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1.The moveable lump along the jawline - most possible cause is dilated ducts / salivary glands due to calculus / stricture in the ducts. Sailoadenitis.
2.The next possible cause could be
lymph nodal enlargement, along with the neck lumps - which are seen in case of nay infection / inflammation can be localised or systemic.
3.Confirmation of the both can be done by an
ultrasound scan -that will evaluate the nature of the lump and its source and extensions.
4.If mass lesion and lymph nodes an FNAC - fine needle aspiration cytology will help to evaluate the cause.
5.So suggest to get an appointment get needful investigation with the help of your GP and further surgeon will be appropriate person too treat. Good luck.
Hope i have answered your query.
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http://doctor.healthcaremagic.com/doctors/dr-ganesh/62888 Thank you.