[A case of secondary central nervous system lymphoma presenting marked hypoglycorrhachia].

A 67-year-old male was transferred to our hospital with diplopia, decreased deep tendon reflex and ataxia. He had been suspected Fisher syndrome because of previous upper respiratory tract infection. A cerebrospinal fluid examination showed marked hypoglycorrhachia, pleocytosis and elevated protein, and cytological examination suggested malignant lymphoma. Abdominal computed tomography revealed a left adrenal mass. A biopsy of the left adrenal mass revealed diffuse large B-cell lymphoma. He was treated with a combination of R-CHOP (rituximab, cyclophosphamide, doxorubicin hydrochloride, oncovin and prednisolone) and intrathecal administration of methotrexate, cytarabine and prednisolone. Neurological symptoms were gradually improved. Malignancy should be considered in addition to bacterial, fungal or tuberculous meningitis in a case with marked hypoglycorrhachia.