomik varyasyonların iyi bilinmesi, özellikle fossa cranii posterior bölgesine yönelik operasyonlarda cerrahlara yol göstererek olası komplikasyonların önlenmesine katkı sağlamaktadır.

Anahtar Kelimeler

Sinus rectus , sinus sagittalis superior , vena magna cerebri , varyasyon , manyetik rezonans venografi.

Kaynakça

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