title: Conservative management of a hematoma in the fourth ventricle.
mesh_terms: D000293:Adolescent; D002552:Cerebral Ventricles / Q000098:blood supply*; D014695:Cerebral Ventriculography; D005500:Follow-Up Studies; D006213:Hallucinogens / Q000009:adverse effects / Q000494:pharmacology; D006408:Hematoma, Subdural / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male; D011011:Pneumoencephalography; D011149:Pons / Q000098:blood supply; D013345:Subarachnoid Hemorrhage / Q000150:complications; D019966:Substance-Related Disorders
chemical_list: D006213:Hallucinogens