Presentation
Patient with chronic headache that does not improve with treatment. Receives migraine treatment.
Patient Data
Age: 25 years
Gender: Male
From the case:
Arachnoid cyst
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Fluid density extra-axial cyst-like lesion is seen at left middle cranial fossa with remodeling of the adjacent bone (greater wing of sphenoid). Also, produces a mild mass effect over the temporal lobe.
Case Discussion
The Galassi classification is used to classify middle fossa cysts into three types 1.
type I cysts are typically asymptomatic
type II cysts extend superiorly along the Sylvian fissure, occasionally displacing the temporal lobe
type III cysts are very large, displacing not only the temporal lobe but also disrupting the parietal and frontal lobes
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