What does possible LVI mean?

I had my letter back with from my surgeon (6 weeks ago was my mastectomy). I have oncology next week as I now may need chemo (at the beginning of this I was told I wouldn’t need it. If anything the surgeon said it would radiotherapy). It stated their findings from pathology which I understand everything else but not the part stating “possible LVI”. I have tried to understand why it was not positive or negative just possible. Does anyone know why it would say possible or had the same written? I cannot find anything on this possible. Thanks. 

Might be worth asking about this in the Ask the Nurses section too ? 

Possible LVI means possible lymphatic vascular invasion. That is, some cancer cells may have invaded the lymph system which is believed to be the route breast cancer can move to other parts of the body. Pathologists look at the tumour and how close the edges of the tumour are to blood or lymph vessels. Vascular means blood vessels I think. Lymph nodes are there to filter out foreign cells of bacteria and the like but they may not recognise cancer cells as foreign because they are human cells but gone a bit wonky.

Well that’s my take on it

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