Ectopic cerebellar tissue in the occipital bone: a case report

Ectopic cerebellar tissue located distantly from the normal cerebellum is very rare, and its pathophysiology remains to be elucidated. We report an extremely rare case of intraosseous ectopic cerebellum detected incidentally at suboccipital craniotomy in a 46-year-old Japanese woman with hemifacial...

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Bibliographic Details
Published in:Journal of medical case reports 2017-08, Vol.11 (1), p.231-231, Article 231
Main Authors: Kawashima, Mariko, Kobayashi, Masahito, Ishizawa, Keisuke, Fujimaki, Takamitsu
Format: Article
Language:English
Subjects:
Case Report
Cerebellar ataxia
Cerebral Cortex - pathology
Cerebral Ventricle Neoplasms - pathology
Choristoma - complications
Choristoma - pathology
Craniotomy
Ectopic cerebellum
Female
Glioneuronal ectopia
Health aspects
Hemifacial Spasm - physiopathology
Hemifacial Spasm - surgery
Humans
Incidental Findings
Intraosseous lesion
Middle Aged
Occipital bone
Occipital Bone - pathology
Pathological physiology
Risk factors
Subarachnoid Space - pathology
Tomography, X-Ray Computed
Treatment Outcome
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Summary:Ectopic cerebellar tissue located distantly from the normal cerebellum is very rare, and its pathophysiology remains to be elucidated. We report an extremely rare case of intraosseous ectopic cerebellum detected incidentally at suboccipital craniotomy in a 46-year-old Japanese woman with hemifacial spasm. She had a small bone defect in the occipital bone, which contained a tiny area of soft tissue surrounded by cerebrospinal fluid connecting to the normal subarachnoid space through a dural opening. Histopathology demonstrated cerebellar cortex tissue consisting of molecular and granular cell layers. This is the first report of glioneuronal ectopia within the skull bone separated from normal brain tissue, and it is important to distinguish this entity from other osteolytic lesions.
ISSN:1752-1947
1752-1947
DOI:10.1186/s13256-017-1394-0