Huge arachnoid cyst in the posterior fossa: controversial discussion for selection of the surgical approach.
METHODS
We report a case of a huge posterior fossa arachnoid cyst with hydrocephalus. This 15-month-old girl presented with macrocrania and psychomotor retardation. Magnetic resonance (MR) imaging demonstrated ventriculomegaly and a huge cystic lesion in the posterior fossa. A membranectomy was performed microscopically and the patient had a good postoperative course.


RESULTS
Magnetic resonance imaging 1 year after the operation revealed adequate reduction in the size of the ventricle and cyst. Progressive macrocrania discontinued and normal development was obtained.
Tsuboi
Yoshifumi
Y
Department of Neurosurgery, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
Hamada
Hideo
H
Hayashi
Nakamasa
N
Kurimoto
Masanori
M
Hirashima
Yutaka
Y
Endo
Shunro
S
D016080:Arachnoid Cysts / Q000150:complications / Q000473:pathology / Q000601:surgery*; D003388:Cranial Fossa, Posterior / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000150:complications / Q000473:pathology / Q000601:surgery*; D007223:Infant; D008279:Magnetic Resonance Imaging / Q000379:methods; D008866:Microsurgery / Q000379:methods*; D014057:Tomography, X-Ray Computed