title: Echinococcosis presenting as an otogenic brain abscess: an unusual lesion of the middle ear cleft and temporal lobe.
abstract: This paper presents a case of a 28-year-old male with a seizure episode and a 4-year history of intermittent tinnitus on the left ear. On computed tomography and magnetic resonance imaging, a density with rim enhancement was found at the temporal lobe, associated with mastoid tegmen destruction and middle ear mass, indicating cholesteatoma with complicating brain abscess. Evacuation of the brain abscess was performed with a combined otolaryngologic and neurosurgical procedures (canal wall-down mastoidectomy and temporal craniotomy). The pathology turned out to be infestation with Echinococcus granulosus.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital (University Hospital), University of Berne, 3010 Berne, Switzerland.
authors.forename: Erasmo Gonzalo D V
authors.initials: EG
authors.lastname: Llanes
authors.forename: Alexander
authors.initials: A
authors.lastname: Stibal
authors.forename: Konrad
authors.initials: K
authors.lastname: Mühlethaler
authors.forename: Istvan
authors.initials: I
authors.lastname: Vajtai
authors.forename: Rudolf
authors.initials: R
authors.lastname: Häusler
authors.forename: Marco
authors.initials: M
authors.lastname: Caversaccio
mesh_terms: D000328:Adult; D000818:Animals; D001301:Audiometry, Pure-Tone; D001922:Brain Abscess / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D020807:Central Nervous System Parasitic Infections / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D018424:Cholesteatoma, Middle Ear / Q000175:diagnosis; D003399:Craniotomy; D003937:Diagnosis, Differential; D004427:Ear Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004432:Ear, Middle / Q000473:pathology / Q000601:surgery; D004443:Echinococcosis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D048209:Echinococcus granulosus; D048210:Echinococcus multilocularis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008416:Mastoid / Q000473:pathology / Q000601:surgery; D009998:Ossicular Prosthesis; D038781:Otoscopy; D013702:Temporal Lobe / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed