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

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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

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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

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4
Q

Ewing sarcoma

A

males under 15
Aggressive
surface of cortical bone
XR: onion skin

t(11;22)

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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

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