SPONTANEOUS REGRESSION OF A TECTAL MASS IN NEUROFIBROMATOSIS 1

MR images showed an enhancing, enlarging mass in the tectum of the mid brain in a child with neurofibromatosis type 1. The mass was presumed to be a tectal glioma, which initially enlarged then regressed in size over a 3-year period and ceased to enhance, Although a tissue diagnos is was not available, we believe the temporal evolution of this lesion is strong presumptive evidence of a hamartoma. This case argues for t he conservative management of patients with neurofibromatosis type I w hen possible.