Nonodontogenic Cysts

Question 1

What tissue does a nasolabial cyst arise from?

Answer 1

Lacrimal duct epithelium

Question 2

Where do you typically find a nasolabial cyst?

Answer 2

The maxillary labial vestibule lateral to the midline

Question 3

What color is a nasolabial cyst?

Answer 3

Yellow

Question 4

What affect can a nasolabial cyst have on the surrounding area?

Answer 4

Obliterate the nasolabial fold and raise the ala

Question 5

What tissue is found in a nasolabial cyst?

Answer 5

Pseudo stratified squamous epithelium with goblet cells

May also see squamous metaplasia

Question 6

Where does a palatine papilla cyst develop?

Answer 6

In the soft tissue overlying the incisive foramen

Question 7

Describe palatine papilla cysts

Answer 7

Multiple small swellings that may be blue in color

Question 8

What tissues make up palatine papilla cysts?

Answer 8

Pseudo stratified ciliated columnar epithelium
Stratified squamous epithelium
Simple columnar epithelium

Question 9

What is contained within a teratoid cyst?

Answer 9

Cell from all three germ layers

Skin appendages (hair, sweat glands), connective tissue elements (bone, blood vessels), endoderm

Question 10

How does a dermoid cyst differ from a treated cyst?

Answer 10

Typically has skin appendages but is missing one of the three layers

Question 11

Where do most dermoid cysts occur?

Answer 11

In the midline floor of the mouth although some are displaced laterally

Question 12

How large can a dermoid cyst become and what is the consistency?

Answer 12

Up to 12cm, doughy with possible pitting

Question 13

What tissues are found in a dermoid cyst?

Answer 13

Orthokeratinized stratified squamous epithelium with a prominent granulosum. Keratin and dermal appendages are also seen

Question 14

How does an epidermoid cyst differ from a dermoid cyst?

Answer 14

Lacks dermal appendages

Question 15

What three types of cysts are considered newborn cysts?

Answer 15

1. Small white/yellow cysts
2. Palatal cysts
3. Gingival cysts

Question 16

What tissues are found in the small white/yellow cysts? How do you get rid of them?

Answer 16

Stratified squamous epithelium lining enclosing keratin. They disappear spontaneously

Question 17

Palatal cysts can be what two things?

Answer 17

Epstein’s pearls along the median raphe

Bohn’s nodules scattered over the hard palate from minor salivary glands

Question 18

Gingival cysts are derived from?

Answer 18

Dental lamina

Question 19

Where do gingival cysts usually occur?

Answer 19

On the alveolar ridge of the maxilla

Question 20

A thyroglossal tract cyst presents as?

Answer 20

A painless, fluctuant swelling

Question 21

Thyroglossal tract cysts develop from?

Answer 21

Embryonic thyroglossal duct epithelium

Question 22

Thyroglossal duct cysts are diagnosed at what age? What can they sometimes develop into?

Answer 22

Usually before 20

Can become papillary adenocarcinoma

Question 23

How do you manage a thyroglossal duct cyst?

Answer 23

Sisstrunk procedure but 10% recur

Question 24

What color is a lymphoepithelial cyst and how big is it?

Answer 24

Yellow or white, small, less than 1cm

Question 25

Where do lymphoepithelial cysts occur?

Answer 25

Floor of the mouth or ventral tongue

Question 26

Who gets lymphoepithelial cysts?

Answer 26

Young adults

Question 27

What tissue is typically seen in a lymphoepithelial cyst?

Answer 27

Mucosal or salivary epithelium trapped in lymphoid tissue

Question 28

What does a branchial cleft cyst or cervical lymphoepithelial cyst form from?

Answer 28

Branchial cleft remnants

Question 29

Where are most branchial cleft cysts found?

Answer 29

In the lateral neck anterior to the SCM muscle, unilateral

Question 30

Who gets branchial cleft cysts and how big can they be?

Answer 30

Young adults, up to 10cm