Pathology Flashcards
Osteochondroma
Bony outgrowth with cartilaginous cap, may result in local pain.
Osteochondroma Issues
1% chance of becoming metastatic, any increase in growth may require excision.
Enchondroma
Intra medullary cartilaginous tumour due to failure of enchondral ossification.
Enchondroma issues
Pathological fractures due to area of weakness- bone grafting is usual response.
Simple bone cyst
Single cavity benign fluid filled cyst, often incidental finding , usually on long bones.
Simple bone cyst issue
Pathological fractures due to weakening of the bone, bone grafting +/- stabilisation.
Aneurysmal Bone cyst
Lots of chambers filled with blood or serum, affects long and flat bones.
Aneurysmal Bone cyst issues
Locally aggressive causing cortical destruction and pain, pathological fractures
Aneurysmal Bone Cyst treatment
Bone grafts or cement
Giant Cell tumour
Tend to occur in epiphysis especially around the knee but can occur in other long bones pelvis and spine.
Giant cell tumour appearance
On Xray look for soap bubble apearance
Giant Cell Tumour issues
Locally destroying cortex, associated with pain and pathological fractures
Giant Cell risk
5% can metastasise to the lung, metastatic tumour is still considered benign.
Giant cell tumour treatment
Intralesional excision, phenol bone cement and liquid nitrogen used to remove tumour and prevent recurrence.
Fibrous Dysplasia
occurs in adolescence, lesions of fibrous tissue and immature bone.
Fibrous dysplasia in one bone
Monostotic
Fibrous dysplasia in several bones
Polyostotic
Fibrous dysplasia issues
Wider bones with thin cortices, angular deformities are common. All lead to pathological fractures.
Fibrous dysplasia treatment
Bisphosphonates to reduce pain
Internal fixation and bone grafts used to stabilise.
Fibrous dysplasia excision
Simple intralesional excision has a very high recurrence rate.
Osteoid osteoma
Is a small nidus of immature bone surrounded by sclerotic halo, occur in adolescence.