The surgical technique for the endoscopic evacuation of colloid cysts of the third ventricle in 13 patients is described. The authors conclude that endoscopic resection of these lesions is a useful addition to the current surgical repertoire and a viable alternative to stereotactic aspiration or open craniotomy.

The authors describe an endoscopic approach to the anterior aspect of the third ventricle and demonstrate its use in the cadaver. This technique consists of a small supraorbital craniotomy and a subfrontal trans-lamina terminalis approach to the third ventricle. It may be helpful in the management of refractory third ventricular lesions that cannot be easily accessed endoscopically through the foramina of Monro.

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