Fig. 3From: Endoscopy-assisted purely total outer wall excision for pediatric Sylvian arachnoid cystsA 4-year-old boy presented with progression of AC size. A, B Preoperative axial T2-weighted Magnetic resonance image of the head showing Sylvian AC on the left and bilateral symmetrical ventricles.C, D The same slice of axial T2-weighted MR image showing the disappearance of the cyst and slightly dilated ipsilateral ventricle (arrow) on 12 months follow-up MR imagingBack to article page