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- Abstract 文献概要
- 1ページ目 Look Inside
I.はじめに
馬尾神経腫瘍の多くは原発性腫瘍であり転移性腫瘍は極めて稀である.文献的に渉猟し得た限りでは7例の報告をみるのみであり3,4,10,11),Grawitz腫瘍による転移例の報告はない.今回,われわれは馬尾神経に発生した転移性Grawitz腫瘍の1例を経験したので症例を供覧するとともに若干の文献的考察を加えて報告する.
A case of Grawitz's tumor metastasizing to the cauda equina is presented. A 51-year-old male was hospital-ized due to severe low back pain radiating to the left lower extremity. Neurological examination showed only hyporeflexia of the left pattela reflex and positive Lase-goe's sign. MRI showed intradural mass at the 1.4 level.
Preoperatively, we diagnosed a cauda equina tumor. A laminectomy of both L3 and IA was performed, and total removal of the cauda eqina tumor was performed. Microscopically, the tumor cells were large, the appear-ance of the cytoplasm ranging from optically clear with sharply outlined boundaries, to deeply granular, with many transitional forms. These histological findings were typical findings of Grawitz's tumor, and were the same as those of this patient's renal tumor. Finally, we diagnosed Grawitz's tumor metastasizing to the cauda equina. Metastatic cauda equina tumor from outside the central nervous system is very rare and only 7 cases have been reported. This case is the first one of Gra-witz's tumor spreadine to the cauda equina.

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