Hi, thanks for writing to HCM. If I were your treating Doctor for this case of a MOBILE lump on the jaw bone between ear and chin, I would come up with three possibilities, these include: 1. lymph nodes due to some chronic disorder like local/surrounding infection, tuberculosis, lymphoma or chronic throat / neck infection or even malignant diseases in elderly people! 2. The second possibility is of benign and simple conditions like lipoma or neurofibroma or infection or benign tumors of the salivary glands; there is nothing to worry about these! 3. The last possibility is of sebaceous cyst or some other cysts like branchial cyst or lymphatic cysts! Nothing to worry about these also! Therefore, the treatment only depends upon the diagnosis and generally medicines are sufficient in majority of cases! I suggest you to go for an FNAC /biopsy and ultrasound of the lumps for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.