Hi

God, I feel like an idiot but is it possible to develop cancer in two places at once? 

My mum was diagnosed with early breast cancer in June and had a small tumour removed in early August. The surgeon was pleased with the result but wants to remove a little more tissue as it has pre cancerous cells. This is nearly under her arm but had not spread to her lymph nodes. So far so good, but today she got really upset as she has chest pain while swallowing and wonders if this could be cancer. 

So, whatever it is, it can’t literally be connected to the breast tumour but...could she have cancer here as well? Every little symptom she has now she feels might be cancer which is probably understandable but I really need to know how to advise her as she cannot contact her nursing team over everything. Sorry if this sounds ridiculous but ever since her diagnosis, the world has been pretty crazy.

Thanks

M