36 year old male. Recently felt a lump about 4 inches below my right nipple. It is around 1 x 3cm and isn't very movable. (It seems to move with all the tissue/skin if I stretch but doesn't feel like an ingrown hair/etc.) There is no pain and it is not visible. It feels similar to a swollen lymph node, but I know there isn't a lymph node there. My doctor called for an ultrasound which failed to see anything. Any idea what this could be? Family is full of cancer, so of course worried. Thanks!