@sue417 - I am pleased you have at least some of the information! Regarding the margins, can you clarify an important point? You said the surgeon stated your clear margins were 1 cm and should be 2 cm. Do you actually mean 1 mm? Take a look at below link;
"... additional surgery may not be justified for patients with negative margins < 2 mm who undergo RT but should be performed in patients who forego RT."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6051916/#:~:text=Recent%20national%20consensus%20guidelines%20recommend,managing%20negative%20margins%20%3C%202%20mm.
In other words, according to the above and other studies, if your margin is UNDER 2 mm (NOT 2 cm), you may need either re-excision OR Radiation Therapy.

HUGS!

D