Kuttner tumour: an unusual cause of enlargement of a minor salivary gland in the lip.

Kuttner tumour is benign, chronic, sclerosing sialadenitis that usually occurs in the submandibular gland and is regarded as a salivary gland neoplasm because of its clinical features. We describe a tumour arising from a minor salivary gland of the upper lip. To our knowledge, there are only two previously reported cases.