脊髄悪性リンパ腫—2例報告と文献的考察

Spinal Epidural Malignant Lymphoma: Report of two cases and review of the literature

I．はじめに

　脊髄の悪性リンパ腫は欧米ではありふれた硬膜外腫瘍の1つで，転移性癌についで多く，全脊髄腫瘍の10％前後を占めるといわれる^{1, 10）}．しかし本邦では稀な疾患とされ，原発性の脊髄悪性リンパ腫に限ると今までに数編の報告が見られるのみである^18）．

　最近，われわれは原発性の脊髄悪性リンパ腫（非ホジキンリンパ腫）と考えられた2症例を経験したので文献的考察を加えて報告する．また，この疾患に特有なCT所見を検討した論文は，われわれの調べ得たかぎり見当らない．そこで，この2症例で得られた所見についても詳細に報告する．

Spinal epidural lymphoma is rarely found in Japan, comparing with Europe and America. We experi-enced two cases, who were suffered from intractable pain and gait disturbance. In both cases, a wide laminectomy and partial removal of the epidural tumor were performed because of the deteriorated paraparesis. After that, they were able to walk without support. These epidural tumors were sup-posed to be primary spinal epidural lymphomas, judging from the clinical course and some other examinations, that is, Gallium scintigram and CT scan, etc.

There were few reports that mentioned CT findingsof spinal lymphomas.