<prompt> In neurofibromatosis 1 most common tumor isOptic nerve gliomaCerebral astrocytomaGlioblastoma multiforme 8Meningioma  <response>: Optic nerve glioma is an astrocytoma common in patients with neurofibromatosis 1. It is tumor of children most commonly seen in girls Refer khurana 6e 419 