脳内原発性悪性リンパ腫の2例

Two Cases of Primary Intracerebral Malignant Lymphoma

Ⅰ．はじめに

　原発性脳内肉腫は全脳腫瘍中1％内外を占めるにすぎないまれな疾患である．とくに脳内の網内系に属する腫瘍の発生頻度は0.6-0.7％と低く^21），本邦でも現在まで20数例を数えるにすぎない^{2，4-7，10，11，13，17，20）}．

　著者らは最近2例の原発性脳内悪性リンパ腫を経験し1例は原発性脳内リンパ肉腫，他の1例はRubinstein^14）のいう"retieulum cell sarcoma-microglioma"の組織像を呈したので報告する．

Two cases of primary intracerebral malignant lymphoma were reported.

Case 1 was a 42-year-old man who had been suffering from headache and mental disturbances for about 3 months prior to admission. These complaints progressed insidiously. He was admitted to our hospital on March 31, 1973.

On neurological examinations he was in somnolence state and had neck rigidity, positive of Kernig's sign, disorientation and dyscalculia. Lumbar puncture gave a C.S.F. pressure of 240 mmH2O and the fluid contained 180 mg/dl of protein.