The swellings that you are palpating are Lipoma's , swelling arising from fat cells.
It is neither Cancer nor Aneurysm
You get one of the swelling removed by your surgeon and send it for histopathological examination(Biopsy
).It will confirm the diagnosis.
Nothing to worry
If you come back with biopsy report,i will clarify further.If it is lipoma,there is no medical treatment.
Wish you good health