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Computed tomography of disseminated meningeal and ependymal malignant neoplasms

Departments of Neuroradiology (Drs. Ascherl and Hilal) and Neurosurgery (Dr. Brisman), Neurological Institute of New York, Columbia-Presbyterian Medical Center, New York, NY.

We studied computed tomography (CT) scans of 50 patients with clinical signs and symptoms compatible with disseminated meningeal tumor, all documented by cerebrospinal fluid cytology, surgical biopsy, or autopsy. Twenty-three patients also had nuclear scans, and 13 had cerebral angiograms. Represented in the series were patients with metastatic carcinoma, gliomas, and lymphomas. The characteristic CT findings included gyral enhancement without edema; sulcal and basilar cisternal obliteration and enhancement, and ependymal-subependymal enhancement. The correct diagnosis was made by CT in 28 of the 50 cases (56%).

Address correspondence and reprint requests to Dr. Ascherl, Department of Radiology, Bay Medical Center, 1900 Columbus Ave., Bay City, MI 48706.

Presented at the fourteenth annual meeting of the American Society of Neuroradiology, Atlanta, GA, May 1976.

Accepted for publication July 28, 1980.

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