Is it possible for a tumor that in the parotid gland to gett bigger nd then smaller?

Prob not a tumor: Is probably a stone that forms and passes and it will swell and shrink as the stone forms prior to passing.

Parotid tumor : It is possible for a tumor of the parotid gland to fluctuate in size. Reasons for this include a tumor that obstructs a duct causing a build up of saliva or hemorrhage(bleeding) into the tumor. Inflammation of or around the tumor could cause changes in size.