This picture was photographed to scale. The size of the human head at the level of the posterior fossa is compared to the human hand. Ergo, microneurosurgery!
The other day one of the anesthesia residents asked why neurosurgeons use an operating microscope. This picture shows the comparative dimensions of the posterior fossa with respect to the human hand. It's now easy to understand that tight spaces require magnification to get rid of "small tumors" especially when such tumors are enveloped by eight cranial nerves and four critical vessels.
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