Friend diagnosed with breast cancer, advice?

A friend of ours (early 50's) has just been diagnosed with breast cancer after a routine scan, this has apparently already spread to the 'lymph nodes'. What are 'lymph nodes' please and what effect does this have on her treatment and prognosis? What are her treatment options? Appreciate... show more A friend of ours (early 50's) has just been diagnosed with breast cancer after a routine scan, this has apparently already spread to the 'lymph nodes'. What are 'lymph nodes' please and what effect does this have on her treatment and prognosis? What are her treatment options?
Appreciate advice as we are totally ignorant of the subject.
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