The veins of the posterior fossa--superior or galenic draining group.
D001932:Brain Neoplasms / Q000175:diagnosis; D001933:Brain Stem / Q000098:blood supply*; D002531:Cerebellum / Q000098:blood supply*; D002533:Cerebral Angiography; D006801:Humans; D014680:Veins / Q000033:anatomy & histology*