Abstract

Colloid cysts of the third ventricle are considered as benign lesions. The clinical manifestations are not clear in most of cases. Many treatment options are available and endoscopic removal of the cysts proves to be a very successful method especially if the lateral ventricles are moderately or severely dilated. Sometimes, we faced cases with non- or mildly dilated ventricles which may add more risks to the operation, limit the radicality of removal, or abort the procedure entirely. Sixteen cases of colloid cyst with mildly dilated ventricles were operated upon between 2008 and 2016 using the rigid endoscopic system. Twelve were female and four were male. Their ages were between 17 and 40years old. Headaches and epileptic fits were the presenting symptoms in 13 cases and 2 cases respectively. One case was asymptomatic. The patients were followed up from 1 to 4years. Total removal in 12 cases and evacuation of the contents and partial removal in 4 cases. Mild transient complications occurred in the form of fever in seven cases, vomiting in four cases or short-term recent memory loss in three cases. No deaths occurred due to the procedures. Working endoscopically in enlarged ventricles is very effective and easy; however, small sized ventricles do not prevent safe and effective complete removal of colloid cysts. Cases with residual cyst wall do not suffer from recurrence.

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