Orbital meningioma after cranial radiation for acute lymphocytic leukemia.

Purpose: To describe the ophthalmic findings of cranial radiation-induced orbital meningioma after acute lymphocytic leukemia therapy.

Methods: This is a prospective clinical report.

Results: We describe two patients recently evaluated with orbital meningiomas many years after cranial radiation for acute lymphocytic leukemia.

Conclusions: There will probably be more of these cases in the next several years. Unlike primary meningiomas, these neoplasms have a tendency to be more diffuse, multiple, and may undergo malignant degeneration.