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Oral Path Midterms > Cyst > Flashcards

Cyst Flashcards

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1
Q

What is odontogenic cyst?

A

A cyst relating to tooth, coming from tooth structure
Or
Developmental relating to tooth germ

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2
Q

What is non odontogenic cyst

A

A cyst relating to a non tooth germ

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3
Q

Twi major epithelial parts of tooth germ

A

Inner enamel epithelium and outer enamel epithelium

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4
Q

Primordial structure for odontogenic cyst

A

IEE and OEE

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5
Q

Most common cysts of the jaw

A

Periapical (radicular) cyst

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6
Q

Source of periapical cyst

A

Rests of malessez

Within the pdl

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7
Q

Develops from a preexisting periapical granuloma which is a focus of chronically inflamed granulation tissue located at the apex of a nonvital tooth

A

Periapical cyst

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8
Q

Is the tooth of perapical cyst vital?

A

It is nonvital (dead)

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9
Q

How are periapical granulomas initiated?

A

By the degradation production of necrotic pulp tissue

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10
Q

Is periapical cyst sympto or asymptomatic?

A

Asymptomatic

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11
Q

Differential diagnosis of periapical cyst

A

Peripical granuloma
Periapical scar

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12
Q

Treatment for periapical cyst

A

Marsupialization or cystectomy

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13
Q

When the necrotic tooth is extracted but the cyst lining is incompletely removed, ______ cyst may develop

A

Residual cyst

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14
Q

A nonkeratinized developmental cyst occuring adjacent or lateral to the root of a vital tooth

A

Lateral periodontal cyst

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15
Q

mostly occur in the mandibular premolar and cuspid regions and occasionally in the incisor area

In the maxilla, lesions are noted primarily in the lateral incisor region

A

Lateral periodontal cyst and gingival cyst

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16
Q

Appears as a small soft tisse swelling within or slightly inferior to the interdental papilla

Radiography reveals no findings

A

Gingival cyst

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17
Q

Differential diagnosis for gingival cyst of the adult

A

Gingival mucocele
Fordyce’s granules
Parulis
Peripheral odontogenic tumor

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18
Q

Treatment for lateral periodontal cyst and gingival cyst of the adult

A

Local excision of both gingival and lateral periodontal cyst

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19
Q

Aka as dental lamina cyst of newbornor bohn’s nodules

A

Gingival cyst of newborn

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20
Q

Presents as asymptomatc, well delineated, round or teardrop-shaped unilocular

Radiolucency with an opaque margins along the lateral surface of a vital tooth root

A

Lateral periodontal cyst

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21
Q

Another term for lateral periodontal cyst when the the lesion is multilocular

A

Botryoid odontogenic cyst

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22
Q

Histopath of lateral periodontal cyst and ingival cyst

A

Thin-nonkeratinized epi

Clusters of glycogen-rich, clear epithelial cells in the cyst lining

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23
Q

Palatine cysts of the newborn

A

Epstein pearls

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24
Q

Treatment for gingival cyst of the newborn

A

None

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25
Histologic of gingival cyst ofnewborn
Bland stratified squamous epithelium
26
The second most common type of odontogenic cyst, and the most common developmental cyst if the jaws.
Dentigerous cyst
27
A cyst that is attached to the tooth cervix at the CEJ, and it encloses te crown of he unerupted tooth
Dentigerous cyst
28
Expansion of dentigerous cyst if related to an?
Increase in cyst fluid osmolality and the release of bone resorption factors
29
Most commonly associated with third molar and maxillary canines, which are the most commonly impacted teeth
Dentigerous cyst
30
Common indication of dentigerous cyst formati9on
Delayed eruption
31
A variant of the dentigerous cyst arising at the birfurcation of molar teeth Molar teeth involved is fully erupted
Paradental cyst or buccal bifurcation cyst
32
Histopathology of dentigerous cyst or iyahang epithelium
Stratified squamous epithelium ( thin, nonkeratinized epithelium) ( ciliated stratified squamous epithelium)
33
DD of dentigerous cyst
Odontogenic keratocyst Ameloblastoma
34
Treatment of dentigerous cyst
Removal of the associated tooth and enucleation of the pericoronal soft tissue component
35
Results from fluid accumulatin within the follicular space of an erupting tooth
Eruption cyst
36
What is the epithelium lining of eruption cyst
Reduced enamel epithelium
37
In eruption cyst, blood may appear within the tissue space, what is it called
Eruption hematoma
38
Treatment for eruption cyst
None.
39
A pathologic space filled with fluid or semisolid material lined by epithelium
Odontogenic keratocyst
40
Factors of OKC that supports as a cyst classification
High reoccurence rate; associated with nevoid basal cell carcinoma syndrome Overexpression of cell cycle proteins Mutations in PTCH tumor suppressor gene
41
Is the PTCH gene is nonfunctional, overexpressio of sonic hedgehog or smoothened proteins occurs, leading to a?
Increased cell proliferation
42
Found in the mandible in an approximate 2:1 ratio, in the mandible, the posterior portion of the body and the ramus region are mos commonly affected, and in the maxilla, the third molar area is most commonly affected
Odontogenic keratocyst
43
Histopath of OKC
6-10 cell layers Palisaded pattern Parakeratotic lining Epithlial budding
44
DD of OKC
If teeth involved: Dentigerous cyst Ameloblastoma Odontogenic myxoma Non odontogenic tumot In young patients Central giant ell granuloma Aneurysmal bone cyst Traumatic bone cyst
45
Well-circumscribed radiolucency with sooth radiopaque margins Multilocularity is often present and tends to be seen more commonly in larger lesions
OKC
46
2 variants of OKC
Orthokeratinized - 1:20 as common as OKC - found below at a flat, noncorrugated surface Parakeratinized - uneven or corrugated profile - high recurrence rate
47
Treatment for okc
Surgical excision with peripheral osseous curettage Or Ostectomy
48
Considered fissural cysts, located between the globular and maxillary procecsses
Globulomaxillary cyst
49
Radiographically, it appears as a well-defined radiolucency, often producing divergence of the roots of the maxillary lateral incisors and canine teeth. (Vital teeth) (asymptomatic)
Globulomaxillary cyst
50
Treatment of globulomaxillary cyst
Biopsy necessary to establish definite diagnosis
51
Soft tissue cysts oif the upper lip
Nasolabial cyst
52
This lesion represents cystic change in the solid cord remnants of cells from the nasolacrimal duct
Nasolabial cyst
53
The chief clinical sign is a sot tissue swelling that may present in the soft tissue over the canine region of the mucobuccal fold
Nasolabial cyst
54
Treatment of nasolabial cyst
Curettage. With few recurrence expected
55
Epithelial entrapment within a line of embryologic closure with subsequent cystic change
Globulomaxillary cyst
56
Epithelial entrapment in the midline of the mandible “fusion” of each half of the mandibular arch
Median mandibular cyst
57
Aka as incisive canal cysts
Nasopalatine duct cyst
58
Cyst that is located within the nasopalatine canal or within the palatal soft tissues at the point of opening of the canal, where the lesions are called cysts of the palatine papila
Nasopalatine duct cyst
59
Cyst that results of the fusion of the premaxilla with right and left palatal process
Nasopalatine duct cyst/median palatine cyst
60
Most common non-odontogenic oral cyst
Nasopalatine duct cyst/median palatine cyst
61
Develops from the proliferation of epithelial remnants of paired embryonic nasopalatine ducts within the incisive canal
Nasopalatine duct (incisive canal cyst)
62
Symmetric swelling in the anterior region of the palatal mimdline or as a midline radiolucency
Nasopalatine duct cyst (incisive canal cyst)
63
Lesion may produce divergence of the roots of the maxillary incisor teeth and less commonly, may induce external root resorption
Nasopalatine duct cyst
64
Epithelial lining of nasopalatine duct cyst
Stratified squamous to pseudostratified colimnar
65
Treatment nasopalatine duct cyst
Surgical enucleation
66
No epithelial lining Radiograph: round radiolucency with defined sclerotic border Etiology: unknown
Pseudocyst
67
Collection of blood within the lesion No epithelial lining
Aneurysmal bone cyst
68
Blood filled spaces lined by connective tissues and multi nucleated giant cells Treatment: excision or curettage
Aneurysmal bone cyst
69
Empty intrabony cavity tht lacks an epithelial lining By far, the most common site of occurrence is mandible
Traumatic bone cyst
70
Empty “dead” space is medullary bone
Traumatic bone cyst
71
Treatment of traumatic bone cyst
Surgical entry to initiate bleeding and stimulate healing
72
Located below the mandibular canal in molar region
Static (stafne’s) bone cyst
73
Appears as a sharply circumscribed oval radiolucency beneath the level of the inferior alveolar canal, with encroachment on the inferior border of the mandible
Static (stafne’s) bone cyst
74
Extraorally: Located in the lateral portion of the neck, usually anterior to the sternomastoid muscle Intraoral: floor of the mouth
Branchial cyst / cervical lymphoepithelial cyst
75
Epithelium entrapped in the cervical lymph nodes during embryogenesis
Branchial cyst / cervical lymphoepithelial cyst
76
Histopath of branchial cyst
Lined with stratified squamous epithelium, pseudostratified columnar epithelium, or both Contains lymphoid aggregates
77
The epithelium of this cyst lacks cytomorphological evidence of malgnancy
Branchial cyst / cervical lymphoepithelial cyst
78
Treatment of branchai lcyst
Surgical excision
79
Located above or below the mylohyoid muscle Displaced the tongue superiorly and posteriorly When located below thee mylohyoid muscle Midline swelling occurs in the neck
Dermoid csyst
80
Histopath of dermoid cyst
Stratified squamous epithelium
81
Treatment for dermoid cyst
Surgical excision
82
Most common developmental cysts of the neck
Thyroglossal tract cyst
83
Residual epithelal elements along this pathway that do not completely antrophy may give rise to cysts in later life from the posterior portion of the tongue (lingual thyroid) to the midline of the neck
Thyroglossal tract cyst
84
Hyoid bone: Upper - stratified squamous epi Lower - ciliated columnar/columnar epi
Thyroglossal tract cyst
85
Clinical term that invludes both mucus extravasation phenomenon and mucus retention cyst
Mucocele
86
Clinical term that is used to describe a mucocele occurring in the floor of the mouth
Ranula
87
Traumatic severance of a salivary gland excretory duct, resulting in the escape of mucus, or extravasation, into the surrounding connective tissue
Mucus extravasation phenomenon
88
Most common site of mucus extravasation
Lower lip But other sites are involves: - buccal mucosa - anterior-ventral surface of the tongue - floor of the mouth - retromolar region - upper lip is very uncommon
89
Presents as arelatively painless smooth surfaced mass ranging in the size from mm to 2cm in diameter
Mucus extravasation
90
Treatment of mucus extravasation
Surgical excision and removal of associated minor salivary gland to prevent recurrence Superficial mucocele: wala
91
Results from obstruction of salivary flow caused most commonly by a sialolith
Mucus retention cyst (obstructive sialadenitis)
92
A precipitation of calcium salts around a central nidus of cellular debris, inspissated mucin and/or bacteria
Sialolith
93
Content of sialolith
Calcium carbonate and calcium phosphate
94
Presents as asymptomatic swelling wo antecedent trauma 3 - 10 mm size
Mucus retention cyst
95
In radiograph Submandibular sialolith are __ Parotid stones are ___
Subman - radiopaque Parotid - radiolucent
96
Treatment for mucus retention cyst
Surgical excision of thecyst and associated gland to avoid recurrence

Oral Path Midterms (4 decks)

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