title: Craniospinal radiotherapy: where does the thecal sac end?
authors.forename: R
authors.initials: R
authors.lastname: Counsell
authors.forename: J
authors.initials: J
authors.lastname: Small
authors.forename: M V
authors.initials: MV
authors.lastname: Williams
mesh_terms: D016543:Central Nervous System Neoplasms / Q000532:radiotherapy*; D002648:Child; D006801:Humans; D012447:Sacrum / Q000033:anatomy & histology*