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18 Cards in this Set
- Front
- Back
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Benign Fibro-Osseos Lesion definition |
Benign fibro-osseous lesion: non-neoplasm cellular fibrous tissue irregular woven trebecular - diverse biological behaviour with same microscopic appearance |
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BFOL- Types (3) |
1. Central Ossyfiying Fibroma 2. Fibrous Dysplasia 3. Cemento-Osseous Dysplasia 3.1. Periapical cemental dysplasia 3.2. Focal cemento-osseous dysplasia 3.3. Florid cemento-osseous dysplasia |
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1. Central Ossifying Fibroma |
A benign neoplasm (has intrinsic growth pattern; grows slowly unabated until removed), but NOT malignant |
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2. Fibrous Dysplasia (definition) |
- Normal bone replaced by a BFOL leads to slow expanding, painless swelling, often leading to facial asymmetry in the jaws - Fibro-osseous stuff is not good bone: not lined up well, just a mesh of bone + cellular fibrous CT - mutation of GNAS1 gene - early childhood mutation so not inherited |
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2. Fibrous Dysplasia Clinical |
asymmetry and when you feel it's bony hard
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2. Fibrous Dysplasia Radiological |
ground glass radiographic appearance (blending at borders with normal bone). No distinct, clear margin (if you see a clear delineation in radiograph, NOT fibrous dysplasia)
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2. Fibrous dysplasia Histological |
not well organized bone with cellular fibrous CT everywhere |
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2. Fibrous Dysplasia TX |
do nothing when growth stops Fibrous dysplasia stops too |
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2. Fibrous Dysplasia Differnet forms (4) |
2.1. Fibrous dysplasia Monostotic (single bone) M=F, children, Maxilla>Mandible 80% of all fibrous dysplasia 2.2. Fibrous dysplasia Polystototic >= 2 bones 2.3. Jaffe syndrome polystotic, cafe-au-lait spots on skin/mucosa 2.4. McCune-Albright syndrome polystotic, cafe, endocrinopathy (hyperthyro) |
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3. Cemento-osseous dysplasia definition |
most common BFOL that is always in the jaws Different Stages: 1. Osteolytic stage - removal of normal bone so radiolucency 2. Active stage - deposition of crappy bone - radiolucency with radiopacities everywhere 3. Mature Stage - radiopacities fuse = hard mass + radiolucent rim
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3. Cemento-osseous dysplasia Types (3) |
3.1. Periapical Cemento-osseous dysplasia 3.2. Focal Cemento-osseous dysplasia 3.3. Florid Cemento-osseous dysplasia |
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3.1. Periapical Cemento-osseous Dyplasia Clinicial fts |
- typically Middle aged, Black Females - anterior mandible near apex of teeth mimics PAG/RAD so check vitality - asymptomatic, multifocal lesions |
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3.1. Periapical Cemento-osseous Dysplasia Osteolytic stage teeth vital painless no jaw expansion Tx: NONE, self-limiting
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3.1. Periapical Cemento-osseous Dysplasia - Histological |
cellular fibrous CT irregular trebecular bone |
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3.2. Focal Cemento-osseous Dysplasia Clinical fts |
- middle aged females (may not be black) - not at anterior mandible, its at posterior mandible usually - painless and no expansion |
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3.3. Florid Cemento-osseous Dysplasia Clinial Fts |
- typically middle aged black females - multiple quadrants - osteolytic and active (developing) stages is asymptomatic but when mature and dense/hard it may get infected = painful (difficult to tx with Abk)
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3.3. Florid Cemento-osseous dysplasia Tx |
Observation Surgical removal of infected lesion |
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Meow |
