Mesencephalic cyst in fourth ventricle causing obstructive hydrocephalus.
D001932:Brain Neoplasms / Q000150:complications*; D002551:Cerebral Ventricle Neoplasms; D003560:Cysts; D020546:Fourth Ventricle; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology*; D008636:Mesencephalon; D009369:Neoplasms
BRAIN NEOPLASMS/complications; CEREBRAL VENTRICLES/neoplasms; CYSTS; HYDROCEPHALUS/etiology; MESENCEPHALON/neoplasms