I am 27 years, male, student. I have a small lump on my back since last 2-3 years. It doesn't pain or create any problem. My far relative uncle had a lump under his armpit and was recently diagnosed with 2nd stage cancer when his lumps suddenly increased. I want to ask that: 1. What can this be? 2. Should I consult an oncologist? If yes, will he take me seriously because I have no problems as such right now.