Welcome to health care magic.
1.The lump under the chin could be sailo-
adenitis (
salivary gland in obstruction), submandibular lesion and finally also an
lymph nodal enlargement. And a lymph node on the right side of the neck.
2.Good that planned for an
ultrasound - will exactly what needed in this case - ultrasound will help in assessing the nature of the lesion and its sours and extensions.
3.In case of mass lesion an FNAC - fine needle
aspirin cytology will help in assessing the nature of the cells involved
4.Treatment depends on the findings of the ultrasound and histology.
5.Not to worry much in your are, the lymph nodal enlargement is seen in any infection / inflammation it can be localised or systemic so treat any cause which you are aware of. Good luck.
Hope i have answered your query.
Any thing to ask do not hesitate. Thank you.