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Glossary of Oral Patology Section II

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Soft Tissue Lesions
Reactive lesion, or 'true' neoplasia? Overgrowth is in response to irritation
Reactive lesion
Reactive lesion, or 'true' neoplasia? Associated with a stimulus
Reactive lesion
Reactive lesion, or 'true' neoplasia? Usually inflammation a consistent finding
Reactive lesion
Reactive lesion, or 'true' neoplasia? Growth continues after stimulus is removed/no stimulus required
'true' neoplasia
Reactive lesion, or 'true' neoplasia? No regression with normal therapy
'true' neoplasia
Reactive lesion, or 'true' neoplasia? Unrestricted new growth
'true' neoplasia
What is the most common 'tumor'/lesion in the oral cavity?
Irritation fibroma
Where is the most common location to find an irritation fibroma?
Buccal mucosa, at the occlusal plane
What age group and gender is most often affected by irritation fibromas?
40-60 year old females
What two colors are irritation fibromas (usually)?
1 Pink (same shade as mucosa) 2 White from hyperkeratosis
Name 3 histological findings in irritation fibromas.
1 Dense CT 2 Inflammatory cells 3 Stratified squamous epithelium
What is the term used for an irritation fibroma caused by a denture?
Epulis Fissuratum
What characterizes Epulis Fissuratum?
Long folds of dense CT
Name 3 common causes for papillary hyperplasia.
1 Ill-fitting dentures 2 Dentures worn 24 hours/day 3 Poor denture hygiene
What clinical feature is pathognomonic for Epulis Fissuratum?
Raspberry, bubbly, papillary look, usually on hard palate
What microorganism is often to blame for Epulis Fissuratum?
Candida
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Usually on gingiva, but occur anywhere
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Bright red color
Pyogenic granuloma OR ulcerated peripheral fibroma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Bleeds easily
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Painless
Pyogenic granuloma and peripheral giant cell granuloma for sure
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Caused by irritation
All three
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Develops rapidly
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? More common in children and young adults
Pyogenic granuloma and peripheral fibroma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Found in pregnant women
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Female predilection
All three
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Histologically has endothelial lined vascular spaces
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Most common of the three
Pyogenic granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Bluish-purple in color
Peripheral Giant Cell Granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Pink color
peripheral fibroma OR Peripheral Giant Cell Granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Affects individuals around age 30
Peripheral Giant Cell Granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Can only occur on the gingiva
Peripheral Giant Cell Granuloma or Peripheral fibroma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Histologically has CT stroma, mesenchymal cells, and multinucleated giant cells
Peripheral Giant Cell Granuloma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Results from pyogenic granuloma developing over time
Peripheral fibroma
Pyogenic granuloma, peripheral giant cell granuloma, or peripheral fibroma (or more than one)? Histologically has dense CT with mineralization (calcified or ossified)
Peripheral (ossifying) fibroma
What term is used for red vascular tissue growing out of recent extraction site or socket?
Epulis Granulomatosa
Name the most common oral area to have a lipoma.
Buccal mucosa
What color is a lipoma?
Yellowish
What kind of cells are subject to neurolemoma?
Schwann cells (it's also called a schwannoma)
Are neurolemomas fast or slow-growing?
Slow-growing
Name the most common oral area to have a neurolemoma.
Tongue
What soft tissue lesion is associated with Antoni A and B tissue types?
Neurolemoma (Schwannoma)
What soft tissue lesion is associated with Verocay bodies?
Neurolemoma (Schwannoma)
Name the most common peripheral nerve neoplasm, which is rare but not uncommon.
Neurofibroma
What soft tissue lesion is associated with spindle cells, and Mast cells intermingled with neurites?
Neurofibroma
Name the hereditary/systemic form of neurofibromas.
Von Recklinghausen's Disease of the Skin
Name two clinical features of Von Recklinghausen's Disease of the Skin.
1 Multiple neurofibromas 2 Café au lait spots
What 'neoplasm' occurs when a damaged nerve attempts to repair itself?
Traumatic neuroma
Is a Traumatic neuroma painless or painful?
Painful
What lesion has the following histology: Neurofibrils and Schwann cells in CT?
Traumatic neuroma
What is the most common tumor of infancy?
Hemangioma
What causes a hemangioma?
Proliferation of blood vessels
What color is a hemangioma?
Deep blue (this helps diagnose)
If a hemangioma is present as a large, flat lesion of the skin, what term is used?
Birthmark
If a hemangioma is present as a large, unilateral lesion on the face following the division of the trigeminal nerve, what term is used?
Port-wine stain
What type of biopsy must be done on a hemangioma: Incisional or excisional?
Excisional, because it bleeds profusely with incisional
What is "diascopy"?
Blanching with pressure
A hemangioma (does/does not) blanch with pressure.
DOES
If a hemangioma is present due to small capillary proliferation, what disease is this?
Hereditary Hemorrhagic Telangiectasia (Osler-Weber-Rendu)
What disease features Port-wine stian, and maybe convulsive disorders and mental retardation due to calcifications in the brain?
Sturge-Weber Syndrome
What is more common, hemangioma or lymphangioma?
Hemangioma
How can you differentiate a lymphangioma from a hemangioma?
Lymphangiomas are pink, or colorless, not red.
If a lymphangioma is present in the tongue, what syndrome could occur secondarily?
Macroglossia
Name the most common oral area to have a granular cell tumor.
Tongue
What lesion has the following histology: Large, granular cells with eosinophils, keratin production, and pseudoepitheliomatous hyperplasia?
Granular cell tumor
What soft tissue lesion may be confused with carcinoma?
Granular cell tumor
What disease features fibroma-looking lesion at birth?
Congenital Granular Cell Epulis
Where is the most common location to find a Congenital Granular Cell Epulis?
Maxillary anterior gingiva
T/F: Congenital Granular Cell Epulis most commonly affects males.
False; the predilection is 90% female, suggesting a hormonal link
What disease features rapidly-growing dark, pigmented lesion at birth?
Melanotic Neuroectodermal Tumor of infancy
What disease is associated with high levels of vanilmadelic acid in the urine?
Melanotic Neuroectodermal Tumor of infancy
What lesion has the following histology: Mass of cells arranged in a pattern of alveolus-like spaces, lined by cuboidal cells, maybe containing melanin?
Melanotic Neuroectodermal Tumor of infancy
Pigmented Lesions
What is another name for physiologic (racial) pigmentation?
Melanoplakia
Name the most common location for physiologic (racial) pigmentation/melanoplakia.
Attached gingiva
What causes physiologic (racial) pigmentation/melanoplakia?
Increased ACTIVITY (not number) of melanocytes
Name two risk factors (besides smoking) for Smoker's Melanosis.
1 Female 2 Females on the Pill
Name the three most common areas to see Smoker's Melanosis.
1 Mandibular anterior (gingiva) 2 Buccal mucosa 3 Palate
Is Smoker's Melanosis premalignant?
No, not alone
Does Smoker's Melanosis go away after quitting smoking?
Yes, probably
T/F: Oral Melanotic Macules are due to sun-exposure.
False, freckles are
What disease histologically features an increase in melanin granules, which is confined to the basal cell layer?
Oral melanotic macule
What is the most common of all human 'tumors'?
Pigmented Cellular Nevus/ Acquired melanocytic nevus/Mole
Name 2 synonyms for a mole.
1 Pigmented Cellular Nevus 2 Acquired melanocytic nevus
What's the difference between a mole and a freckle (ephelis)?
A mole does NOT depend on sun exposure; freckles do.
What do nevus cells look like (4)?
1 Large 2 Oval 3 Epithelioid 4 Arranged in clumps
What type of mole do all moles start out as?
Junctional nevus
What variant of mole is the second most common intraoral nevus?
Blue
Malignant melanoma is the (#) most common skin cancer. ____% of skin melanomas occur in the head/neck area. (Chronic/acute) sun damage is more important when it comes to malignant melanoma. The lifetime risk for a __(ethnicity)__ to get malignant melanom
3rd most common. 25% in head and neck. Acute is worse. Caucasians 1:100 will get them.
What is the most common type of Malignant melanoma?
Superficial spreading melanoma
What type of Malignant melanoma is multicolored and flat?
Superficial spreading melanoma
1/3 of this type of Malignant melanoma are in the head and neck area.
Nodular melanoma
What type of Malignant melanoma is elevated, and sometimes has no pigmentation?
Nodular melanoma
What type of Malignant melanoma is melanoma in situ?
Lentigo maligna melanoma
What is the most common type of oral Malignant melanoma?
Acral lentiginous melanoma
Name the two most common sites for oral Malignant melanoma.
1 Maxillary anterior mucosa 2 Hard palate
Most oral Malignant melanomas are (primary/metastatic) and have (good/bad) prognosis.
Metastatic, bad
How does Addison's disease manifest in the skin/mucous membranes?
Bronzing
What are two clinical features of Peutz-Jeghers Syndrome?
1 Oral freckles (melanotic macules) 2 Intestinal polyposis
Cysts
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
Oral Infections
What is the most common type of oral change?
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Lowest recurrence rate of the three types.
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Childhood/Late teens - 20s
Aphthous Minor and Major
Minor, Herpetiform, or Major Aphthous: Affects more females than males
All three
Minor, Herpetiform, or Major Aphthous: Affects 20% of the general population
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Affects non-smokers
Aphthous Minor and Major
Minor, Herpetiform, or Major Aphthous: Caused by - Inherited and immunodysregulation, mucosa decrease, and antigen increase
Aphthous Minor and Major
Minor, Herpetiform, or Major Aphthous: Trauma, stress, allergies provoke them
Aphthous Minor and Major
Minor, Herpetiform, or Major Aphthous: Single and maybe Multiple, but no more than 3-5 at once
Aphthous Minor and Major
Minor, Herpetiform, or Major Aphthous: Non-keratinized sites
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Lasts 5 days - 2 weeks
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Tx is Antibiotics and topical corticosteroids, Levamisole
Aphthous Minor
Minor, Herpetiform, or Major Aphthous: Looks a lot like herpes simplex
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Most number of lesions of the three types
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Most frequent recurrence of the three types
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Young adults
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Multiple, 50-100 at once
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Sometimes on keratinized surfaces
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Lasts 7-10 days, with recurrence
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: Tx is topical steroids
Herpetiform Aphthous
Minor, Herpetiform, or Major Aphthous: 2nd most common of the three types
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Longest duration of the three types
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Very painful, may scar because they are large and deep
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Most common on labial mucosa and soft palate
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Lasts up to 6 weeks, with recurrence
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Cannot be treated with antibiotics
Aphthous Major
Minor, Herpetiform, or Major Aphthous: Tx is Non-systemic steroids, Orabase-Kenalog, Decadron, topical Tetracycline
Aphthous Major
Other than viral respiratory infections, what is the most common viral disease that affects humans?
Herpes Simplex I and II
What is the primary mode of transmission, during a/symptomatic?
Asymptomatic
What is another name for primary herpes simplex?
Acute Herpetic Gingivostomatitis
When does Primary herpes simplex usually occur?
1-5 years old
Which features ulcers on the gingiva: Aphthous ulcers or primary herpes simplex?
Primary Herpes simplex
Name the only place that Recurrent Intraoral Herpes Simplex can occur.
Mucosa that is bound to periosteum (gingiva and hard palate)
What often causes Recurrent Intraoral Herpes Simplex?
Dental treatment
Epithelial Odontogenic Tumors
What is the most common clinically significant odontogenic tumor?
Ameloblastoma
Common, Unicystic, or Peripheral Ameloblastoma: Average age of occurrence is 30 years old.
Common
Common, Unicystic, or Peripheral Ameloblastoma: Benign aggressive
Common
Where do 85% of Common ameloblastomas occur?
Posterior mandible
Common, Unicystic, or Peripheral Ameloblastoma: Multilocular radiolucency with small compartments
Common
How do you differentate the multilocular radiolucency of a common ameloblastoma from a cyst?
Ameloblastoma has SMALL compartments, but cysts have BIG compartments
What disease features nests of odontogenic epithelium with stellate reticulum inside a rim of columnar ameloblasts?
Common Ameloblastoma
What disease features connective tissue stroma separating epithelial nests?
Common Ameloblastoma
Common, Unicystic, or Peripheral Ameloblastoma:Not encapsulated
Common
Common, Unicystic, or Peripheral Ameloblastoma: Resection is the typical treatment
Common
If a Common ameloblastoma is curetted, what is the recurrence rate (____-____%)?
50-90%
Name a differential diagnosis for Common ameloblastoma, and why it is similar.
Simple bone cyst - Scalloped border
Common, Unicystic, or Peripheral Ameloblastoma:Benign and not locally destructive
Unicystic
Common, Unicystic, or Peripheral Ameloblastoma:Average age of occurrence is 23 years old
Unicystic
Where do 90% of unicystic ameloblastomas occur?
Posterior mandible
Common, Unicystic, or Peripheral Ameloblastoma: Unilocular radiolucency, well-circumscribed
Unicystic
What disease features a cystic cavity, lined by ameloblasts, filled with stellate reticulum?
Unicystic Ameloblastoma
Common, Unicystic, or Peripheral Ameloblastoma: Capsulated
Unicystic

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