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Exostosis and spongiosum
Apical Periodontal Cyst
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Evidence of inflammation (granulation tissue, infiltrate)
- Apical Periodontal Cyst
- Residual Cyst
- Buccal Bifurcation Cyst
- Inflamed Dentigerous Cyst
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Small satellite cysts
Odontogenic Keratocyst
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Parakeratin surface
Odontogenic Keratocyst
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Orthokeratin surface
Orthokeratinized Odontogenic CystGingival Cyst of the Newborn
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Pallisaded basal cell layer
Odontogenic Keratocyst
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Keratohyaline granules
Orthokeratinized Odontogenic Cyst
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Thin lining, epithelial rests
Non-inflamed Dentigerous Cyst
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Thick lining, hyperplastic rete ridges
Inflamed Dentigerous Cyst
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Epithelial Plaques
- Lateral Periodontal Cyst
- Gingival Cyst of the Adult
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Keratin-filled Cyst
Gingival Cyst of the Newborn
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Ghost cells
Calcifying Odontogenic Cyst
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Microcysts and clusters of mucous cells
Glandular Odontogenic Cyst
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Islands of odontogenic epithelium
- Multicystic Ameloblastoma
- Ameloblastic Fibro-Odontoma
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Reverse polarity of nuclei
- Multicystic Ameloblastoma
- Unicystic Ameloblastoma
- Adenomatoid Odontogenic Tumor
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Duct-like epithelial structures
Adenomatoid Odontogenic Tumor
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Thick fibrous capsule
Adenomatoid Odontogenic Tumor
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Amyloid development
Calcifying Epithelial Odontogenic Tumor (Pindborg Tumor)
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Cords of odontogenic epithelium
- Ameloblastic Fibroma
- Ameloblastic Fibro-odontoma
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Glycosaminoglycan ground substance
Odontogenic Myxoma
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Multi-nucleated giant cells
- Aneurysmal Bone Cyst
- Central Giant Cell Granuloma
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Normal bone marrow
Focal Osteoporotic Bone Marrow Defect
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Line by respiratory epithelium
Surgical Ciliated Cyst
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Dense lamellar bone with scant fibrofatty marrow
Idiopathic Osteosclerosis
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Proliferating mesenchymal cells, RBC extravasation
Central Giant Cell Granuloma
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Specules of bone and some cementum-like hard tissue
- Cement-Osseous Dysplasia
- Ossifying Fibroma
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Chinese script writing/curvilinear shapes
Fibrous Dysplasia
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"bad cells, bad bone"
Osteosarcoma
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Bence Jones protein in urine
Multiple Myeloma
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"punched out"
Multiple myeloma
-
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RL at site of extraction
Residual Cyst
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RL at buccal bifurcation
Buccal Bifurcation Cyst
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RL in periapical area of non-vital tooth
Apical Periodontal Cyst
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RL attaching to the tooth follicle at the CEJ
Dentigerous Cyst
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RL distal or buccal of partially erupted 3rd molar
Paradental Cyst
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RL lateral to the roots of vital teeth
Lateral Periodontal Cyst
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"honeycomb"
- Ameloblastoma (small)
- Odontogenic Myxoma (small)
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"soap bubble"
- Ameloblastoma (large)
- Odontogenic Myxoma (large)
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"snowflake" calcifications
Adenomatoid Odontogenic Tumor
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RL around impacted canine
Adenomatoid Odontogenic Tumor
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Liesegang ring calcifications
Calcifying Epithelial Odontogenic Tumor (Pindborg Tumor)
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Lesion has collection of tooth-like structures
Compound Odontoma
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Conglomeration of enamel and dentin
Complex Odontoma
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Scalloping between teeth
Simple/Traumatic Bone Cyst
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Wispy Septations create multilocular lesion
Central Giant Cell Granuloma
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Within mandibular canal
- Neurilemoma (Schwannoma)
- Traumatic Neuroma
- Neurofibroma
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Well-defined opacity, supernumerary teeth
Osteoma
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Radiopaque tumor fused to tooth roots
Cementoblastoma
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Phleboliths
- Central Hemangioma
- A-V Malformations
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"ground glass" opacification
Monostotic Fibrous Dysplasia
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Smoky, mottled, ground glass, orange peel, etc
Polyostotic Fibrous Dysplasia
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"moth eaten"
Metastatic Carcinoma
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Widening of the PDL
Osteosarcoma
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Elevation in bone height above CEJ
Osteosarcoma
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Anterior mandible
- Glandular Odontogenic Cyst
- Central Giant Cell Granuloma
- Periapical Cemento-Osseous Dysplasia (PCOD)
- Eruption Cyst
- Lateral Periodontal Cyst
- Gingival Cyst of the Adult
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Anterior maxilla
Compound Odontoma
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Canines
Adenomatoid Odontogenic Tumor
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Mandibular first molar
- Buccal Bifurcation Cyst
- Eruption Cyst
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3rd molars
- (unerupted or partially erupted)
- Dentigerous Cyst
- Paradental Cyst
- Orthokeratinized Odontogenic Cyst
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