Bone Tumors

Question 1

Most common benign tumor of bone?

Answer 1

Osteochondroma

Question 2

Most common tumor of bone?

Answer 2

Mets

Question 3

Most common primary tumor of bone?

Answer 3

Multiple myeloma

Question 4

Most common nonhematopoietic primary tumor of bone?

Answer 4

Osteosarcoma

Question 5

Arises on surface of facial bones?

Answer 5

Osteoma

Question 6

Presents with FAP + fibromatosis of retroperitonem + osteomas?

Answer 6

Gardner syndrome

Question 7

Bone pain that resolves with aspirin?

Answer 7

Osteoid osteoma

Question 8

Bone pain that does not resolve with aspirin?

Answer 8

Osteoblastoma

Question 9

Difference in size bt osteoid osteoma and osteoblastoma?

Answer 9

Osteoid osteoma 2cm

Question 10

Tumor of bone with an overlying cartilage cap?

Answer 10

Osteochondroma

Question 11

Arises as a lateral projection from metaphysis?

Answer 11

Osteochondroma

Question 12

Can transform into chondrosarcoma?

Answer 12

Osteochondroma

Question 13

Assoc with familial Rb in children and Paget’s in elderly?

Answer 13

Osteosarcoma

Question 14

Site of osteosarcoma?

Answer 14

Distal femur/proximal tibia at metaphysis

Question 15

Codman’s triangle?

Answer 15

Osteosarcoma

Question 16

Multinucleated giant cells and stromal cells?

Answer 16

Giant cell tumor (osteoclastoma)

Question 17

Only tumor that arises from epiphysis?

Answer 17

Giant cell tumor

Question 18

Soap-bubble appearance on x-ray?

Answer 18

Giant cell tumor

Question 19

Tumor derived from neuroectoderm?

Answer 19

Ewing’s

Question 20

X-ray appearance of Ewing’s?

Answer 20

Onion-skin

Question 21

S/S of Ewing’s?

Answer 21

Presents with mets, swelling of bone and fever (can be confused for osteomyelitis or lymphoma)

Question 22

Translocation of Ewing’s?

Answer 22

t(11;22)

Question 23

Benign tumor of cartilage?

Answer 23

Enchondroma

Question 24

Malignant tumor of cartilage?

Answer 24

Chondrosarcoma

Question 25

Arises in medulla of small bones of hands/feet?

Answer 25

Enchondroma

Question 26

Expansile glistening mass within medullary cavity?

Answer 26

Chondrosarcoma

Question 27

Punched-out lesions?

Answer 27

Mets

Question 28

Type of lesions seen in prostatic carcinoma?

Answer 28

Osteoblastic

Question 29

Epiphysis?

Answer 29

Giant cell tumor

Question 30

Metaphysis?

Answer 30

Osteochondroma, osteosarcoma

Question 31

Diaphysis?

Answer 31

Osteoid osteoma, Ewing's

Question 32

Intramedullary?

Answer 32

Enchondroma, chondrosarcoma

Question 33

Sunburst pattern on x-ray?

Answer 33

Osteosarcoma (codman's triangle)

Question 34

Arises within cortex of long bones (femur)?

Answer 34

Osteoid osteoma

Question 35

Where does osteoblastoma arise?

Answer 35

Vertebra