3 years + on Herceptin, Why

[Lizard]

Hi,

What is NED? My BC (Her2/new+ (3), EP neg; just finished preaduvant chemo; surgery/radiation to come), spread to at least 2 lymph nodes but didn't show up in my MRI, CT or All body bone scan. However, I didn't have a brain scan. Should I demand for one? I get occasional shooting pains at the base of my skull that come and go and my onc told me to get a good old fashioned massage. Aren't the symptoms of brain metastasis continual and gradually increasing in pain and pressure?