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頚胸椎移行部に発生した黄色靱帯内血腫によって対麻痺を来し,椎弓切除および黄色靱帯および血腫除去術を行った1例を経験した.症例は62歳の男性で,近医で温熱療法中に突然の背部痛を自覚した.高血圧も認めたため,近医に経過観察入院した.翌日から歩行困難が出現したため,3日後に当科を紹介され受診した.徒手筋力テスト(MMT)[2]~[4]と両下肢の筋力低下が進行したため,発症から5日目に当科入院となった.入院翌日から,さらに両下肢麻痺がMMT[1]~[2]と進行した.脊髄造影,頚胸移行部のMRIで急性硬膜外血腫と診断された.同日C7-Th2椎弓切除で黄色靱帯および血腫除去術を行った.術後翌日から両下肢筋力が回復し,術後1年で杖歩行が可能となった.
We report a case of paraplegia caused by hematoma of the cervicothoracic ligamentum flavum. The patient was a 62-year-old man who was admitted to a hospital with acute back pain during thermal therapy. The next day the developed walking difficulty and after three days he was examined at our institution, where he was admitted in the fifth day due to its progression. He was diagnosed with on acute epidural hematoma of the cervicothoracic level on MRI. Hematoma exenteration was performed and recovery of the muscle power of both lower limbs was obtained.
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