You are welcome. Your son's undescended testicle should have been treated with much sooner than this and it is incorrect that you should wait until he is 4 or 5 years. Now he has pain on the side of the undescended testicle. It is possible that the testicle has twisted, a condition known as 'torsion of the testes'. It is absolutely essential to take him to see a paediatrician or paediatric surgeon immediately even if he has to be seen at an after hours emergency unit today or this evening.
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