title: Peduncular hallucinosis following microvascular decompression for trigeminal neuralgia without direct brainstem injury: case report.
abstract: We report a 68-year-old woman who experienced visual hallucinations diagnosed as peduncular hallucinosis (PH) following microvascular decompression for trigeminal neuralgia. Postoperative MRI showed only ischemic oedema of the left cerebellar hemisphere due to retraction. Our case first reveals that PH can be induced without direct brainstem injury, instead possibly by a cerebellar lesion.
authors.affiliation: Department of Neurosurgery, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan. yosateke@ndmc.ac.jp
authors.forename: Takahito
authors.initials: T
authors.lastname: Miyazawa
authors.forename: Masanori
authors.initials: M
authors.lastname: Ito
authors.forename: Yukimasa
authors.initials: Y
authors.lastname: Yasumoto
mesh_terms: D000368:Aged; D001929:Brain Edema / Q000150:complications / Q000503:physiopathology; D002545:Brain Ischemia / Q000150:complications / Q000503:physiopathology; D001933:Brain Stem / Q000293:injuries / Q000503:physiopathology; D002526:Cerebellar Diseases / Q000150:complications* / Q000503:physiopathology; D002531:Cerebellum / Q000293:injuries* / Q000473:pathology / Q000503:physiopathology; D002550:Cerebral Veins / Q000293:injuries / Q000503:physiopathology / Q000601:surgery; D019299:Decompression, Surgical / Q000009:adverse effects; D005260:Female; D006212:Hallucinations / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D009434:Neural Pathways / Q000503:physiopathology; D019635:Neurosurgical Procedures / Q000009:adverse effects*; D011183:Postoperative Complications / Q000209:etiology* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D014276:Trigeminal Nerve / Q000098:blood supply / Q000473:pathology / Q000601:surgery; D014277:Trigeminal Neuralgia / Q000209:etiology / Q000601:surgery