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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