Thanks for your query.Based on the facts that you have posted it appears that you have lump in the scrotum
since 9 years.
Considering the long duration and it being painless it appears to me to be Epididymal Cyst
However final diagnosis can be confirmed only on clinical examination.
Please consult qualified Urologist
for clinical examination and to confirm the diagnosis. He will be the best person for you to advise further treatment.