A previously undescribed variant of the confluence of sinuses.
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.
Department of Anatomical Sciences, St. George's University, Grenada, West Indies, Grenada. gtardieu@sgu.edu.
G G
GG
Tardieu
R J
RJ
Oskouian
M
M
Loukas
R S
RS
Tubbs
D002648:Child; D003392:Cranial Sinuses / Q000002:abnormalities*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging
anatomy; anomalies; dura mater; intracranial