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Journal of Korean Neurosurgical Society 1996;25(1): 156-162.
Hyperdense Cystic Teratoma in Posterior Cranial Fossa.
Byung Gon Lee, Tae Young Kim, Jong Moon Kim
Department of Neurosurgery, School of Medicine, Wonkwang University, Iri, Korea.
ABSTRACT
A case of a mature, cystic teratoma in posterior cranial fossa presenting as a hyperdense lesion on precontrast computed tomography(CT) is reported. Although typical cysts of epidermoid, dermoid and teratoma appear on CT scans as areas of decreased attenuation, the cyst of this case showed increased density on precontrast CT scan. The underlying cause for this CT appearance is discussed after literature related to teratomas that are located in the midline posterior fossa are reviewed.
Key Words: Cystic teratoma; Hyperdense; Posterior cranial fossa
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