Shared Flashcard Set

Details

Oral Pathology
Cysts and Cyst Like Lesions
125
Pathology
Graduate
02/14/2010

Additional Pathology Flashcards

 


 

Cards

Term
What is the classification of cysts?
Definition
  • Odontogenic,
  • Developmental and
  • Pseudocysts
Term
What is dentigerous cyst?
Definition
Cyst associated with crown of an impacted tooth
Term
Dentigerous cyst originates from what?
Definition
Reduced enamel epithelium
Term
Dentigerous cyst occurs in what most common sites?
Definition
Third molars and canines
Term
Dentigerous cyst occurs at what age?
Definition
10 to 30 years
Term
What are other clinical features of dentigerous cyst?
Definition
  • May cause bony expansion or tooth displacement
  • Or root resorption
Term
What may develop in the lining of dentigerous cyst?
Definition
  • Ameloblastoma
  • Squamous cell carcinoma
  • Or mucoepidermoid carcinoma
Term
What is the differential diagnosis of dentigerous cyst?
Definition
  • Enlarged dental follicle or follicular fibrocyst
  • Odontogenic keratocyst
  • Unicystic ameloblastoma
Term
What is eruption cyst?
Definition
  • Type of dentigerous cyst
  • Fluctuant swelling over erupting tooth
Term
Eruption cyst is what color?
Definition
  • May be mucosa color
  • Or hemorrhagic (eruption hematoma)
Term
What is primordial cyst?
Definition
Rare cyst develops in place of a tooth
Term
What causes primordial cyst?
Definition
Degeneration of the enamel organ
Term
Nearly all primordial cysts are what?
Definition
Odontogenic keratocysts
Term
Primordial cyst usually occurs in what area?
Definition
Third molar area
Term
What radiolucency is primordial cyst?
Definition
Unilocular or multilocular
Term
Primordial cyst usually occurs in what age group?
Definition
Young adults
Term
Primordial cysts contain what?
Definition
Keratin or parakeratin
Term
Dentigerous cyst attaches at what junction?
Definition
Cemento enamel junction
Term
What is odontogenic keratocyst (OKC)?
Definition
Common keratinized cyst
Term
Odontogenic keratocyst usually occurs in what area?
Definition
Mandibular molar area
Term
What are other clinical features of odontogenic keratocyst?
Definition
  • Can be aggressive
  • High recurrence rate due to thin lining
  • May have multiple cysts
Term
What radiolucency is odontogenic keratocyst?
Definition
Usually unilocular but may be multilocular
Term
Odontogenic keratocyst is lined by what layer?
Definition
Thin and tortuous parakeratotic epithelial layer
Term
Multiple odontogenic keratocysts occur in what syndrome?
Definition
Nevoid basal cell carcinoma syndrome
Term
What is gingival cyst of the newborn?
Definition
Small superficial keratin filled cysts
Term
What causes gingival cyst of the newborn?
Definition
Remnants of dental lamina
Term
Gingival cyst of the newborn may rupture and disappear after how long?
Definition
2 months
Term
Gingival cyst of the newborn is found where?
Definition
Alveolar mucosa of infants
Term
What is gingival cyst of the adult?
Definition
Swelling on gingiva
Term
What causes gingival cyst of the adult?
Definition
  • Remnants of dental lamina
  • Possible traumatic implantation of surface epithelium
Term
Gingival cyst of the adult usually occurs in what area?
Definition
Mandibular premolar or canine area
Term
What color is gingival cyst of the adult?
Definition
Bluish
Term
What are other features of gingival cyst of the adult?
Definition
Not seen on x ray
Term
What is lateral periodontal cyst?
Definition
Unilocular cyst between roots of vital teeth
Term
What causes lateral periodontal cyst?
Definition
Rests of dental lamina
Term
Lateral periodontal cyst is found in what area?
Definition
Mandibular premolar or canine area
Term
What are other clinical features of lateral periodontal cyst?
Definition
  • Bony counterpart of gingival cyst of the adult
  • Tends not to recur
Term
What is the multilocular type of lateral periodontal cyst?
Definition
Botryoid odontogenic cyst
Term
What is calcifying odontogenic cyst?
Definition
Usually a bony cyst
Term
Calcifying odontogenic cyst is found where?
Definition
  • May occur anywhere in jaws
  • Some in gingiva
  • Usually anterior maxilla
Term
Calcifying odontogenic cyst occurs at what age?
Definition
About 33 years
Term
What are other clinical features of calcifying odontogenic cyst?
Definition
  • Probably true neoplasm not cyst
  • One third associated with unerupted tooth
Term
What are radiographic features of calcifying odontogenic cyst?
Definition
  • Unilocular or multilocular
  • Radiopaque in 50 percent of lesions
Term
What is ghost cell keratinization of calcifying odontogenic cyst?
Definition
  • Large pink eosinophilic cells
  • Without nuclei
  • Due to degeneration of epithelial cells
Term
What is another name for calcifying odontogenic cyst?
Definition
Gorlin cyst
Term
What is glandular odontogenic cyst?
Definition
Rare cyst due to glandular differentiation
Term
Glandular odontogenic cyst is found where?
Definition
  • In mandible
  • Usually anterior region of jaws
Term
Glandular odontogenic cyst occurs in what age group?
Definition
Adults
Term
What are radiographic features of glandular odontogenic cyst?
Definition
  • Unilocular or multilocular radiolucency
  • Trabeculation of bone
Term
What are other clinical features of glandular odontogenic cyst?
Definition
  • Large lesion may cause pain
  • Mucous cells within epithelial lining
Term
What is paradental cyst?
Definition
Variant of dentigerous cyst with history of pericoronitis
Term
Paradental cyst is located where?
Definition
  • Buccal aspect of roots of mandibular molars
  • Also distal to second molar
Term
Paradental cyst occurs at what age?
Definition
20 to 30 years
Term
What are other clinical features of paradental cyst?
Definition
  • Usually deep periodontal pocket
  • Intensely inflamed stratified squamous epithelium
Term
What causes paradental cyst?
Definition
Infection in most cases
Term
What are the odontogenic cysts?
Definition
  • Periapical granuloma and cyst
  • Residual,
  • Dentigerous,
  • Eruption and primordial cyst
  • Odontogenic keratocyst
  • Gingival cyst of the newborn and adult
  • Lateral periodontal cyst
  • Calcifying and glandular odontogenic cyst
  • Paradental cyst
Term
What are palatal cysts of the newborn?
Definition
Epstein pearls and bohn's nodules
Term
What are epstein pearls?
Definition
Epithelium entrapped along the median palatal raphe
Term
Bohn's nodules are derived from?
Definition
Minor salivary glands
Term
Bohn's nodules are located near what junction?
Definition
Hard and soft palate
Term
What are other clinical features of palatal cysts of the newborn?
Definition
  • White or yellow papules
  • May rupture onto mucosal surface
  • Usually disappear after several weeks
Term
What is nasolabial cyst?
Definition
Rare soft tissue cyst without bone involvement
Term
Nasolabial cyst usually occurs at what age and sex?
Definition
50 to 60 year old females
Term
Nasolabial cyst is lined by what?
Definition
Pseudostratified columnar epithelium
Term
What are other clinical features of nasolabial cyst?
Definition
  • Swelling of the ala of the nose
  • Usually bilateral
  • Not seen on radiograph
Term
What is globulomaxillary cyst / lesion?
Definition
  • Inverted pear shaped radiolucency
  • Between roots of maxillary lateral incisors and canines
  • Not true developmental cyst
Term
What are other clinical features of globulomaxillary cyst?
Definition
  • Adjacent teeth may be vital
  • Divergence of roots
Term
Globulomaxillary cyst may actually be what?
Definition
  • Periapical,
  • Lateral periodontal
  • Or odontogenic keratocyst
Term
What is another name for nasopalatine duct cyst?
Definition
Incisive canal cyst
Term
What is nasopalatine duct cyst?
Definition
Cyst in the region of incisive canal
Term
What causes nasopalatine duct cyst?
Definition
Proliferation of epithelial remnants of nasopalatine duct
Term
Nasopalatine duct cyst occurs at what age and sex?
Definition
40 to 60 year old males
Term
What are other features of nasopalatine duct cyst?
Definition
  • Heart shaped radiolucency
  • May also be soft tissue lesion in incisive papilla
Term
Nasopalatine duct cyst is lined by what?
Definition
  • Stratified squamous
  • To pseudostratified columnar epithelium
Term
What is median palatal cyst?
Definition
  • Rare radiolucency posterior to incisive papilla
  • In midline of palate
Term
What causes median palatal cyst?
Definition
  • Epithelium entrapped during fusion of lateral processes of maxilla
  • Or more posteriorly positioned nasopalatine duct cyst
Term
What are other clinical features of median palatal cyst? 
Definition
  • Asymptomatic
  • Sometimes similar to incisive canal cyst
Term
What is dermoid cyst?
Definition
Soft tissue cyst in the floor of mouth
Term
What are other clinical features of dermoid cyst?
Definition
  • Painless slow growing mass
  • Soft and doughy
  • Can cause elevation of tongue and interfere with speech and eating
Term
Dermoid cyst is filled with what skin structures?
Definition
  • Hair
  • Sebaceous and sweat glands
  • Occasionally teeth

 

Term
What size is dermoid cyst?
Definition
  • Usually less than 2 cm
  • But up to 10 cm in diameter
Term
What is epidermoid cyst?
Definition
Similar to dermoid cyst often filled with keratin
Term
Epidermoid cyst is lined by what?
Definition
Keratinized stratified squamous epithelium
Term
What is thyroglossal duct (tract) cyst?
Definition
  • Developmental cyst
  • Forms anywhere along embryologic tract between foramen caecum and thyroid
Term
Thyroglossal duct (tract) cyst usually occurs at what age?
Definition
First two decades of life
Term
What are other clinical features of thyroglossal duct (tract) cyst?
Definition
  • Painless
  • Fluctuant and movable swelling in midline
  • May be only functional thyroid tissue
Term
What is cervical lymphoepithelial cyst?
Definition
  • Cyst in neck
  • Composed of epithelium trapped in lymph nodes
Term
Cervical lymphoepithelial cyst usually occurs in what age group?
Definition
Late childhood and young adulthood
Term
What are other clinical features of cervical lymphoepithelial cyst?
Definition
  • Fluctuant
  • Lateral neck mass
Term
What is oral lymphoepithelial cyst?
Definition
Uncommon cyst develops in oral lymphoid tissue
Term
What are clinical features of oral lymphoepithelial cyst?
Definition
Small yellow mass often in floor of mouth
Term
What is within the cyst wall of oral lymphoepithelial cyst?
Definition
Lymphoid tissue
Term
What is surgical ciliated cyst of maxilla?
Definition
  • Cyst of the maxilla
  • Following maxillary sinus surgery
Term
What causes surgical ciliated cyst of maxilla?
Definition
Epithelium becomes implanted at surgery site
Term
What are clinical features of surgical ciliated cyst of maxilla?
Definition
  • May or may not have swelling
  • Possible vague pain
Term
How do you treat surgical ciliated cyst of maxilla?
Definition
Cystectomy
Term
What is heterotopic oral gastrointestinal cyst?
Definition
  • Choristomatic cyst
  • Normal epithelium in an abnormal location
Term
What causes heterotopic oral gastrointestinal cyst?
Definition
Stimulation of misplaced embryonic gastric tissue
Term
Heterotopic oral gastrointestinal cyst occurs in what age group?
Definition
Infants or young children
Term
Heterotopic oral gastrointestinal cyst usually occurs where?
Definition
Floor of mouth
Term
What are the developmental cysts?
Definition
  • Palatal cysts of the newborn
  • Nasolabial and nasopalatine canal cyst
  • Globulomaxillary cyst
  • Median palatal,
  • Dermoid and epidermoid cyst
  • Thyroglossal duct (tract), cervical and oral lymphoepithelial cyst
  • Surgical ciliated cyst of maxilla
  • Heterotopic oral gastrointestinal cyst
Term
What are pseudocysts?
Definition
Cysts not lined by epithelium
Term
What is another name for traumatic bone cyst?
Definition
Simple bone cyst
Term
What is traumatic bone cyst?
Definition
Empty intrabony cavity with no epithelial lining
Term
What causes traumatic bone cyst?
Definition
  • Unknown
  • May be associated with trauma
  • Possible degeneration of tumors of bone
Term
Traumatic bone cyst most often occurs in what age group?
Definition
Teenagers
Term
Traumatic bone cyst is usually found where?
Definition
In the mandible
Term
What are other clinical features of traumatic bone cyst?
Definition
  • Asymptomatic
  • May have swelling
Term
What are radiographic features of traumatic bone cyst?
Definition
  • Radiolucency
  • Characteristic interradicular scalloping
Term
How do you treat traumatic bone cyst?
Definition
  • Surgical entry to initiate bleeding for blood to flow inside
  • Some may heal spontaneously
Term
What is another name for lingual mandibular salivary gland depression?
Definition
Static bone cyst
Term
What is lingual mandibular salivary gland depression?
Definition
  • Well defined lingual mandibular surface depression
  • Filled with salivary gland tissue
Term
Lingual mandibular salivary gland depression is usually what gland?
Definition
Submandibular
Term
Lingual mandibular salivary gland depression usually occurs at what age and sex?
Definition
Adult males
Term
What are other clinical features of lingual mandibular salivary gland depression?
Definition
  • Not a cyst
  • Asymptomatic
  • May be bilateral
Term
What are radiographic features of lingual mandibular salivary gland depression?
Definition
  • Oval radiolucency between mandibular canal and inferior border
  • Second and third molar area
Term
What is aneurysmal bone cyst?
Definition
Vascular lesion of jaws and other bones
Term
What causes aneurysmal bone cyst?
Definition
Unknown
Term
Aneurysmal bone cyst occurs at what age?
Definition
About 20 years
Term
Aneurysmal bone cyst usually occurs in what area?
Definition
Posterior area
Term
What are other clinical features of aneurysmal bone cyst?
Definition
  • Very vascular
  • May have pain
  • Often causes swelling
Term
What radiolucency is aneurysmal bone cyst?
Definition
Often multilocular
Term
What are histologic features of aneurysmal bone cyst?
Definition
  • Fibrous stroma with many vascular spaces (blood filled)
  • Many multinucleated giant cells
Term
How do you treat aneurysmal bone cyst?
Definition
Curettage or enucleation
Term
What are the three pseudocysts?
Definition
  • Traumatic bone cyst
  • Lingual mandibular salivary gland depression
  • Aneurysmal bone cyst
Supporting users have an ad free experience!