A rare case of axillary lymphadenopathy

We have some very interesting images for you but, can you answer the questions below?

1. How would have initially managed this patient?
2. How should axilliary lymphadenopathy be investigated?
3. Which conditions would you want to exclude?

If you don’t know the answers or want to know more read ‘A rare cause of axillary lymphadenopathy: Kikuchi’s disease‘