Welcome, @kks. there are a few members here living with invasive lobular cancer who have had or are considering radiation treatments, like @delormv @wendles @kszilvia @ilcpfightee @pharmmom4 @jackiestack. They may be able to share what went into their treatment decision making and their experiences with radiation.

You might also be interested in this related discussion with the ILC-ers hang out:
- Lobular Breast Cancer: Let's share and support each other https://connect.mayoclinic.org/discussion/lobular-breast-cancer/

KKS, is radiation being discussed as a treatment option for you?