Benign Subtentorial Supracollicular Cyst as a Cause of Obstructive Hydrocephalus

Report of a Case

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Figures

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    Patient before head was shaved. The head is enlarged and the anterior fontanel is bulging.

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    A.P. and left lateral roentgenograms of skull after replacement of ventricular fluid with air. Lateral and 3rd ventricles are enlarged. There is no air in 4th ventricle or posterior fossa.

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    Lateral roentgenogram of skull in brow-down, horizontal beam view. No air is seen below the tentorium.

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    Artist's drawing of the subtentorial cyst and point at which an aperture was made into the posterior 3rd ventricle.

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    Photomicrograph of lining of cyst wall. Surface cells of arachnoid are prominent, backed up by collagen fibers (×190).

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    Photograph of patient Oct. 22, 1951, one year after operation.

References

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