Would you offer adjuvant radiation to a low grade myoepithelial carcinoma of the soft palate with positive margins and no other aggressive features?  

This situation is relatively more common when the surgical procedure was an excision biopsy for diagnosis rather than a planned oncological resection. The usual first Q in this scenario is whether the surgeon could go back and perform a wider excision without compromising function. This is a trick...

Yes.

I would treat if margins were positive.