Hi welcome to Health care magic forum.
Thanks for calling, H.C.M.
It appears to be due to tuberculous lymphadinitis, lipoma
, or bacterial lymphadinitis.
As there is no pain and it is not increasing in size, it may not be a dangerous grouth, but i recommend to consult a surgeon for diagnosis and treatment. You may need to have a needle biopsy
besides other routine tests for confermation.
If it is growing in size you must immediately consult a surgeon.
Wishing for a quick and complete recovery .