Zusammenfassung der Ressource
Bone Swellings
- Developmental lesions
- Torus palatinus
- Bony hard swelling in palate
- Often design denture around torus
- May have surgical reduction
to aid denture fit
- Mandibular torii
- Bony prominence in mandible
(from lingual aspect)
- Reactive lesions
- Reactive exostosis
- Cause = chronic trauma
- Treatment = eliminate cause
& remove surgically
- Very hard, may have ulceration
- Fibro-osseous lesions
- Pathologic term for group of
intra-osseous lesions
- Fibroblastic background with bone formation
(irregular trabeculae arrangement)
- Histopathology of all are indistinguishable
- Fibrous dysplasia
- Painless bone expansions
- Children
- Slow growth
- Usually stops when
child stops growing
- No tooth displacement
- No systemic abnormality
- Radiographically
- Lesion merges into normal bone
- Begins radiolucent -> ossifies
over time -> radiopaque
- Forms
- Monostotic (solitary)
- Multiple (cranio-facial)
- Polyostotic =
McCune-Albright syndrome
- Management
- Wait until growth
stops (18yrs)
- Jaw recontoured
(lesion not removed)
- Ossifying fibroma
- Cemento-osseous dysplasia
- Female, Asian/Black
- Radiographically
- Radiolucent -> ossify over time -> Radiopaque
- Usually mandible & above IAN canal
- Teeth vital
- Types
- Localised = periapical
- Generalised = florid
- Treatment = leave & monitor
- Cherubism
- Radiographically
- Bilateral, multilocular
radioluncencies
- Buccal expansion
- Facial deformity
- 'chubby face'
- Treatment
- Facial recontour when
stopped growing (18yrs)
- Exclude hyperparathyroidism
- Neoplasms
- Benign
- Ossifying fibroma
- Rare
- Slow growing
- Radiographically
- More defined outline
(circumscribed)
- Mixed radiopaque centre
with radiolucent outline
- Treatment = surgical
removal with small margin
- Osteoma
- Radiographically
- Well-circumscribed outline
- Radiopaque
- Histologically
- Cancellous
- Compact
- Clinical types
- Solitary
- Multiple
- Gardner syndrome
- Multiple odontomes
- Multiple intestinal polyps
- High malignant potential
- APC gene mutation
- Maxilla, mandible, sinuses
- Treatment = surgical removal
- Malignant
- 3) Marrow neoplasms
- Ewing's tumour = primary
bone marrow tumour
- Myeloma, lymphoma
- 1) Metastatic bone tumour
- Most common
- Neurological sign e.g. numb lip
- From e.g. breast, lung, prostate
- 4) Primary bone tumour
- Osteosarcoma
- Malignant osteoblasts
depositing malignant bone
- Central or juxtacortical
(most common)
- Radiograph
- Sun ray spicule on CT scan
- 8-15yrs or >50yrs
- Chrondosarcoma,
Mesenchymal chondrosarcoma
- 2) SCC (spread to bone)