Galassi classification of middle cranial fossa arachnoid cysts
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The Galassi classification system is one used for classifying arachnoid cysts (of dubious clinical use):
- type I: small, spindle shaped, limited to anterior middle cranial fossa, usually with free communication of CT cisternography (CTC)
- type II: superior extent along sylvian fissure with displacement of the temporal lobe
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type III: large, fills the whole middle cranial fossa, with displacement of not only the temporal lobe but also the frontal and parietal lobes
.Little. Little communication with subarachnoid space on CTC
-<strong>type III: </strong>large, fills the whole <a href="/articles/middle-cranial-fossa">middle cranial fossa</a>, with displacement of not only the temporal lobe but also the frontal and parietal lobes.Little communication with subarachnoid space on CTC</li>- +<strong>type III: </strong>large, fills the whole <a href="/articles/middle-cranial-fossa">middle cranial fossa</a>, with displacement of not only the temporal lobe but also the frontal and parietal lobes. Little communication with subarachnoid space on CTC</li>
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