Superior Sagittal Sinus Bifurcation Variation

It is important to define the dural sinuses during assessment of the clinical presentations in neurosurgery and neurology and especially before performing surgical interventions involving the brain. Variations of dural sinuses are frequently seen in confluence of the sinuses. In our case, cranial venous MRI angiography of a 49-year-old male patient demonstrated that the superior sagittal sinus bifurcated near sutura lambdoidea of the cranium. These coursed as two separate branches and drained into the transverse sinus without forming the confluence of the sinuses. Sinus rectus joined to the left transverse sinus. We think that this unusual variation which was not reported before will contribute to the assessment of the neurologic presentations and also to the surgical interventions