Easier than you would think to get one. I have had two. One about two years ago and the other when I was really young. Sometimes it can be really small and impossible to tell, if that is the case you just need to go to the doctor and have them look at it or take an MRI. If it is bigger, just press slightly on the area, remove your hand and cough, if the skin pops up with a small lump, most likely you have one.