I have been advised by my doctor that I have a virtual hernia.  Two years ago, I had lung surgery (left)  due to breast cancer which occurred in March, 2007.  I was at high risk for recurrence due to being triple negative.  At the time of my lung surgery, eight lymph nodes were removed.  The one lymph node was very close to my heart.   What was thought to be a two and one-half hour surgery, turned out to be a five and one-half hour surgery.  I  thought at first this bulge might have been due to the previous lung surgery.  Would you advise surgery?  It is very uncomfortable.  Any pressure, especially wearing a bra, does hurt.  I would appreciate your input.
The one lymph node may be a secondary, and you should consult your Surgeon and Surgical-oncologist immediately for necessary evaluation and management. As hernia is prone for complications, like obstruction, strangulation & gangrene formation, hernia also needs surgical repair.