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1.Its ganglions / cystic structure which arises from the ligament,tendon, bursar, joint space.
2.There will not be pain, soreness, tenderness. In this case all you need to do is monitoring, if causing any discomfort excision is treatment of choice.
3.Before excision i would recommend to get an
ultrasound examination of the lump.
4.Ultrasound examination will give a clear picture about the nature of the lump, its source and extensions. and a guided FNAC - fine needle aspiration cytology can be done to know the nature of cells.
5.Excision /
incision and drainage is treatment of choice in this case.
6.If you have no issues with
MRI - that will be an excellent tool for joint spaces - however ultrasound solve the issue. Good luck.
Hope i have answered your query.
Any thing to ask do not hesitate. Thank you.