FIGURE 1.

Brain magnetic resonance imaging with intravenous contrast showing the pilocytic astrocytoma as an enhancing cystic lesion (2.5 × 2.9 cm) in the region of the hypothalamus and optic chiasm extending into the brain stem.

Brain magnetic resonance imaging with intravenous contrast showing the pilocytic astrocytoma as an enhancing cystic lesion (2.5 × 2.9 cm) in the region of the hypothalamus and optic chiasm extending into the brain stem.