Endoscopic treatment of convexity arachnoid cysts

The aim of this study was to investigate the endoscopic treatment of cerebral hemisphere convexity arachnoid cyst. Eight cases of hemisphere convexity arachnoid cyst treated with cyst-ventricular or cisternal endoscopic approach in September 2007 to March 2011 were retrospectively recruited. The clinical symptoms, radiological findings, surgical indications, surgical approach, complications, and follow-up studies were analyzed. All patients showed convexity arachnoid cysts adjacent to the ventricles or cisternal. After treatment, all patients showed decrease in size of the cysts (100 %), with preoperative symptoms disappeared in six patients and improved in two cases. In one case, postoperative subdural effusion was found without symptoms reported. Endoscopic surgery is ideal for treatment of arachnoid cysts adjacent to the ventricles or cisternal.