Hi,
Welcome to Health Care Magic,
I am Dr.Naveed Ullah khan,
I have read your question in detail and will try to help you in the best way possible.
It can simply be a
lipoma which is a benign growth of the subcutaneous tissues under the skin. Mught be a lymphnode which is enlarged.
Usually if it does not grow in size over a long period of time and it does not bother u then it is okay. But if u are having any other symptoms like
fever,
redness pain etc with the lump then i highly suggest doing a workup for that. An
ultrasound.would be able to identify the conture amd consistancy of the mass. If needed a
biopsy would be.important to ruleout any dangrous causes like cancers.
Infections can also cause such lumps but tjat is rare as you are having it dor a long time now but in case.of infection antibiotics would take care of it.
I hope this answered all your queries, if you have more queries,I will be happy to answer.
Wish you the best of health.
Regards.
Dr.Naveed Ullah Khan.
MBBS
USMLE step 1, 2 & 3.