An attempted removal of a third ventricular cysticercosis cyst by an endoscopic approach was aborted before surgery when a preoperative scan demonstrated migration of the cyst into the fourth ventricle. In a second case, successful endoscopic removal of a cysticercosis cyst of the posterior third ventricle by a precoronal, transforaminal approach is described. Transforaminal endoscopic removal of third ventricular cysticercosis lesions is feasible, and immediate preoperative imaging should be performed to rule out migration of the lesion before surgery.