What does this actually mean?

Hi

B5a means 'in-situ'

No axillary lymphadenopathy means no signs of lymph node swelling.

Intermediate grade is usually classified as Grade 2.

Obviously this is just what is known at the moment. Be prepared that diagnosis can change as further tests, ops are performed and analysed. 

Hope this helps x 

Thanks it does. It’s much as I thought, and I do realise the post operative histology might reveal something different. Fingers crossed