Arachnoid villi obstruction in the cochlear aqueduct.
D001099:Arachnoid / Q000473:pathology*; D003051:Cochlea / Q000473:pathology*; D003052:Cochlear Aqueduct / Q000473:pathology*; D005355:Fibrosis; D006801:Humans; D007759:Labyrinth Diseases / Q000473:pathology*