Chapter 84. Benign Neoplasms of the Salivary Glands

Question 1

Most common benign salivary gland neoplasm

Answer 1

Pleomorphic adenoma

Question 2

2nd most common benign salivary gland neoplasm

Answer 2

Warthin tumor

Question 3

Most common location of pleomorphic adenoma of minor salivary glands? 2nd most common site?

Answer 3

Palate

Upper lip- 2nd

Question 4

Most common benign tumor of the lacrimal gland?

Answer 4

Pleomorphic adenoma

Question 5

2 morphologic components of pleomorphic adenoma

Answer 5

Epithelial (ducts, nests, cords, or solid sheets of cells) and Myoepithelial (plasmacytokd or spindled in a fibrocollagenohs, myxochondroid or chondroid background)

Question 6

Risk of malignant transformation of pleomorphic adenoma

Answer 6

1.5% within the 1st 5 yrs of diagnosis

10% if observed tor more than 15 yrs

Question 7

Most common sites of myoepitheliomas

Answer 7

Palate and parotid

Question 8

Cytologic features that distinguish basal cell adenomas from adenoid cystic carcinomas, except

a. Cells are separated by sharp, smooth border without interdigitating collagenous stroma
b. Lack of true invasion of surrounding tissues
c. Lack of perineural invasion
d. Peripheral palisading of the outer layer of basiloid cells
e. None of the above

Answer 8

Ans. A — seen in adenoid cystic carcinoma

Question 9

Other name for Warthin tumor

Answer 9

Papillary cystadenoma lymphomatosum

or Adenolymphoma

Question 10

Treatment of Warthin tumor

a. Surgical excision with facial nerve preservation
b. Surgical excision with facial nerve sacrifice
c. Observation
d. Radiation

Answer 10

Ans. A

Question 11

Benign neoplasm, slowly enlarging mass, nontender, most commonly found in upper lip and looks like a mucocele. Histollogically, note of parallel rows that form ductlike structures

a. Canalicular adenoma
b. Oncocytoma
c. Sialadenoma papilliferium
d. Sclerosing polycycstic adenosis
e. Myoepithelioma

Answer 11

Ans. A

Question 12

Presents as painless, slowly enlarging tumor that occurs at 5th-6th decade of life, with hx of prior radiation. No lymphoid tissue histologically, with note of abundant hyperplastic mitochondria resulting to granular appearance of cytoplasm

a. Canalicular adenoma
b. Oncocytoma
c. Sialadenoma papilliferium
d. Sclerosing polycycstic adenosis
e. Myoepithelioma

Answer 12

Ans. B