Cysts Flashcards
1
Q
Developmental Cysts
A
epithelial cysts that are well defined, single layered, and thin walled lesion; arise during embryologic development
2
Q
Acquired Cyst
A
developed after birth through trauma or infection (or by dental caries)
3
Q
Cyst
A
an epithelium-lined cavity that is hollow inside; epithelium lining is on the inside
4
Q
Epstein’s Pearls
A
- median palatal raphe (seam)
- epithelium entrapped along lines of fusion
- newborns
5
Q
Bohn’s Nodules
A
- hard/soft palate junction
- derived from minor salivary
- newborns
6
Q
Nasolabial Cyst
A
- rare
- developmental cyst
- upper lip, to the side of midline
- NOT seen in radiographs
- can be secondarily infected
- needs surgical removal
7
Q
Globulomaxillary Cysts
A
- between LI and cuspids
- odontogenic origin
- lined by inflamed stratified squamous epithelium
- similar to OKC
- may have tipping of roots
8
Q
Nasopalatine Duct Cyst
A
- developmental cyst
- most common non-odontogenic cyst
- closed up duct causing epithelium to be caught in canal
- has highly variable epithelial lining
- well circumscribed radiolucency
- between & apical to CI
- can cause root absorption
9
Q
Median Palatal Cyst
A
- rare
- due to trapped epithelium along the lines of fusion of palatal shelves
- difficult to distinguish from nasopalatine duct cyst
- determined by having expansion of the palate due to cyst
10
Q
Median Mandibular Cyst
A
- odontogenic origin
- between mand. CI
- has midline radiolucency
11
Q
Epidermoid Cyst of the Skin (EIC)
A
- rarely occurs in the mouth, usually on acne prone areas of the skin
- lumen filled with keratin
- well defined granular layer
- associated with Gardner’s Syndrome
12
Q
Dermoid Cyst
A
- missing 1 of 3 germ cell layers
- has skin adnexal structures (like hair)
- not teratoma because that has all 3 germ layers
- not epidermoid cyst because that has no adnexal structures
- midline/floor of mouth
13
Q
Thyroglossal Duct Cyst
A
- most common cyst of the neck
- most cases develop below hyoid bone
- can see it move when swallowing if attached to hyoid bone
- can develop in a high variety of areas
14
Q
Branchial Cyst
A
- comes from 2nd branchial arch (gills)
- commonly found on upper lateral neck, 2/3 on left and 1/3 on right side
- can be secondarily infected
- fluctuant (moves around) mass
15
Q
Oral Lymphoepithelial Cysts
A
- develops within oral lymphoid tissue
- mainly found in floor of the mouth, but could be found in Waldeyer’s ring
