1M - BONE SOFT TISSUE Flashcards
(30 cards)
Tumors in distal end of the bone
EPIPHYSIS
Chondroblastoma
GCT
Bone cyst
Tumors in bone’s growth plate
METAPHYSIS
*Osteoblast Ostoesarc Osteochondr Enchondr Chondrosarc *Fibrosarc SBC ABC
Tumors in the body of the bone
DIAPHYSIS
- Osteoid osteoma
- Adamantinoma
- Fibrous dysplasia
- Fibrosarcoma
Round cell lesions
• Ewing’s sarcoma
• Lymphoma
• Myeloma
0-20 y/o
SBC
EW
CB
10-20 y/o
NOF
OC
30-60 y/o
CS
My
Mets
Chor.
50-60 y/o
Mets
Chor.
Nature of lesion: bone is eaten up by the lesion
Lytic
Nature of lesion: bone formation
Sclerotic
Balloon type destruction seen in?
GCT
Chondromyxoid fibroma
Soft tissue involvement without destruction seen in?
Round cell tumors
Hematolymphoid tumors
Thickening of the edge of the lesion. There is bone formation delimiting the border of the lesion
Sclerotic margin
Epiphyseal lesion before growth plate fusion
Chondroblastoma
Epiphyseal lesion after growth plate fusion
Giant cell tumor
Common location of adamantinoma
Diaphysis of mandible
Primary bone tumors are often ___?
A. Solitary
B. Multiple
A. Solitary
Multiple bone lesions
o Enchondromas o Vascular lesion o Fibrous Dysplasia o Myeloma o Metastatic carcinoma
Growth pattern:
Well defined lesion
Geographic
Geographic pattern
BC
CMF
NOF
Growth pattern:
Both medullary and cortical bone: already expanding to the bone itself
Permeative
Permeative pattern
High grade malignant neoplasms
Osteomyelitis
Growth pattern:
Rapidly growing, aggressive, infiltrative
Moth-eaten
Moth-eaten pattern
Osteosarcoma
Blue round cell tumors (Ewing sarcoma)
Periosteal reaction:
Laying down of new bone by periosteum; cortex has increased in diameter
Cortical thickening
