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skeletal1
H skeletal 1
| Question | Answer |
|---|---|
| bone island AKA | enostoma |
| where are bone islands never located | skull |
| what type of tumor is enostoma | benign |
| may have brush borders | enostoma |
| small lesion with a nidus <1cm in size | osteoid osteoma |
| painful benign lesion | osteoid osteoma |
| what age does osteoid osteoma affect | < 25 |
| benign lesion rare outside the skull | osteoma |
| gardner's syndrome | osteoma |
| what is garder's triad | multiple osteomas, colonic polyps, soft tissue fibromas |
| m/c benign tumor of the spine | hemangioma |
| corduroy cloth appearance | hemangioma |
| spoked wheel appearance in skull | hemangioma |
| pseudohemangiomatous appearance | hemangioma |
| what type of tumor is hemangioma | benign |
| what type of tumor is osteoma | benign |
| non hereditary HME | osteochondromatosis |
| what causes bayonet deformity | HME |
| average number of lesions in HME | 10 |
| what type of tumor is HME | benign |
| cauliflower appearance | solitary osteochondroma |
| m/c benign tumor of skeleton | solitary osteochondroma |
| two types of osteochondroma | sessile and pedunculated |
| appearance of sessile | flat and broad |
| appearance of pedunculated | stalk |
| m/c area for solitary osteochondroma | metaphysis |
| lesion has cartilage cap | solitary osteochondroma |
| pain at night 65 % of the time | osteoid osteoma |
| may cause sclerotic pedicle | osteoid osteoma |
| m/c in neural arch of thoracolumbar spine | osteoblastoma |
| nidus which is > 1 cm | osteoblastoma |
| pain at night not relieved with aspirin | osteoblastoma |
| m/c benign tumor of hands and feet | solitary enchondroma |
| 50% of lesions have punctate calcifications | solitary enchondroma |
| ollier's disease | multiple enchondromas |
| multiple enchondromas with soft tissue hemangiomas | maffucci's syndrome |
| codman's tumor AKA | chondroblastoma |
| m/c patellar neoplasm | chondroblastoma |
| age range for chondroblastoma | 10-25 |
| rare tumor that occurs mostly in knee region | chondromyxoid fibroma |
| two types of fibrous xanthomas of bone | non-ossifying fibroma and fibrous cortical defect |
| m/c in long bones of lower extremities | fibrous xanthomas |
| appearance of NOF | geographic, soap bubbly lesion |
| fallen fragment sign | floating bone |
| fallen fragment sign appear in what condition | simple bone cyst |
| location for simple bone cysts | 50% proximal humerus and 25% in proximal femur |
| benign tumor that looks aggressive | aneurysmal bone cyst |
| expansile lesion | aneurysmal bone cyst |
| may have buttressing at their margins | aneurysmal bone cyst |
| blow out lesion | aneurysmal bone cyst |
| found in calcanus | simple bone cyst |
| m/c benign tumor of sacrum | giant cell tumor |
| lesion starts growing in metaphysis and extends to epiphysis | giant cell tumor |
| what percentage of giant cell tumors found in radius are malignant | 99 |
| raindrop skull | multiple myeloma |
| punched out lesions | multiple myeloma |
| m/c primary malgnant bone tumor | multiple myeloma |
| age range for multiple myeloma | 50 -70 |
| red marrow usually involved causing anemia | multiple myeloma |
| wrinkled vertebra | multiple myeloma |
| vertebra plana | multiple myeloma |
| prognosis for multiple mueloma | poor - most die within 3 years |
| solitary form of multiple myeloma | solitary plasmacytoma |
| hematogenous metastasis to lungs - canon ball metastasis | osteosarcoma |
| second m/c primary malignant tumor of bone | osteosarcoma |
| types of osteosarcoma | central, multicentric, parosteal, and secondary |
| whtat type of tumor is giant cell | quasimalignant |
| what % of osteosarcoma metastasize to bone | 75 |
| large soft tissue mass is associated with this type of tumor | osteosarcoma |
| m/c appearance of osteosarcoma | 50% sclerotic |
| m/c malignant bone tumor of hands, sternum and scapula | chondrosarcoma |
| has lucent broken ring | chondrosarcoma |
| groomed whisker appearance | ewings sarcoma |
| onion skin | ewings sarcoma |
| resembles acute osteomyelitis radiographicaly and clinicaly | ewings sarcoma |
| if appears as a primary tumor but unsure of type of lesion - think fibrosarcoma | lichtensteins rule |
| malignant form of fibrosarcoma | fibrous dysplasia |
| ivory vertebra with anterior skeleton | hodgkin's lymphoma |
| round cell tumor | hodgkins lymphoma |
| permeative agrresive lesion | non-hodgkins |
| AKA reticulum cell sarcoma | non-hodgkins lymphoma |
| non-hodgkins is most common location | knee |
| the only primary maligna t tumor that crosses joint or disc phase | chordomas |
| usually occurs in the sacrum 85% | chordoma |
| cafe au lati lesions | firbrous dysplasia and neurofibramatosis |
| which patholgy have lion faces | fibrous dysplasia and pagets |
| expansile lesions in maxillary bone | cherubism |
| cherubism | fibrous dysplasia |
| shepherds crook | fibrous dysplasia and pagets |
| focal gigantism | fibrous dysplasia |
| ground glass appearance | fibrous dysplasia |
| rind sign | fibrous dysplasia |
| m/c area for fibrous dysplasia | intertrochanteric region of femur |
| cotton wool skull | pagets |
| osteoporosis circumstricta | pagets |
| picture frame vertebra | pagets |
| blade of grass | pagets |
| saber shin | pagets |
| wheat of what | pagets |
| accentuation of femoral neck trabeculae | pagets |
| blind vertebra | lytic metastasis |
| m/c malignant tumor of skeleton | metastasis |
| m/c metastasis type | lytic |
| percentage of lytic metastasis | 75 |
| where does the lung metastasize to | hands and feet |
| usual route of metastisis | hematogenous |
| acral metastasis | metastasis to knees and elbows |
| arthritis of costovertebral joints | Tom Smith |
| widening of tear drop distance | waldenstrums sign |
| normal distance of tear drop | 2mm side to side and 8mm medially |
| m/c agent for septic arthritis | staph aureus |
| mainliners syndrome | pseudomonas infection |
| bony colar | involucrum |
| central necrotic bone | sequestrum |
| pseudomonas affects which joints | S joints - SI, spine, sternoclavicular, symphysis pubis |
| brodies abcess | osteomyelitis |
| resembles osteoid osteoma clinicaly and radiologicaly | osteomyelitis |
| latent period for osteomyelitis for extremities | 10 days |
| latent period for osteomyelitis for spine | 3 weeks |
| m/c area for osteomyelitis | femur |
| pus forming infection | suppurative osteomyelitis |
| granulomatous infection | non-suppurative osteomyelitis |
| bony erosions with soft tissue swelling | acute osteomyelitis |
| complication of squamus cell carcinoma | marjolin's ulcer |
Created by:
hakrrins
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