Spontaneous disappearance of a middle fossa arachnoid cyst associated with subdural hematoma.
The case of a 7-year-old boy with a middle fossa arachnoid cyst that spontaneously disappeared is presented. Computed tomography (CT) scan revealed an arachnoid cyst in the right middle fossa with a thin subdural hematoma on the same side. As the subdural hematoma spontaneously resolved, the cyst became smaller and finally disappeared without surgical intervention after 18 months on the follow-up CT scans. Possible mechanisms of the spontaneous disappearance of an arachnoid cyst are discussed.
Department of Neurosurgery, Kyushu University, Fukuoka, Japan.
T
T
Inoue
T
T
Matsushima
S
S
Tashima
M
M
Fukui
K
K
Hasuo
D001099:Arachnoid; D002493:Central Nervous System Diseases / Q000150:complications / Q000000981:diagnostic imaging; D002648:Child; D003560:Cysts / Q000150:complications* / Q000000981:diagnostic imaging; D006408:Hematoma, Subdural / Q000150:complications*; D006801:Humans; D008297:Male; D012075:Remission, Spontaneous; D014057:Tomography, X-Ray Computed