Flashcards in Bone Tumors- Handorff Deck (65)
What are the four pieces of information you need when attempting to identify a bone lesion/tumor?
Age and sex of pt, location of lesion, radiographic appearance of lesion
Malignant tumor of the skull or lumbar vertebrae
Benign tumor of the spinal cord=
Malignant bone lesion of the shoulder=
malignant lesion of the pelvis=
Malignant lesion of the head of the femur or radius=
Giant cell tumor...and most are actually benign
Also look at the diagram for non-malignants
Malignant bone tumors occuring in the metaphysis are?
Osteosarcoma and juxtacortical osteosarcoma
Malignant tumors occuring in the diaphysis include
Ewing's Sarcoma and chondrosarcoma
Bnign tumors occuring at the epiphysis include...
Chondroblastoma and Giant cell Tumor
Benign tumors in the diaphysis include
Enchondroma and fibrous dysplasia
What is the issue in fibrous dysplasia?
All components of the bone are present but do not mature
What are the 3 distinctive patterns of bone involvement?
monostotic, polyostotic, McCune Albright SYndrome
What is monostotic fibrous dysplasia
characterized by single bone involvement
What is polyostotic fibrous dysplasi
characterized by multiple bones being involved
McCune Albright Syndrome
Polyostotic, Cafe-Au Lait skin pigmentation, Endocrinopathies
Polyostotic fibrous dysplasi may transform to?
x-ray appearance of a fibrous cortical defect?
scooped out with borders that are scalloped and sclerotic/ denser than the bone which surrounds them
Is a fibrous cortical defect common or uncommon
COMMON. over 50% of kids over 2
Most common site of fibrous cortical defect
Metaphysis of femur and proximal tibia
Approximately half of these are bilateral or multiple
If you see that the fibrous cortical defect is over 5-6 cm, what do you suspect?
Fibrous cortical defects ususally resolve.....
Definition of fibrous cortical defect
eccentric, sharply delineated, metaphyseal lesion in long bones of adolescents...Also known as benign fibrous histiocytom is mass forming
Fibrous cortical defect age group
Symptoms of FCD
Solitary bone cysts are benign fluid-filled cysts
2/3 of solitary bone cysts occur where?
in the humerus or femur
Solitary bone cysts are usually asymptomatic
Very bloody cystic lesion=
aneurysmal bone cyst