Vol 76, No 2 (2017)
Case report
Published online: 2016-10-10
A previously undescribed variant of the confluence of sinuses
Abstract
An 8-year-old female with a history of chronic headaches and uncertain papilloedema was found to have a variant of the posterior intracranial dural venous sinuses on magnetic resonance imaging assessment of the brain. Magnetic resonance venography included in the imaging revealed a circular formation of the confluence of sinuses and absent right-sided transverse sinus. The confluence of sinuses is a highly variable structure; however, to the authors’ knowledge, a circular confluence of sinuses variant has not been reported in the literature.
Keywords: intracranialanomaliesdura materanatomy
References
- Bisaria KK. Anatomic variations of venous sinuses in the region of the torcular Herophili. J Neurosurg. 1985; 62(1): 90–95.
- Butler H. The development of certain human dural venous sinuses. J Anat. 1957; 91(4): 510–526.
- Curé J, Tassel P, Smith M. Normal and variant anatomy of the dural venous sinuses. Seminars Ultrasound, CT MRI. 1994; 15(6): 499–519.
- Ishizaka H. Anatomical study of the torcular herophili. Neurol Med Chir. 1985; 25(11): 873–880.
- Kaplan H, Browder J, Knightly J, et al. Variations of the cerebral dural sinuses at the torcular herophili. Am J Surg. 1972; 124(4): 456–461.
- Kobayashi K, Matsui O, Suzuki M, et al. Anatomical study of the confluence of the sinuses with contrast-enhanced magnetic resonance venography. Neuroradiology. 2006; 48(5): 307–311.
- Park HKi, Bae HG, Choi SK, et al. Morphological study of sinus flow in the confluence of sinuses. Clin Anat. 2008; 21(4): 294–300.
- Streeter G. The development of the venous sinuses of the dura mater in the human embryo. Am J Anat. 1915; 18(2): 145–178.