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KMID : 0858520170210030183
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Journal of the Korean Society of Magnetic Resonance in Medicine
2017 Volume.21 No. 3 p.183 ~ p.186
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Hemorrhagic Rupture of Arachnoid Cyst into the Intradural Space
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Choi Sun-Ju
Lee Hui-Joong
Hahm Myong-Hun
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Abstract
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A 7-year-old boy, diagnosed with an arachnoid cyst and subdural effusion on initial MRI, was admitted with left limb weakness and no history of head trauma. A subsequent follow-up MRI showed different stages of hematoma within multilayered enhancing membranes and in the arachnoid cyst, which was separated by the cerebrospinal fluid cleft. Craniotomy and fenestration of the cyst wall and hematoma removal were performed. The patient was diagnosed as a having a hemorrhagic rupture of an arachnoid cyst into the intradural space, probably via some one-way valve-like defect, based on the MRI and surgical findings. The MRI features and possible mechanism of this rare disease are discussed within the literature review.
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KEYWORD
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Arachnoid cyst, Hemorrhage, Dura mater, Magnetic resonance imaging, Hygroma
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