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Journal of Korean Neurosurgical Society 1995;24(11): 1413-1417. |
| A Case of Ependymal Cyst. |
| Yong An, Sang Hyung Lee, Dae Hee Han |
| Department of Neurosurgery, College of Medicine, Seoul National University, Seoul, Korea. |
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| ABSTRACT |
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Ependymal cysts are rare entities that have evoked much controversies regarding their pathogenesis. We report a case of an intracerebral ependymal cyst associated with periventricular heterotopia and microgyria in a 16-year-old girl who was admitted in our institution for evaluation of a 4-year history of seizure. Neurological examination revealed nothing remarkable. Brain magnetic resonance imaging(MRI) showed a cystic mass in the right temporal lobe communicating with the posterior horn of the lateral ventricle by a narrow fistula. Also, Periventricular heterotopia and microgyria of the right cerebral hemisphere were also seen. A right temporal lobectomy that included complete exision of the cyst was performed;during surgery, the fistula connecting the cyst with the lateral ventricle was noted in the posterior temporal lobe. Microscpic examination of the specimen confirmed that the lining of the cyst consisted of simple, ciliated cuboidal epithelium that was similar to that in an ependyma and the lining showed no basement membrane. Adjacent to the cyst, heterotopic gray matter was seen and the cortex of the temporal lobe showed ischemic changes. Postoperatively, the patient made unremarkable recovery except for intermittent episodes of seizure. The clinicopathological features, radiological findings and surgical treatments are discussed in the context of the literature. |
| Key Words:
Ependymal cyst; Heterotopia; Microgyria; Fistula |
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