Sialolithiasis (Salivary duct stones)
Sialadenitis (Inflammation of Salivary glands)
Viral e.g. mumps parotitis
Bacterial especially in postep. or dehydrated patient, and associated with sialolithiasis
Autoimmune chronic sialadenitis
e.g. Sjogren syndrome in RA causing xerostomia and keratoconjunctivitis sicca with lacrimal gland involvement Together called Miculiz syndrome
Chronic granulomatous sialadenitis,
e.g. TB, sarcoidosis
Salivary gland tumor
Pleomorphic adenoma
Warthin tumor, aka papillary cystadenoma lymphomatosum
Adenocarcinoma, squamous cell carcinoma and mucoepidermoid carcinom are rare.