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33 Cards in this Set
- Front
- Back
most common odontogenic tumor/“odontoma”. Aggressive, uni/multilocular, RL (no hard tissue induction = radiopacities), expansile lesion of the post mandible. Histo: Columnar odontogenic epithelium, basal cell nuclei = palisaded w/ reverse polarization, surrounding reminiscent “stellate reticulum.” Tx: surgical resection – recurrence common.
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Ameloblastoma
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uncommon, perio membrane origin à RL surrounding roots involving alveolar process = localized loosening of teeth. Histo: islands of bland squamous epithelium.
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Squamous Odontogenic Tumor
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aka Pinborg tumor: rare unil/multilocular RL +/- radiopaque foci. Less agg than ameloblastoma, mand > max. Histo: droplet-like calcifications w/ Liesegang (lamellar) rings w/ amyloid-like globular deposits.
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Calcifying Epithelial Odontogenic Tumor (CEOT)
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aggressive, infiltrative, expansile, multilocular/honeycomb RL with trabeculae at 90 deg to cortical surface. No site preference. Histo: myxoid. Tx: resection w/ long term F/U, HIGH recurrence.
*Diff dx multilocular: amelo, OKC, CGCG, central hemangioma. |
Odontogenic Myxoma
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rare, Max = ant to 1st molars, Mand = posterior to 1st molars. Non-specific RL. Histo: fibrous CT, +/- odontogenic epithelium.
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Central Odontogenic Fibroma
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aka odontogenic epithelial hamartoma. Attached gingiva. Histo: same as Central Odontogenic Fibroma
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Peripheral Odontogenic Fibroma
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rare cementum producing neoplasm w/ inherent growth potential, attached to root of tooth esp. post mandible, teens – early 20’s à RADIOPAQUE mass of a VITAL tooth surrounded by a RL RING. Tx: REMOVAL of affected teeth and bone, will continue growing if not removed!
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Cementoblastoma
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very benign hamartoma of the anterior jaws esp. maxilla commonly associated w/ impacted tooth (max canine)
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Adenomatoid Odontogenic Tumor (AOT):
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Histo: islands of bland squamous epithelium.
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Squamous Odontogenic Tumor
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aka Pinborg tumor
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Calcifying Epithelial Odontogenic Tumor (CEOT)
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Ameloblastoma, AOT, SOT, CEOT are all:
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odontogenic benign epithelial tumors
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Ameloblastoma variant: less aggressive, long-term follow up (20+ yrs)
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Cystic Ameloblastoma
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aka odontogenic epithelial hamartoma
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Peripheral Odontogenic Fibroma
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very benign hamartoma of the anterior jaws esp. maxilla commonly associated w/ impacted tooth (max canine) à well circumscribed RL extending beyond CEJ (dentigerous cyst à CEJ) with occasional internal calcifications. Histo: CT capsule w/ duct-like spaces (glandular) in a nodular pattern, +/- Ca. Tx: conservative enuc. +/- preservation of any asociated impacted tooth.
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Adenomatoid Odontogenic Tumor (AOT
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Histo: Columnar odontogenic epithelium, basal cell nuclei = palisaded w/ reverse polarization, surrounding reminiscent “stellate reticulum.”
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Ameloblastoma
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Cementoblastoma is located on vital or non-vital teeth?
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VITAL teeth
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hamartoma à dense RADIOPACITY +/- impacted tooth w/ RL capsule
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Odontoma
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Resembles tooth (ant maxilla) Histo: ORGANIZED enamel, dentin, pulpal elements.
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Compound Odontoma
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HAPHAZARD aggangement (post jaws) Histo: haphazard elements.
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Complex Odontoma
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NON-aggressive ameloblastic-like tumor affecting the mandibular molar-ramus area of children and young adults. Tx: conservative excision/curettage.
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Ameloblastic Fibroma
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identical to Ameloblastic Fibroma but w/ HARD TISSUE IDUCTION = odontoma like radiopacities
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Ameloblstic Fibro-odontoma
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Mixed odontogenic tumors:
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Odontoma, Ameloblastic Fibroma(odontoma).
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1. Primary intraosseous carcinoma
2. Ameloblastic carcinoma/malignant ameloblastoma 3. Ameloblastic fibrosarcoma 4. Clear cell odontogenic carcinoma |
Malignant Odontogenic Tumors
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Radiolucent Pericoronal unilocular (radiographs):
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Pericoronal unilocular: most are odontogenic
1. hyperplastic dental follicle (<4mm) 2. Dentigerous cyst (>4mm) 3. OKC 4. AOT (teens, esp max canine) 5. less common a. calcifying odontogenic cyst b. ameloblastoma c. ameloblastic fibroma |
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Radiolucent PA unilocular (radiographs):
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Periapical unilocular: most are infectious
1. periapical granuloma (non-vital) 2. periapical cyst (non-vital) 3. cemental dysplasia (esp mand incisors black females) 4. periapical scar |
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Odontogenic myxoma, Central and Peripheral odontogenic fibroma, Cementoblastoma = epithelial or mesenchymal?
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odontogenic benign mesenchymal tumors
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Clinical: Very rare, mandible>maxilla, paresthesia, +/- swelling, unexplained tooth mobility.
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Malignant Odontogenic Tumors
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Radiographic: RL, ill-defined irregular margins
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Malignant Odontogenic Tumors
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Cementoblastoma will continue to grow if not removed? TRUE/FALSE?
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TRUE: removal of affected teeth and bone
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Odontoma, Ameloblastic Fibroma(odontoma) are:
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Mixed odontogenic tumors
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Radiolucent other unilocular lesion locations (radiographs)
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Unilocular other locations:
developing tooth bud radicular cyst (non-vital, lateral to root) nasopalatine duct cyst lateral periodontal cyst residual cyst (edentulous) OKC (small lesion) CGCG (ant mand) Stafne (static) bone defect (post mand below IAN) ameloblastoma (esp cystic variant) BFOLs (focal cementoosseous dysplasia, ossifying fibroma) |
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Radiolucent multilocular lesions (radiographs)
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Multilocular:
M = multilocular cyst A = ameloblastoma (ameloblastic fibroma – young pt) C = CGCG R = rare odontogenic tumors O = OKC M = myxoma (odontogenic) A = aneurysmal bone cyst C = cherubism |
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Mixed Radiolucent/Radiopaque lesions (radiographs)
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Odontoma
BFOL (eg PCD, COD, ossifying fibroma) calcifying odontogenic cyst ameloblastic fibro-odontoma CEOT cementoblastoma |