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Surgpath
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bone
bone
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Normal
cartilage
periosteum
cortical bone
trabecular bone
marrow
location: epiphysis (articular end), metaphysis, diaphysis (shaft)
cells: osteocytes, osteoblasts, osteoclasts
Ddx by location
Diaphysis
fibrosarcoma
small round cells
Ewing sarcoma
lymphoma
plasma cell neoplasm
adamantinoma
osteoid osteoma
chondromyxoid fibroma
fibrous dysplasia
fibrous cortical defect
bone cyst
Metaphysis
osteosarcoma
parosteal osteosarcoma
osteoblastic osteosarcoma
chondroblastic osteosarcoma
malignant fibrous histiocytoma
chondroma
enchondroma
osteochondroma
aneurysmal bone cyst
Epiphysis
chondroblastoma
giant cell tumor
Joint
osteoarthritis
rheumatoid arthritis
gout
pseudogout
synovial chondromatosis
pigmented villonodular synovitis
WHO neoplasms
Cartilage
osteochondroma
chondroma
enchondroma
periosteal chondroma
multiple chondromatosis
chondroblastoma
chondromyxoid fibroma
chondrosarcoma
Bone
enostosis
osteoid osteoma
osteoblastoma
osteosarcoma
chondroblastic osteosarcoma
fibroblastic osteosarcoma
osteoblastic osteosarcoma
nonconventional
telangiectatic osteosarcoma
small cell osteosarcoma
low grade central osteosarcoma
secondary osteosarcoma
parosteal osteosarcoma
periosteal osteosarcoma
high grade surface osteosarcoma
Misc tumors
PNET
adamantinoma
giant cell tumor
Soft tissue
PNET
Fibrogenic
desmoplastic fibroma
fibrosarcoma
fibrous cortical defect
ossifying fibroma
non-ossifying fibroma
fibrous dysplasia
Fibrohistiocytic
benign fibrous histiocytoma
MFH
vascular
hemangioma
angiosarcoma
smooth muscle
leiomyoma
leiomyosarcoma
fat
lipoma
liposarcoma
neurilemmoma
chordoma
Hematopoietic
plasma cell myeloma
lymphoma
Metastasis
Non-neoplastic
cysts
aneurysmal bone cyst
simple bone cyst
epidermal cyst
intraosseous ganglion
inflammation
osteomyelitis
langerhans cell histiocytosis
mastocytosis
Erdheim-Chester disease
Rosai Dorfman disease
joint disease
osteoarthritis
rheumatoid arthritis
avascular necrosis
slipped capital femoral epiphysis
Charcot joint
septic arthritis
Paget disease
osteonecrosis