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I.はじめに
Diastematomyeliaは,脊椎管に関連した脊椎骨と神経軸の先天性発生異常により,脊髄,脊椎管が2つに分離したもので,通常,骨性あるいは軟骨性,線維性の中隔を伴う.
今回,われわれはMRIが,その診断,病態の把握に有用であったdiastematomyeliaの2症例を経験したので,若干の文献的考察を加えて報告する.
We experienced two cases of diastematomyelia. Magnetic Resonance Imaging (MRI) was very useful in definitive diagnosis and detection of associated abnor-malities.
Case 1 was a 5-year-old boy. He was admitted be-cause of foot-length discrepancy. He also presented sco-liosis, hypertrichosis and pigmentation in his back skin, and foot deformity. Myelography and CT myelography revealed bony septum and split cord at midthoracic level, and two separated taut filum terminales in the lumbosacral region. Sagittal MR image delineated the taut filum terminale adhering to the lipomatous tissue at the end of dural sac.
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