title: THE PNEUMOENCEPHALOGRAPHIC PICTURE OF SUBTENTORIAL ARACHNOID SPACES IN NORMAL SUBJECTS AND IN EXPANSIVE LESIONS.
mesh_terms: D001099:Arachnoid; D035843:Biomedical Research; D001932:Brain Neoplasms; D014695:Cerebral Ventriculography; D003388:Cranial Fossa, Posterior; D006801:Humans; D011011:Pneumoencephalography; D011859:Radiography; D012886:Skull; D013346:Subarachnoid Space
keywords: BRAIN NEOPLASMS; CLINICAL RESEARCH; CRANIAL FOSSA, POSTERIOR; SKULL; SUBARACHNOID SPACE; VENTRICULOGRAPHY