Benign Mesenchymal Tumors (3)

Question 1

Which disease shows as “tram-line” calcifications on skull film?

Answer 1

Encephalotrigeminal angiomatosis (Sturge-Weber syndrome)

Question 2

What is the most common intraoral site for a lymphangioma?

Answer 2

Tongue

Frog egg appearance

Question 3

A cystic hygroma is a very large ______________.

Answer 3

Lymphangioma

Can cause airway obstruction

Question 4

What are the histopathological features of a lymphangioma?

Answer 4

Lymphatic vessels infiltrating to soft tissue showing mild dilation into large cystic spaces with fluid

Question 5

What is the treatment of choice for lymphangioma?

Answer 5

Surgical excision

Question 6

T/F: Lymphangiomas have a high recurrence rate.

Answer 6

True

40%

Question 7

Where are leiomyomas most common?

Answer 7

uterus, GI tract, skin

Rare in oral cavity

Question 8

What tissue type does a leiomyoma derive from?

Answer 8

Smooth muscle

Question 9

What is the most common oral site for a leiomyoma?

Answer 9

Upper lip, tongue, palate

Question 10

T/F: Leiomyoma is a tumor of striated muscle differentiation.

Answer 10

Leiomyoma - smooth muscle

Rhabdomyoma - striated muscle

Question 11

T/F: Although rare, rhabdomyomas are most commonly seen in the head and neck.

Answer 11

False

Second to cardiac