Thank for writing to us! Hi! this is a benign condition and if I were your family physician for this condition, I would examine him carefully to exclude a possibility of para-urethral cyst or an inclusion cyst. Therefore please see your surgeon for an opinion and physical examination or some simple pathological tests for confirmation of the diagnosis and relevant treatment protocol. Take care not to injure there! Hope you got the answer; please write to us again if any follow-up advice is required. wishing your son good health!