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February 8, 1993

Deceptively Normal Ventricular Fluid in Lymphomatous Meningitis

Author Affiliations

From the Department of Neurology, Beth Israel Hospital, Harvard Medical School (Drs Schiff and Feske), the Harvard-Longwood Neurology Training Program (Drs Schiff and Feske), and the Division of Neurology, Brigham and Women's Hospital, Harvard Medical School (Dr Wen), Boston, Mass.

Arch Intern Med. 1993;153(3):389-390. doi:10.1001/archinte.1993.00410030093013

The diagnosis of leptomeningeal cancer ultimately depends on the finding of abnormal cerebrospinal fluid with malignant cytologic study results. We report a case of relapsed leptomeningeal lymphomatosis in which ventricular cerebrospinal fluid was entirely normal while lumbar spinal fluid was diagnostically abnormal. To our knowledge, this is the first such reported case, and it highlights the importance of sampling cerebrospinal fluid close to the site of clinical involvement.

(Arch Intern Med. 1993;153:389-390)