Salivary Gland Tumors Flashcards
What is the most common SGT?
Pleomorphic adenoma
A pleomorphic adenoma is most often found in what gland? It is the most common tumor of what glands?
Parotid gland
Most common tumor in the minor salivary glands
Where do most cases of pleomorphic adenoma occur in the mouth?
Posterior hard palate and upper lip
Is a pleomorphic adenoma attached?
No, freely movable
What cells are found in the epithelium of pleomorphic adenoma?
Duct cells and myoepithelial cells
The stroma of pleomorphic adenoma can best be described as?
Abundant and varied
Are pleomorphic adenomas encapsulated?
Poorly
How do you treat pleomorphic adenoma?
Surgical excision with rim of adjacent normal tissue in the major glands and palate
At other oral sites, enucleation
The recurrence rate for pleomorphic adenoma is higher in MSGs or parotid?
Parotid
Malignant transformation occurs in what percentage of pleomorphic adenomas?
Less than 5%
Canalicular adenoma occurs almost exclusively in what glands?
MSGs
Where do most canalicular adenomas occur in the mouth?
Upper lip
At what age do people get canalicular adenoma?
Above 60
What color is a canalicular adenoma?
Normal colored or bluish
Is the recurrence rate higher for canalicular adenoma or pleomorphic adenoma?
Pleomorphic adenoma
In what gland is Warthin’s tumor very rare?
MSGs
Who is most likely to get Warthin’s tumor? It is the only salivary tumor associated with increased risk from ____?
Men over 50
Smoking
What 4 benign, normal colored well defined enlargements are encapsulated?
Neurilemoma
Some neurofibromas
Leiomyoma
Benign salivary gland tumors (incomplete)
Malignant salivary gland tumors make up what percentage of oral malignancies?
10%
What is the most common type of malignant salivary tumor in the US?
Mucoepidermoid carcinoma
Mucoepidermoid carcinoma most commonly occurs in what gland? What oral site?
Parotid
Hard palate
Minor gland mucoepidermoid carcinomas can be mistaken for?
Mucoceles
How do you treat low grade and high grade mucoepidermoid carcinoma?
Low grade excise with narrow border
High grade excise with wide margin
50% of adenoid cystic carcinomas occur in what gland? What oral site?
Minor salivary glands
Palate
Adenoid cystic carcinoma is the most common malignancy of what gland?
Submandibular
In adenoid cystic carcinoma the ____ year survival rate is worse than the ____ year survival rate
20 year is worse than 5
The prognosis for adenoid cystic carcinoma is worst for tumors arising in what two areas?
Maxillary sinus and submandibular gland
Who typically gets polymorphous adenocarcinoma?
Women over 50
Where doe most polymorphous adenocarcinomas occur?
In the palate, buccal mucosa, and upper lip
