I understand your anxiety, but the information you have is only tip of the iceberg.
You need to have a proper Consultation with an Oncologist, proper clinical evaluation is needed, further investigations to rule out further spread are needed.
Few further information on different receptors like ER/PR/Her2 are also needed.
When clinical, radiological and histological features are all available can an Oncologist give you rough estimate (on an average) how aggressive or passive a cancer behaviour is going to be.
Make enquiries about a good cancer centre near your place. Seek second opinion if your Oncologist does not give u adequate time and attention .
All the best for your mom's cancer journey...which is a long way ahead of you...but you surely will reach the finishing line...
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