Bone Tumors/Disease (BRS Path)

Question 1

Most common benign primary bone tumor?

Answer 1

Osteochondroma

Question 2

Most common malignant primary bone tumor?

Answer 2

Osteosarcoma

Question 3

Osteochondroma- description?

Answer 3

Cartilage-capped subperiosteal bony projection from bone surface

Question 4

Osteochondroma- most frequent location?

Answer 4

Lower end of the femur & upper end of tibia

Question 5

Osteochondroma - common incidence?

Answer 5

Males under age 25

Question 6

Giant cell tumor - description?

Answer 6

Tumor characterized by multinucleate giant cells & fibrous stroma

Question 7

Giant cell tumor- location?

Answer 7

Epiphyses of long bones, especially @ lower end of the femur & upper end of the tibia

Question 8

Giant cell tumor - common incidence?

Answer 8

Females age 20-40

Question 9

Enchondroma - description?

Answer 9

Intramedullary cartilaginous neoplasm

Question 10

Enchondroma - most frequent location?

Answer 10

Bones of the hands & feet

Question 11

Enchondroma - common incidence?

Answer 11

No special age or sex incidence

Question 12

Osteoma - description?

Answer 12

Tumor of dense mature bone

Question 13

Osteoma - most frequent location?

Answer 13

Skull or facial bones; often protrudes into a paranasal sinus

Question 14

Osteoma - common incidence?

Answer 14

Males of any age

Question 15

Osteoid osteoma - description?

Answer 15

Neoplastic proliferation of osteoid & fibrous tissue

Question 16

Osteoid osteoma - most frequent location?

Answer 16

Near the end of the diaphysis of the femur or tibia

Question 17

Osteoid osteoma - common incidence?

Answer 17

Males under age 25

Question 18

Osteoblastoma - most frequent location?

Answer 18

w/in vertebrae

Question 19

Osteosarcoma - description?

Answer 19

Osteoid formation is usually evident & is most obvious in the osteoblastic variant; may also produce cartilage (chondroblastic osteosarcoma), prominent fibrous background (fibroblastic osteosarcoma)

Question 20

Osteosarcoma - most frequent location?

Answer 20

Tibia & femur near the knee

Question 21

Osteosarcoma - incidence?

Answer 21

Males age 10-20

Question 22

Chondrosarcoma - description?

Answer 22

Cartilaginous tumor

Question 23

Chondrosarcoma - most frequent location?

Answer 23

Pelvic bones, proximal & distal femur, proximal tibia, ribs, vertebrae

Question 24

Chondrosarcoma - common incidence?

Answer 24

Males age 30-60

Question 25

Ewing sarcoma - description?

Answer 25

Undifferentiated “small blue cell” tumor

Question 26

Ewing sarcoma - most frequent location?

Answer 26

Long bones, pelvis, scapulae, & ribs

Question 27

Ewing sarcoma - common incidence?

Answer 27

Males under age 15