Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
96 Cards in this Set
- Front
- Back
|
What are the three structural parts of a cyst?
|
1 Central cavity (containing fluid, etc) 2 Lining (usually strat squa) 3 CT Capsule
|
|
|
How are cysts usually discovered?
|
Routine exam/xrays
|
|
|
Name the cyst characterized by a non-vital tooth, inflammation, radiolucent, derived from rest of Malassez, either asympomatic or acute pain.
|
Dental Granuloma
|
|
|
Name the cyst characterized by a non-vital tooth, cholesterol clefts, radiolucent, either asympomatic or acute pain.
|
Radicular/Periradicular/Periapical Cyst
|
|
|
Name the cyst that develops from fragments of an apical cyst after removal of a tooth.
|
Residual cyst
|
|
|
Name the cyst that is associated with the crown of a normal/supernumerary impacted tooth.
|
Dentigerous cyst
|
|
|
What is the origin of a dentigerous cyst?
|
Reduced enamel epithelium, after the crown has formed
|
|
|
Name the 2 most common sites for a dentigerous cyst.
|
1 3rd molars 2 Maxillary cuspids
|
|
|
Dentigerous cysts usually occur from age ____ to ____, and is lined by ______ _________ epithelium.
|
10-30, stratified squamous epi
|
|
|
Name 3 possible progressions of a dentigerous cyst.
|
1 Ameloblastoma 2 Squamous cell carcinoma 3 Mucoepidermoid carcinoma (salivary gland tumor)
|
|
|
If a radiolucency is less than 2.5 mm, it is probably not a dentigerous cyst, but is probably…
|
Perifollicular fibrosis
|
|
|
Can you see an eruption cyst on an xray?
|
NO
|
|
|
Name the cyst that is a soft-tissue counterpart of a dentigerous cyst.
|
Eruption cyst
|
|
|
Name the cyst that develops in place of a tooth (no history of extraction or existing tooth).
|
Primordial cyst
|
|
|
What is the origin of a primordial cyst?
|
Remnants/degeneration of the enamel organ
|
|
|
Where is the most common location to find a primordial cyst?
|
3rd molar area
|
|
|
T/F: Primordial cysts can be multilocular.
|
TRUE
|
|
|
Name the cyst that shows keratinization.
|
Odontogenic keratocyst
|
|
|
What is the origin of an Odontogenic keratocyst?
|
Dental lamina/cell rests
|
|
|
Odontogenic keratocysts are (rare/common) make up ___-____% of all odontogenic cysts. OKC affects ____-____ year olds. They are lined by (thin/thick) epithelium.
|
Common, 3-11% of all odontogenic cysts, 10-40 year olds. Thin
|
|
|
What is the most common location to find an Odontogenic keratocyst?
|
Mandibular molar area
|
|
|
T/F: Odontogenic keratocysts can be aggressive.
|
True, can cause tooth movement and resorption
|
|
|
Name the syndrome which features multiple Odontogenic keratocysts.
|
Jaw cyst-basal cell nevus-Bifid rib syndrome
|
|
|
T/F: Odontogenic keratocysts can be multilocular.
|
TRUE
|
|
|
On an xray, name two things that Odontogenic keratocysts may resemble (and cannot be differentiated from).
|
1 Dentigerous cyst 2 Lateral periodontal cyst
|
|
|
Name a unique histologic feature of Odontogenic keratocysts.
|
Satellite cysts
|
|
|
T/F: Recurrence rate is high for Odontogenic keratocysts.
|
True, due to satellite cysts and wavy epi lining
|
|
|
Name a variant of Odontogenic keratocysts. Is its recurrence rate higher or lower than Odontogenic keratocysts?
|
Orthokeratinized odontogenic cyst. Recurrence is much lower (2% instead of 30%)
|
|
|
T/F: Gingival cyst of the newborn is rare.
|
False, it is found in 50% of all newborns!
|
|
|
What is the origin of Gingival cyst of the newborn and adult?
|
Remnants of the dental lamina
|
|
|
T/F: Gingival cyst of the adult is rare.
|
TRUE
|
|
|
Where is the most common area to find a Gingival cyst of the adult?
|
Mandibular bicuspid/anterior area
|
|
|
Name the cyst that is the bony counterpart to a gingival cyst of the adult.
|
Lateral periodontal cyst
|
|
|
T/F: Lateral periodontal cysts can be multilocular.
|
True, it would be called a Botryoid odontogenic cyst
|
|
|
Where is the most common area to find a Lateral periodontal cyst?
|
Mandibular premolar/cuspid area
|
|
|
Name the multilocular variant of a Lateral periodontal cyst.
|
Botryoid odontogenic cyst (grape-like cluster)
|
|
|
T/F: Recurrence rate is high for Lateral periodontal cysts.
|
False, it is low
|
|
|
Name the cyst that is more like a neoplasm than a cyst.
|
Calcifying Odontogenic Cyst (Gorlin cyst)
|
|
|
Where is the most common area to find a Calcifying Odontogenic Cyst (Gorlin cyst)?
|
Trick question - it's found equally in maxilla and mandible, but tends to be in the anterior area
|
|
|
Name a unique histologic feature of a Calcifying Odontogenic Cyst (Gorlin cyst).
|
Ghost cells, usually with calcifications (diffuse or clumpy)
|
|
|
Name the cyst that has glandular differentiation.
|
Glandular Odontogenic Cyst
|
|
|
Where is the most common area to find a Glandular Odontogenic Cyst?
|
Mandibular anteriors
|
|
|
What is a (better) synonym for a paradental cyst?
|
Buccal bifurcation cyst
|
|
|
Name the cyst that usually occurs on mandibular molars that have a history of pericoronitis.
|
Paradental/Buccal bifurcation cyst
|
|
|
What is the cause of Paradental/Buccal bifurcation cysts?
|
Infection stimulates Inflammation, which stimulates rests of Malassez to make enamel
|
|
|
What is the age predilection for Paradental/Buccal bifurcation cysts?
|
20-30 years old
|
|
|
Name the most common site to find a Paradental/Buccal bifurcation cyst.
|
Mandibular second/third molars
|
|
|
Name the cyst that is small, white, and found on the palate of newborns. Name 2 synonyms.
|
Palatal cyst of the newborn. 1 Epstein Pearls 2 Bohn's Nodules
|
|
|
Name the cyst that is caused by ectoderm entrapped in median palatal fusion line and/or epithelial remnants of developing palatal salivary glands.
|
Palatal cyst of the newborn/ Epstein Pearls/Bohn's Nodules
|
|
|
What is one differential diagnosis for Palatal cyst of the newborn?
|
Gingival cyst of the newborn
|
|
|
Name the rare soft tissue cyst affecting the lower portion of the nasolacrimal duct.
|
Nasolabial or Nasoalveolar cysts
|
|
|
Nasolabial or Nasoalveolar cysts affect more (males/females).
|
Females
|
|
|
Name the characteristic histological feature of Nasolabial or Nasoalveolar cyst.
|
Psuedostratified columnar epithelium
|
|
|
Name the cyst that occurs between the roots of the maxillary lateral and canines.
|
Globulomaxillary cyst
|
|
|
What shape is a Globulomaxillary cyst, usually?
|
Pear-shaped
|
|
|
Name 3 differential diagnoses for Globulomaxillary cysts.
|
1 Periapical cysts 2 Odontogenic cysts 3 Lateral periodontal cysts
|
|
|
Name the cyst that occurs in the incisive canal.
|
Nasopalatine Duct/Incisive Canal cyst
|
|
|
What is the soft-tissue counterpart of the Nasopalatine Duct/Incisive Canal cyst?
|
Palatine papilla cyst
|
|
|
Does the Nasopalatine Duct/Incisive Canal cyst affect (non/vital) teeth?
|
Vital
|
|
|
Nasopalatine Duct/Incisive Canal cysts usually occur in (males/females) age ____-_____.
|
Males, 40-60
|
|
|
What is the rule of thumb for Nasopalatine Duct/Incisive Canal cysts?
|
If it is less than .6 mm, it is probably just an enlarged incisive canal
|
|
|
Where is the most common location for Nasopalatine Duct/Incisive Canal cysts?
|
Between the maxillary centrals
|
|
|
What shape is a Nasopalatine Duct/Incisive Canal cyst, usually?
|
Heart-shaped
|
|
|
Name the cyst that is located posterior to the incisive papilla in the midline of the hard palate.
|
Median palatal cyst
|
|
|
Name the cyst that is lined by keratinized stratified squamous epithelium and is often filled with keratin.
|
Epidermoid cyst
|
|
|
Name the cyst that is lined by keratinized stratified squamous epithelium and is often filled with sebaceous glands, hair follicles, bone, muscle, etc.
|
Dermoid cyst
|
|
|
What other neoplasm does a dermoid cyst resemble?
|
Teratoma
|
|
|
Where is the most common location for an epi/dermoid cyst?
|
Floor of the mouth
|
|
|
If the patient has a bulge in the floor of the mouth/has no neck, the epi/dermoid cyst is (above/below) the mylohyoid.
|
Above
|
|
|
If the patient has a double chin, the epi/dermoid cyst is (above/below) the mylohyoid.
|
Below
|
|
|
Name the cyst that occurs on the midline, between the foramen cecum of the tongue and the suprasternal notch.
|
Thyroglossal duct cysts
|
|
|
What causes a thyroglossal duct cyst?
|
Epithelial remnants of the thyroid migration turn into cysts
|
|
|
What is the treatment for a thyroglossal duct cyst, and why?
|
Remove, because it may turn malignant
|
|
|
What % of thyroglossal duct cysts occur below the hyoid?
|
70%
|
|
|
Name the cyst that comes from epithelium trapped in lymph nodes.
|
Cervical Lymphoepithelial cyst (Branchial Cleft Cyst)
|
|
|
Name the cyst that occurs in the lateral neck as an asymptomatic, slow-growing fluctuant mass.
|
Cervical Lymphoepithelial cyst (Branchial Cleft Cyst)
|
|
|
Name the cyst that occurs in oral lymphoid tissue, is yellow, and has no rete pegs.
|
Oral lymphoepithelial cyst
|
|
|
Where do 50% of oral lymphoepithelial cysts occur?
|
Floor of the mouth
|
|
|
Name the cyst that occurs in the maxilla, after a maxillary sinus surgery/extraction.
|
Surgical Ciliated Cyst of the maxilla
|
|
|
What type of lining does a Surgical Ciliated Cyst of the maxilla have?
|
Respiratory epi
|
|
|
What causes a surgical ciliated cyst of the maxilla?
|
Epi becomes implanted/trapped at the site of surgery and starts to proliferate and cavitate
|
|
|
Name the cyst that is similar to dermoid but has gastric/intestinal mucosa lining.
|
Heterotropic Oral Gastrointestinal Cyst/Anterior Median Lingual Cyst/Gastric Cystic Choristoma
|
|
|
What is the age and gender predilection for Heterotropic Oral Gastrointestinal Cysts?
|
Infants/young children, males
|
|
|
Where is the most common location for a Heterotropic Oral Gastrointestinal Cyst (2)?
|
1 Tongue 2 Floor of the mouth
|
|
|
Name the pseudocyst that should be completely obvious on a radiograph.
|
Simple bone cyst/Traumatic Bone cyst
|
|
|
Why is a Simple bone cyst not a cyst?
|
It has no epithelium, and the cavity is empty
|
|
|
What is a key characteristic on the radiographs for a Simple bone cyst?
|
Scalloped border
|
|
|
What is the age group for Simple bone cysts?
|
Young adults
|
|
|
Are simple bone cysts associated with (non/vital) teeth?
|
Vital
|
|
|
What is the treatment for a Simple bone cyst?
|
Curette to start bleeding, then it heals on its own
|
|
|
Name the pseudocyst that has salivary gland tissue in it.
|
Lingual Mandibular Salivary Gland Depression (Static bone cyst/Stafne bone cyst)
|
|
|
Name the pseudocyst that radiographically occurs as an ovoid lucency between the mandibular canal and inferior border, with a sclerotic border.
|
Lingual Mandibular Salivary Gland Depression (Static bone cyst/Stafne bone cyst)
|
|
|
Name the uncommon vascular lesion of jaws/bones that resembles a "blood-soaked sponge".
|
Aneurysmal Bone Cyst
|
|
|
Do Aneurysmal bone cysts occur mainly in the maxilla or mandible?
|
Mandible
|
|
|
What is a differential diagnosis for an Aneurysmal Bone Cyst?
|
OKC
|
|
|
Name three other lesions that may be associated with an Aneurysmal Bone Cyst.
|
1 Fibrous dysplasia 2 Hemangioma 3 Traumatic bone cyst
|
