Canalicular adenoma.

Penner CR, Thompson L.
Ear Nose Throat J. 2005 Mar;84(3):132.
FIRST PARAGRAPH: Canalicular adenomas are benign neoplasms with a unique predilection for the upper lip (~80% of cases). They account for 1% of all salivary gland neoplasms. Their incidence peaks during the seventh decade of life; they are distinctly uncommon in patients younger than 50 years of age. The female-to-male predominance is approximately 2:1.
PubMed ID: 15871577
Article Size: <1 MB