posterior fossa (redirected from Fossa posterior)

posterior fossa,

a depression on the posterior surface of the humerus, above the trochlea, that lodges the olecranon of the ulna when the elbow is extended.

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Patient discussion about posterior fossa.

Q. info on arachnoid cyst in the right posterior fossa

A. Posterior fossa cysts are one of the two most damaging kinds because of the structures underneath such as the cerebellum and brain stem and can cause other diseases. It can cause facial pain from pressure on the trigeminal nerve. Most people do not have any symptoms, but those that do, are prone to headaches.

You might could use this also:
http://www.ninds.nih.gov/disorders/arachnoid_cysts/arachnoid_cysts.htm
Hope this helps.