Hello, welcome to HCM,
Firstly, the swelling described by you more sounds like a lymph
node, that may present in a normal person even in normal condition.
It is difficult to comment on these lump, whether it is a normal condition or a malignant salivary lesion.
For this, you have to visit a doctor in person for a thorough clinical examination. Only this can provide some clinical data about the nature of the lump.