Kawashima M, Kobayashi M, Ishizawa K, Fujimaki T. Ectopic cerebellar tissue in the occipital bone: a case report.
J Med Case Rep 2017;
11:231. [PMID:
28823247 PMCID:
PMC5563901 DOI:
10.1186/s13256-017-1394-0]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/19/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND
Ectopic cerebellar tissue located distantly from the normal cerebellum is very rare, and its pathophysiology remains to be elucidated.
CASE PRESENTATION
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.
CONCLUSIONS
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.
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