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George J. Alker, Jr, MD
Department of Neurosurgery

Franz E. Glasauer, MD; Eugene V. Leslie, MD
Department of Radiology State University of New York at Buffalo School of Medicine Buffalo, NY 14215

Arch Neurol. 1980;37(7):469.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

In Reply.—

We wish to point out that the emphasis of our article, as indicated in the title, was on the radiological aspect of a large cisterna magna cyst. We compared the mass effect of a cyst on the cerebellum with the effect of a large CSF accumulation seen with partial agenesis of the brain.

In the report by Drs Adam and Greenberg, the majority of the cases of "mega cisterna magna" as seen on CT scans are smaller than in our patient. Unfortunately, we do not have a CT scan on our patient for comparison.

Regarding the effect of surgery, we only report the observations made in our case and also refer to the report by Goluboff.¹ As to the statement by Dr Greenberg that the postoperative improvement in our patient's condition could be fortuitous, we agree that this is possible. However, we cannot agree with his conclusion that our . . . [Full Text PDF of this Article]

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