Review Question - QID 213600

A 12-year-old boy is brought to the emergency department for evaluation after he was struck by a car. On evaluation, he is found to have broken both legs and he is placed in long leg casts. When asked about the accident, he says that he didn't see the car coming and his mom remarks that she is worried because he seems to be increasingly oblivious to dangerous situations. Formal visual testing reveals severe defects in both of his temporal visual fields. Radiography reveals a calcified lesion in the brain and surgical removal of this lesion reveals an enamel-like appearance on histology. Which of the following characteristics is most likely true of the lesion that affected this patient?