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Bone & Joint MCs
| Question | Answer |
|---|---|
| MC area/position in bone to get tumor | Metaphysis |
| MC malignancy of skeleton | Mets |
| MC female cancer to mets to bone | Breast |
| MC male cancer to mets to bone | Prostate |
| MC childhood cancer to mets to bone | Neuroblastoma |
| MC bone lesion to spread to bone | Ewings -2nd=Osteosarc, 3rd=Chondrosarc |
| MC primary bone malignancy that results in fractures | Non-Hodgkin’s Lymphoma |
| MC pathway of tumor spread | Hematogenous |
| MC x-ray pattern of mets | Lytic (70%) |
| MC primary malignant bone tumor | Multiple myeloma |
| 2nd MC primary bone malignancy | Osteosarcoma |
| MC location of multiple myeloma | Vertebrae |
| MC location of central osteosarcoma | Knee |
| MC x-ray pattern of osteosarcoma | Sclerotic |
| MC area osteosarcoma mets to | Lungs |
| MC primary bone lesion in children | Osteosarcoma |
| 2nd MC primary bone tumor in kids | Ewings |
| MC type of chondrosarcoma | Central |
| MC location (2) of chondrosarcoma | Pelvis & Femur |
| MC primary malignancy of hand | Chondrosarcoma |
| MC bone (location) affected in Ewings | Femur |
| MC location for fibrosarcoma | fem/tib – KNEE! |
| MC malignancy to produce large ST mass | fibrosarcoma |
| MC soft tissue sarcomaof late adult life | Malig fibrous histocytoma |
| MC location for chordomas | Sacrococcygeal area (2-clivus, 3-verteb) |
| MC cervical spine level affected by chordoma | C2 |
| MC location for Non-Hodgkins Lymphoma | femur |
| MC location for Hodgkins Lymphoma | vertebral bodies |
| MC x-ray pattern for HL | Lytic |
| MC benign tumor of sacrum & patella | Giant Cell Tumor |
| MC location for Giant Cell Tumor | Knee |
| MC benign tumor of extremities | Osteochondroma |
| MC location of osteochondroma | Knee |
| MC benign tumor of spine | Hemangioma |
| MC type of hemangioma | Cavernous |
| MC location for hemangioma (2) | Spine (lower T, upper L) & Skull (frontal) |
| MC tumor of nose & sinuses | Osteoma |
| MC location for enostoma (bone island) | Ischium |
| MC location for osteoid osteomas | Femur & Tibia |
| MC benign tumor of hand | Enchondroma |
| MC finger to get enchondroma | Fifth (Fif!) |
| MC location for FCD/NOFs | Knee |
| MC location for Simple Bone Cyst | Humerus |
| MC type of ABC | Secondary (trauma or tumor) |
| 2nd MC location for ABS’s (2) | Tubular long bones (femur, tib)& Spine |
| MC benign bone tumor of clavicle | ABC |
| MC Paget’s stage found at patient presentation | 2 (mixed) |
| MC location for Paget’s | Pelvis (R>L) |
| MC cancer Paget’s degenerates to | Osteosarcoma |
| MC form of fibrous dysplasia | Monostotic |
| MC fibrous dysplasia monostotic location | Ribs |
| MC fibrous dysplasia polyostotic location | Femur |
| MC bony abnormality in Neurofibromatosis - Type 1 | Kyphoscoliosis |