(A) Radiograph (lateral view) of a midline posterior cranial fossa distended balloon.
(B) Cerebellum in the same animal, showing the cannula entering the substance of the cerebellum. The balloon is embedded in the substance of the cerebellum.
(C) Midline sagittal section of the above cerebellum, showing the cavity of the balloon. (A-C Reproduced from Hayreh SS. 1964b)