Hi, it is not a grave problem. But, it should be treated. You should see a Surgeon about the issue and he would be able to find out whether the testicle is lying in the inguinal pouch near the groin or it is within the abdomen. It will need to be surgically brought down into the scrotum. If not, there are chances that it can turn cancerous and therefore it is recommended to undergo surgery for the same. Do not worry its a fairly normal and common operation. Take care and let me know if there are any more queries I can help you with. You can also contact me on the Ask a Specialist question directly. Dr Rishi, New Delhi, India.