title: Arachnoid cyst of the posterior fossa associated with hydrocephalus.
mesh_terms: D000328:Adult; D001099:Arachnoid / Q000000981:diagnostic imaging; D014695:Cerebral Ventriculography; D003560:Cysts / Q000175:diagnosis*; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis*; D007204:Indium; D008297:Male; D011011:Pneumoencephalography; D011868:Radioisotopes; D014057:Tomography, X-Ray Computed
chemical_list: D011868:Radioisotopes; D007204:Indium