Salivary Benign Tumors Flashcards
What is the most common benign parotid tumor
in children?
Hemangiomas or pleomorphic adenomas, depending on the series
What is the most common benign salivary epithelial tumor in children?
Pleomorphic adenomas
What is the relative incidence of benign to
malignant lesions based on the salivary gland site
of origin?
Of all lesions in each salivary gland, 75% of parotid masses
are benign, more than 50% of submandibular masses are
benign, but more than 80% of minor salivary gland masses
are malignant.
What is the most common benign salivary tumor,
and where is it most commonly found?
Pleomorphic adenoma (represents ~75% of benign salivary tumors) is most often found in the parotid gland.
What is the recommended treatment for pleomorphic adenoma?
Surgical excision along with a cuff of normal salivary tissue
is recommended.
What is the risk of malignant transformation of an
unresected pleomorphic adenoma?
Estimates of malignant transformation of a pleomorphic
adenoma are 1.5% in the first 5 years and 10% after 15
years.
What risk factor is unique to Warthin tumor?
Smoking; no other salivary gland tumors are directly associated with a history of smoking.
Which benign salivary tumor is most often
bilateral?
Warthin tumor of the parotid gland
The cells of a true oncocytoma contain an
abundance of what organelle?
The cells of an oncocytoma contain a very large number of
mitochondria.
Where are salivary monomorphic adenomas most
commonly located?
The most common presentation is of minor salivary glands
on the upper lip.
What are some of the histologic types of monomorphic adenomas?
Monomorphic adenoma is a term that refers to a set of rare
salivary gland tumors. They include basal cell adenoma, canalicular adenoma, clear cell adenoma, glycogen-rich adenoma, and myoepithelioma.
What is the most common location of a benign salivary canalicular adenoma?
Salivary canalicular adenomas are most commonly found in
minor salivary glands of the upper lip.
