Bone tumors Flashcards
1
Q
Osteochondroma
A
Most common benign primary bone tumor
young males (under 25) with “chunk of bone” in a normal location - usually knee
type of hamartoma of bone
2
Q
Osteoclastoma
A
giant cell tumor of bone
-multinucleated giant cells resemble osteoclasts
young adults 20-40 yo
Soap bubble on XR
distal femur, proximal tibia most common sites
3
Q
Osteosarcoma
A
Most common malignant primary bone tumor
Rb gene mutation
teans 10-20, adults over 65
XR: cowman’s triangle, sunburst pattern
4
Q
Ewing sarcoma
A
males under 15
Aggressive
surface of cortical bone
XR: onion skin
t(11;22)
5
Q
Metastases to bone
A
"Permanently Relocated Tumors that like bone" Prostate - blastic RCC - lytic Testes Thyroid - lytic Lung - lytic or blastic Breast - lytic or blastic
Sx: bone pain, epidural spinal cord compression
hypercalcemia in lytic types
