arm pit lymph node

i found a lump in my left arm pit right by my breast. I went to my doctor who sent me to set a ultrasound. My doctor called with the results he said i had a benign lymph node and it needs to be removed so he referred be to a surgine. So my quiestion is what is a benign lymph node and would it be necessary to get it removed?

[japdip]

A benign lymph node is one that is basically normal except for it's size. Actually the term "benign" can't be determined without some type of biopsy or as in your case removal of the node. The Surgeon may have a different opinion as to the necessity for removal of this node. Lymph nodes can become enlarged for different reasons ... one being a minor infection somewhere in the body.  Regards ....