bone tumors

Question 1

osteoma is a tumor of what

Answer 1

bone

Question 2

osteomas most commonly occur

Answer 2

surface of facial bones

Question 3

osteomas are associated with what syndrome

Answer 3

gardner syndrome (FAP)

Question 4

osteoid osteomas are benign tumors of what

Answer 4

osteoblasts

Question 5

what part of bone do osteoid osteomas occur

Answer 5

cortex of long bones (femur)

Question 6

bone pain that resolves with aspirin

Answer 6

osteoid osteoma

Question 7

osteoblastomas occur in what bones

Answer 7

vertebrae

Question 8

bone pain that does not resolve with aspirin

Answer 8

osteoblastoma

Question 9

bony mass

Answer 9

osteoid osteoma

Question 10

bony mass > 2cm with a radiolucent core

Answer 10

osteoblastoma

Question 11

most common benign of tumor of bone

Answer 11

osteochondroma

Question 12

tumor of bone with an overlying cartilage cap

Answer 12

osteochondroma

Question 13

lateral projection of growth plate (metaphysis)

Answer 13

osteochondroma

Question 14

osteochondromas can rarely transform to what tumor

Answer 14

chondrosarcoma

Question 15

where do osteosarcomas occur

Answer 15

metaphysis of long bones

Question 16

incidence of osteosarcomas (age range and risk factors)

Answer 16

most prevalent = children (Rb gene)

elderly: pagets and radiation exposure

Question 17

sunburst on xray

Answer 17

osteosacroma

Question 18

codman triangle

Answer 18

osteosarcoma

Question 19

pleomorphic cells that produce osteoid

Answer 19

osteosarcoma

Question 20

osteosarcomas are malignant proliferation of what cells

Answer 20

osteoblasts

Question 21

multinucleated giant cells and stromal cells

Answer 21

giant cell tumor

Question 22

giant cell tumors occur in what part of the bone

Answer 22

epiphysis

Question 23

soup bubble appearance

Answer 23

giant cell tumor

Question 24

locations of giant cell tumors

Answer 24

distal femur / proximal tibia (knee)

Question 25

ewing sarcoma cells are derived from what origin

Answer 25

neuroectoderm

Question 26

what two tumors arise in diaphysis

Answer 26

ewing sarcoma

osteoid osteoma

Question 27

what part of bone does ewing sarcoma occur in

Answer 27

diaphysis

Question 28

small round blue cells

Answer 28

ewing sarcoma

Question 29

what bone tumors occur in males

Answer 29

osteochondroma

Question 30

what bone tumors occur boys

Answer 30

ewing sarcoma

Question 31

onion skin periosteal reaction on xray

Answer 31

ewing sarcoma

Question 32

what tranaslocation occurs in ewing sarcoma

Answer 32

11,22

Question 33

what fusion protein does the 11,22 translocatio make

Answer 33

EWS-FL I

Question 34

benign tumor arising in the medulla of the small hands and feet

Answer 34

chondroma

Question 35

where do chondrosarcomas occur

Answer 35

medulla of pelvis or central skeleton

Question 36

most metastatic tumors create what type of lsions

Answer 36

lytic punched out

Question 37

prostatic tumors create what lesions

Answer 37

osteoblastic