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10 Cards in this Set
- Front
- Back
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Simple Bone Cyst (hemorrhagic bone cyst, idiopathic bone cavity)
Radiographic appearance? |
* Well-circumscribed radiolucent area
* From 1-10 cm in diameter * May scallop up between roots, a highly suggestive but not diagnostic feature * Teeth generally vital, without root resorption * Rarely, may be multilocular, with expansion |
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Aneurysmal bone cyst
Radiographic appearance? |
* Unilocular or multilocular
* May be well-defined or diffuse * Significant cortical thinning and displacement |
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Focal osteoporotic marrow defect
Radiographic appearance? |
* RL or with fine trabeculation
* May appear well- or poorly-defined |
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Paget disease of bone (Osteitis Deformans)
Radiographic appearance? |
* Early on, see decreased radiopacity
* Altered trabecular pattern * In skull, may see large, circumscribed, radiolucent areas * Later, get patchy sclerosis, or "cotton wool" appearance * Teeth may show hypercementosis * must rule out cemento-osseous dysplasia |
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Central Giant Cell Granuloma
Radiographic appearance? |
* Well-demarcated, non-corticated RL lesions
* Unilocular (most cases) or multilocular * Can cause expansion or perforation of cortical plate |
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Cemento-osseous dysplasia
(Focal) Radiographic appearance? |
*Most are mixed RL/RO with a thin RL rim
* Usually well-defined, but with irregular borders |
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Cemento-osseous dysplasia
(Periapical) Radiographic appearance? |
* Usually multiple foci
* May appear as periapical RLs * With time, multiple lesions fuse * Serial radiographs show progressive opacification * Final result is opaque mass surrounded by a thin RL rim * Periodontal ligament is intact * Does not expand cortex |
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Cemento-osseous dysplasia
(Florid) Radiographic appearance? |
* Multifocal, often symmetrical
* Same maturation pattern as the other types * May present with sequestra |
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Cementoblastoma
Radiographic appearance? |
* Radiopaque mass fused to one or more roots, thin radiolucent line surrounding mass
* PDL may be hard to see * May see root resorption |
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Osteosarcoma
Radiographic appearance? |
* RL, RO, or mixed
* Margins are poorly defined * "Sun-ray" appearance: bony trabeculae radiating from periphery of periosteum. Present in only 25% of cases and not unique to osteosarcoma * Early feature: localized symmetrical widening of PDL space (Garrington's sign) |
