Arachnoid cyst

Classification according to ICD-10
G93.0	Brain cysts - arachnoid cyst
ICD-10 online (WHO version 2019)

Typical arachnoid cyst in the left central fossa (right in the picture) on computed tomography

Arachnoid cysts are benign , cystic (fluid-filled), mostly congenital extensions of the spider tissue (" arachnoid ", the middle meninges ). They are often an incidental finding during computed or magnetic resonance imaging of the head . At least one arachnoid cyst was diagnosed in 1.7% of 2536 healthy male candidates for the German Air Force . Treatment of arachnoid cysts should only be considered if they cause symptoms, for example when adjacent parts of the brain or spinal cord are compressed. Arachnoid cysts are classified according to the Galassi classification, in which arachnoid cysts are divided into three different grades depending on their size, location and shape.

Individual evidence

↑ N. Holsten, T. Liebig. Computed tomography of the head and spine. Thieme Verlag 2000, page 214, ISBN 3-13-117111-1
^ F. Weber and H. Knopf: Incidental findings in magnetic resonance imaging of the brains of healthy young men . In: J Neurol Sci . 240, No. 1-2, 2005, pp. 81-84. PMID 16256141 .
^ Galassi classification. Accessed April 4, 2020 (German).

Web links

Commons : Arachnoid Cyst - collection of images, videos, and audio files

[1] N. Holsten, T. Liebig. Computed tomography of the head and spine. Thieme Verlag 2000, page 214, ISBN 3-13-117111-1

[2] F. Weber and H. Knopf: Incidental findings in magnetic resonance imaging of the brains of healthy young men . In: J Neurol Sci . 240, No. 1-2, 2005, pp. 81-84. PMID 16256141 .

[3] Galassi classification. Accessed April 4, 2020 (German).