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Oral Path Midterms > Cyst > Flashcards

Cyst Flashcards

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
Q

Histologic of gingival cyst ofnewborn

A

Bland stratified squamous epithelium

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26
Q

The second most common type of odontogenic cyst, and the most common developmental cyst if the jaws.

A

Dentigerous cyst

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27
Q

A cyst that is attached to the tooth cervix at the CEJ, and it encloses te crown of he unerupted tooth

A

Dentigerous cyst

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28
Q

Expansion of dentigerous cyst if related to an?

A

Increase in cyst fluid osmolality and the release of bone resorption factors

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29
Q

Most commonly associated with third molar and maxillary canines, which are the most commonly impacted teeth

A

Dentigerous cyst

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30
Q

Common indication of dentigerous cyst formati9on

A

Delayed eruption

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31
Q

A variant of the dentigerous cyst arising at the birfurcation of molar teeth

Molar teeth involved is fully erupted

A

Paradental cyst or buccal bifurcation cyst

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32
Q

Histopathology of dentigerous cyst or iyahang epithelium

A

Stratified squamous epithelium

( thin, nonkeratinized epithelium)
( ciliated stratified squamous epithelium)

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33
Q

DD of dentigerous cyst

A

Odontogenic keratocyst
Ameloblastoma

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34
Q

Treatment of dentigerous cyst

A

Removal of the associated tooth and enucleation of the pericoronal soft tissue component

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35
Q

Results from fluid accumulatin within the follicular space of an erupting tooth

A

Eruption cyst

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36
Q

What is the epithelium lining of eruption cyst

A

Reduced enamel epithelium

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37
Q

In eruption cyst, blood may appear within the tissue space, what is it called

A

Eruption hematoma

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38
Q

Treatment for eruption cyst

A

None.

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39
Q

A pathologic space filled with fluid or semisolid material lined by epithelium

A

Odontogenic keratocyst

40
Q

Factors of OKC that supports as a cyst classification

A

High reoccurence rate; associated with nevoid basal cell carcinoma syndrome
Overexpression of cell cycle proteins
Mutations in PTCH tumor suppressor gene

41
Q

Is the PTCH gene is nonfunctional, overexpressio of sonic hedgehog or smoothened proteins occurs, leading to a?

A

Increased cell proliferation

42
Q

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

A

Odontogenic keratocyst

43
Q

Histopath of OKC

A

6-10 cell layers
Palisaded pattern
Parakeratotic lining
Epithlial budding

44
Q

DD of OKC

A

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
Q

Well-circumscribed radiolucency with sooth radiopaque margins

Multilocularity is often present and tends to be seen more commonly in larger lesions

A

OKC

46
Q

2 variants of OKC

A

Orthokeratinized
- 1:20 as common as OKC
- found below at a flat, noncorrugated surface
Parakeratinized
- uneven or corrugated profile
- high recurrence rate

47
Q

Treatment for okc

A

Surgical excision with peripheral osseous curettage
Or
Ostectomy

48
Q

Considered fissural cysts, located between the globular and maxillary procecsses

A

Globulomaxillary cyst

49
Q

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)

A

Globulomaxillary cyst

50
Q

Treatment of globulomaxillary cyst

A

Biopsy necessary to establish definite diagnosis

51
Q

Soft tissue cysts oif the upper lip

A

Nasolabial cyst

52
Q

This lesion represents cystic change in the solid cord remnants of cells from the nasolacrimal duct

A

Nasolabial cyst

53
Q

The chief clinical sign is a sot tissue swelling that may present in the soft tissue over the canine region of the mucobuccal fold

A

Nasolabial cyst

54
Q

Treatment of nasolabial cyst

A

Curettage. With few recurrence expected

55
Q

Epithelial entrapment within a line of embryologic closure with subsequent cystic change

A

Globulomaxillary cyst

56
Q

Epithelial entrapment in the midline of the mandible “fusion” of each half of the mandibular arch

A

Median mandibular cyst

57
Q

Aka as incisive canal cysts

A

Nasopalatine duct cyst

58
Q

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

A

Nasopalatine duct cyst

59
Q

Cyst that results of the fusion of the premaxilla with right and left palatal process

A

Nasopalatine duct cyst/median palatine cyst

60
Q

Most common non-odontogenic oral cyst

A

Nasopalatine duct cyst/median palatine cyst

61
Q

Develops from the proliferation of epithelial remnants of paired embryonic nasopalatine ducts within the incisive canal

A

Nasopalatine duct (incisive canal cyst)

62
Q

Symmetric swelling in the anterior region of the palatal mimdline or as a midline radiolucency

A

Nasopalatine duct cyst (incisive canal cyst)

63
Q

Lesion may produce divergence of the roots of the maxillary incisor teeth and less commonly, may induce external root resorption

A

Nasopalatine duct cyst

64
Q

Epithelial lining of nasopalatine duct cyst

A

Stratified squamous to pseudostratified colimnar

65
Q

Treatment nasopalatine duct cyst

A

Surgical enucleation

66
Q

No epithelial lining

Radiograph: round radiolucency with defined sclerotic border
Etiology: unknown

A

Pseudocyst

67
Q

Collection of blood within the lesion
No epithelial lining

A

Aneurysmal bone cyst

68
Q

Blood filled spaces lined by connective tissues and multi nucleated giant cells

Treatment: excision or curettage

A

Aneurysmal bone cyst

69
Q

Empty intrabony cavity tht lacks an epithelial lining

By far, the most common site of occurrence is mandible

A

Traumatic bone cyst

70
Q

Empty “dead” space is medullary bone

A

Traumatic bone cyst

71
Q

Treatment of traumatic bone cyst

A

Surgical entry to initiate bleeding and stimulate healing

72
Q

Located below the mandibular canal in molar region

A

Static (stafne’s) bone cyst

73
Q

Appears as a sharply circumscribed oval radiolucency beneath the level of the inferior alveolar canal, with encroachment on the inferior border of the mandible

A

Static (stafne’s) bone cyst

74
Q

Extraorally: Located in the lateral portion of the neck, usually anterior to the sternomastoid muscle

Intraoral: floor of the mouth

A

Branchial cyst / cervical lymphoepithelial cyst

75
Q

Epithelium entrapped in the cervical lymph nodes during embryogenesis

A

Branchial cyst / cervical lymphoepithelial cyst

76
Q

Histopath of branchial cyst

A

Lined with stratified squamous epithelium, pseudostratified columnar epithelium, or both

Contains lymphoid aggregates

77
Q

The epithelium of this cyst lacks cytomorphological evidence of malgnancy

A

Branchial cyst / cervical lymphoepithelial cyst

78
Q

Treatment of branchai lcyst

A

Surgical excision

79
Q

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

A

Dermoid csyst

80
Q

Histopath of dermoid cyst

A

Stratified squamous epithelium

81
Q

Treatment for dermoid cyst

A

Surgical excision

82
Q

Most common developmental cysts of the neck

A

Thyroglossal tract cyst

83
Q

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

A

Thyroglossal tract cyst

84
Q

Hyoid bone:
Upper - stratified squamous epi
Lower - ciliated columnar/columnar epi

A

Thyroglossal tract cyst

85
Q

Clinical term that invludes both mucus extravasation phenomenon and mucus retention cyst

A

Mucocele

86
Q

Clinical term that is used to describe a mucocele occurring in the floor of the mouth

A

Ranula

87
Q

Traumatic severance of a salivary gland excretory duct, resulting in the escape of mucus, or extravasation, into the surrounding connective tissue

A

Mucus extravasation phenomenon

88
Q

Most common site of mucus extravasation

A

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
Q

Presents as arelatively painless smooth surfaced mass ranging in the size from mm to 2cm in diameter

A

Mucus extravasation

90
Q

Treatment of mucus extravasation

A

Surgical excision and removal of associated minor salivary gland to prevent recurrence

Superficial mucocele: wala

91
Q

Results from obstruction of salivary flow caused most commonly by a sialolith

A

Mucus retention cyst (obstructive sialadenitis)

92
Q

A precipitation of calcium salts around a central nidus of cellular debris, inspissated mucin and/or bacteria

A

Sialolith

93
Q

Content of sialolith

A

Calcium carbonate and calcium phosphate

94
Q

Presents as asymptomatic swelling wo antecedent trauma

3 - 10 mm size

A

Mucus retention cyst

95
Q

In radiograph
Submandibular sialolith are __
Parotid stones are ___

A

Subman - radiopaque
Parotid - radiolucent

96
Q

Treatment for mucus retention cyst

A

Surgical excision of thecyst and associated gland to avoid recurrence

Oral Path Midterms (4 decks)

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