Intracranial ectopic recurrence of craniopharyngioma after Ommaya reservoir implantation.

We present a very rare case of a craniopharyngioma showing intracranial ectopic recurrence after the total removal of recurrent craniopharyngioma arising at the primary site accompanied by Ommaya reservoir implantation. A 2-year-old boy underwent a bifrontal craniotomy and total removal of the adamantinomatous craniopharyngioma via the interhemispheric translamina terminalis approach. Four months later, he underwent total removal of recurrent craniopharyngioma and implantation of an Ommaya reservoir via the same approach. Ten months later, total removal of the ectopic recurrent craniopharyngioma following the placement of the Ommaya reservoir cannula, which was placed within the surgical route, was performed via the same craniotomy. Copyright (c) 2004 S. Karger AG, Basel.