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Oral Pathology > CYSTS > Flashcards

CYSTS Flashcards

(72 cards)

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1
Q

Cyst?

A

Epithelial lining
Fluid filled cavity
Fibrovascular connective tissue capsule

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2
Q

Management of cysts

A

Enucleation
Enucleation with curettage
Marsupialization followed by enucleation and curettage

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3
Q

Classify cyst

A

Odontogenic
Non odontogenic
Pseudocysts

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4
Q

Nasolabial cyst also known as

A

Nasoalveolar cyst

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5
Q

Nasolabial cyst features

A

Developmental cyst
Soft tissue cyst

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6
Q

Pathology of nasolabial cyst

A

Arises from remnants of cells that form the nasolacrimal ducts or fusion of maxillary medial nasal and lateral nasal processes

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7
Q

Clinical presentation of nasolabial cyst

A

Swelling in the upper lip lateral to the midline
Elevation of ala of the nose
Recurrence is rare

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8
Q

Nasopalatine duct cyst also known as

A

Incisive canal cyst

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9
Q

Most frequent type of non odontogenic cyst

A

Nasopalatine duct cyst
Also known as incisive canal cyst

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10
Q

Pathology of nasopalatine duct cyst

A

Arises from epithelial rest cells from the remnants of nasopalatine duct

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11
Q

Location of nasopalatine duct cyst

A

Within the nasopalatine duct
Or right outside the orifice of the canal - palatine papilla

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12
Q

Clinical presentation of nasopalatine duct cyst

A

Swelling in the anterior palate accompanied by pain and drainage

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13
Q

Radiographic presentation of nasopalatine duct cyst

A

Heart shaped or inverted pear shape
Well circumscribed radiolucency at the midline between and apical to central incisors

May result in root divergence
Teeth are VITAL

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14
Q

Another name for nasopalatine duct cyst

A

Median anterior maxiallary cyst

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15
Q

How can we differentiate between incisive foramen and naospalatine duct cyst

A

Less than 6mm - incisive foramen
6mm or more - nasopalatine duct cyst

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16
Q

Pathology of median palatine cysts

A

Developed during to entrapped epithelium at the line of fusion between lateral palatal shelves

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17
Q

Clinical presentation of mediam palatine cysts

A

Fluctuant swelling
Posteriot to palatine papilla on the midline of the hard palate
Asymptomatic

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18
Q

Radiographic presentation of median palatine cysts

A

Well circumscribed radiolucency in the midline of hard palate on occlusal xray

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19
Q

Palatal cysts of newborn types

A

Epstein pearls
Bohns nodules

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20
Q

Pathology of palatal cysts of the newborn

A

Fissural/ developmental cysts

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21
Q

Difference between epsteins pearls and bohns nodules

A

Epstein pearls - small 1-3 mm yellowish papules on the median palatal raphe

Bohns nodules - small papules scattered over hard palate often near soft palate junction

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22
Q

Most common development cysts of the neck?

A

Thyroglossal duct cyst

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23
Q

Clinical presentation of thyroglossal duct cyst

A

Asymptomatic
Fluctuant
Movable swelling

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24
Q

Brachial cleft cyst also known as

A

Cervical lymphoepithelial cysts

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25
Pathology of brachial cyst
Arises frim remnants of the brachial arched - 2nd arch most commonly
26
Why is it important to do fine needle aspiration of branchial cleft cyst?
To rule out malignancy Metastatic SCC may present as lateral neck mass
27
Intraoral counter part of the brachial cyst?
Oral lymphoepithelial cyst Small in size Develops within the lymphoid tissue IO
28
Clinical presentation of oral lymphoepithelial cyst
Paineless White yellowish Small less than 1cm in diameter Firm or soft submucusal swelling Usually seen on floor of the mouth Ventral tongue Post lateral tongue Palatine tonsil Soft palate
29
Developmental cyst arises from embryological epithelial remnants
Dermoid cyst
30
Dermoid cyst histology?
Cyst lined by epidermic like epithelium Contains dermal structures such as sebaceous glands Hair follicles Sweat glands
31
What is teratoma?
Tissue composed of more than one germ layer and sometimes all 3 ectoderm mesoderm endoderm
32
Clinical presentation of dermoid cyst
Midline floor of the mouth Painless slow growing swelling Soft and doughy
33
Most common odontogenic cyst
Radicular cyst
34
Most common developmental cyst
Dentigerous cyst
35
Dentigerous cysts also known as
Follicular cyst
36
Dentigerous cyst arises from?
Separation of the follicule from the crown of unerupted tooth by accumulation of fluid between reduced enamel epithelium and tooth crown
37
Features of dentigerous cysts
2nd 3rd decades Associated with impacted 3rd molars followed by max canines Max 3rd molars And mand 2nd premolars ALWAYS ATTACHED TO THE CEJ
38
Radio features of dentigerous cysts
Unilocular radiolucency Well circumscribed radiolucent area Crown of an unerupted tooth Displacement of the involved tooth and adjacent teeth
39
Presentation of dentigerous cyst in maxillary sinus
Affects max 3rd molars Circular or oval radiopacity Well defined thin corticated borders (radiopaque lining around the cyst)
40
Difference between dentigerous cyst in maxillary sinus and antral pseudocyst
Dentigerous cyst - corticated borders Antral pseudocyst - no corticated borders
41
Complications of dentigerous cyst
If left untreated- AMELOBLASTOMA
42
Differentiation between dentigerous cyst and normal dental follicle
Less than 5mm - tooth follicle More than 5mm - dentigerous cyst
43
Soft tissue variant of dentigerous cyst
Eruption cyst
44
Features of eruptioncyst
Mainly in primary dentition Deciduous mand central Incisor First perm molars Dec max incisors
45
Clinical presentation of eruption cyst
Smooth surface Reddish pink or bluish fluctuant localised swelling on the alveolar ridge over the crown of an erupting tooth
46
Features of Lateral periodontal cyst
Developmental odontogenic cyst Arises from rests cells if dental lamina Found along the lateral surface of the root of the tooth Mandibular canine premolar area
47
Botryoid odontogenic cyst
Term used for lateral periodontial cyst when it has a multilocular presentation
48
Radio features of lateral perio cyst
Well circumscribed unilocular Teardrop shape Located laterally Between canine and premolar in mandible Teeth are VITAL
49
Soft tissue counterpart of lateral periodontal cyst?
Gingival cyst of adulthood
50
Gingival cyst of the newborn
Multiple white nodules along the MAXILLARY alveloar ridge if neonates filled with keratin and sometimes Near the soft palate junction Remnants of dental lamina
51
Cysts arising from developing tooth bud before enamel and dentine formation, resulting in missing tooth from the dental arch
Primordial cyst Cystic degeneration in stellate reticulum layer
52
Diff between primordial cyst and residual cyst
Primordial - during formation of tooth bud Residual - cyst arising at the site of extraction
53
Keratocystuc odontogenic tumor also known as
OKC
54
Features of OKC
High recurrence rate - 10-30% Ages 10-40 Males Arises from rests of dental lamina Posterior mandible Body and ramus area Grows anterior posterior Unilocular/multilocular
55
Radio features of OKC
Multilocular or unilocular May resemble dentigerous cyst Histodifferentiation is imp to rule out
56
Histo features of OKC
Uniformly thin epi lining Palisaded pattern with hyperchromatic nuclie of the basal layer Para keratinized epi layer produce wavy or corrugated pattern Para is more aggressive than orthokeratinized
57
Lesions found in children with multiple OKC, basal cell carcinoma, calicified falx cerebri, palmar plantar pits, enlarged head, rib anomalies , mild hypertelorism
NEAVOID BASAL CELL CARCINOMA OR gorlin goltz SYNdrome
58
Carnoys solution?
Used to kill the residual cells of OKC to prevent recurrence 60% ethanol 30% chloroform 10% acetic acid 1 gm of ferric chloride
59
Calcifying odontogenic cyst also known as
Calcifying cystic odontogenic tumor gorlin cyst
60
Features of calcifying odontogenic cyst
Odontogenic epithelial remnants Incisor canine area - impacted canine Ghost cells - enlarged eosinophillic epi cells without nuclei - radioopaque on xray
61
Radio features of califying odontogenic cyst
Unilocular or multilocular radiolucency well demarcated margins
62
Radicular cyst also known as
Periapical cyst
63
Features of radicular cyst
Most common odontogenic cyst Arising from preexisting periapical granuloma at the apex of nonvital tooth Rest cells of malassez
64
Difference between periapical granuloma and granulation tissues
Periapical granuloma - inflamed granulation tissues surrounded by fibrous CT wall Granulation tissue- fibroblasts cappillaries and ch inflammatory cells
65
Features of radicular cyst
Asymptomatic Root resorption Mobility Doesn’t not respond to thermal and EPT
66
Rushton bodies and cholesteol clefts are seen in
Radicular cyst
67
Other names of buccal bifurcation cyst
Mandibular infected buccal cyst Paradental cyst
68
Features of buccal bifurcation cyst
Painful swelling Buccal to the furcation of mandibular first molar Followed by mandibular second molar Sometimes present bilaterally Tooth is vital DEEP PERIO POCKET can result from cervical enamel extension
69
Well defined unilocular radiolucency involcing buccal bifurcation and root area Tipped tooth crown buccaly and root lingually seen on the occlusal xray
BUCCAL BIFURCATION CYST
70
Simple bone cyst also called
Traumatic bone cyst Soltary bone cyst
71
Features of traumatic or solitary bone cyst
Asymptomatic intraossues empty cavity Lined by CT not epi Young patients In mandible between canine and ramys Teeth are vital Xray - INTERRADICULAR SCALLOPING
72
Asymptomatic radiolucency in mandible due to invagination of the lingual surface of jaw posteriorly below mand canal
Stafne bone cyst

Oral Pathology (16 decks)

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