How would you manage a resected meningioma found to harbor a small focus of metastatic disease from a non-CNS primary malignancy?

Mets to a tumor (Collision) are seen, though rare. Simple answer:

1. Meningioma resection (Grade 1) or for that matter up to Grade II, irrelevant since the time to progression in a less than a Simpson Grade I resection would far outrun the metastatic cancer.

2. Treat the resection cavity like a met ...

This is a somewhat unusual case where a resected meningioma was found to harbor incidental metastatic disease from a non-CNS primary malignancy. I would want to review the pathology and find out the primary disease - whether it's a lung, breast, melanoma, or other primary as well as receptor status ...

There are too many extant missing details in this question for a meaningful and accurately relevant answer.

-What grade and how large was the meningioma? What was the quality of the resection?

-What was the histology of the primary found in the meningioma? How much is a “small focus” of disease?

-Ha...