Normal anatomical variation and asymmetry of the Galenic venous system.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008875:Middle Aged; D010690:Phlebography; D014680:Veins / Q000033:anatomy & histology*