How would you manage the cavity of a resected anaplastic meningioma with pulmonary metastases?

Metastatic meningioma outside the CNS is rare, and its incidence has been estimated to be 0.1% with the lung being the most common site for distant metastases (Surov et al., PMID 23404622). There is no clear standard therapy for the management of metastatic meningioma. Suppose this was an anaplastic...