Grade 3 Meningioma

This phase II trial studies how well lutathera works in treating patients with meningioma that cannot be treated with surgery (inoperable) and is growing, spreading, or getting worse (progressive) after external beam radiation therapy. Lutathera is a radioactive drug administered in the vein that is designed to target and kill tumor cells. The goal of this study is to determine whether this drug is safe and effective in treating meningiomas that progress after radiation treatment. WHO Grade I and Cohort WHO II/III cohorts will be evaluated.