Hi, thanks for sharing your health concerns with HCM ! Well, you mentioned that It cannot be seen, only felt. It is very movable, no pain and is semi hard! ... Anyways, If I were your treating Doctor for this case mobile painless lump in an adult male, I would come up with three possibilities, these include: 1. a lipoma or benign fatty tumor 2. a neurofibroma or benign tumor of peripheral nerve 2. a benign cyst like sebaceous cyst Overall, it is benign and not to worry about this but you could go for FNAC test for confirmation if still worried! Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.