The outlook depends on the disorder:
Sialolithiasis – If a stone is removed promptly, the prognosis is usually excellent. About 20 percent of people have stones return.
Sialadenitis – With prompt antibiotic treatment, the prognosis is usually very good. The highest risk of complications is in elderly people and those with chronic, debilitating illnesses.
Viral infections – Most people recover fully without complications.
Cysts – In most cases, the prognosis is good. Although cysts develop again in some people, these usually can be removed without complications.
Benign tumors – The prognosis is usually very good, although tumors develop again in some people as late as 10 to 15 years after the first tumor was removed.
Malignant tumors – The prognosis is usually best for parotid tumors and poorest for cancers of the sublingual or minor salivary glands; cancers that have invaded the nearby facial nerve; or bulky cancers that have spread (metastasized).
Sjgren's syndrome – The prognosis varies. Some people have only mild symptoms, and others have more severe forms of the illness that affect the quality of life.
Sialadenosis – Once any underlying illness is treated, the salivary glands usually return to their normal size.

