age and locations

Question 0

multiple myeloma

Answer 0

50-80

axial skeleton

Question 1

metastatic bone disease

Answer 1

over 40

areas with red marrow

Question 2

solitary plasmacytoma

Answer 2

vertebra>pelvis>skull>sternum>ribs

Question 3

osteosarcoma

Answer 3

primary (10-25)
secondary (over 60)
distal femur, proximal tibia, proximal humerus

Question 4

chondrosarcoma

Answer 4

over 50
PELVIS
proximal humerus, neck of femur, ribs, sternum

Question 5

ewings sarcoma

Answer 5

10-25
long tubeular bones under 20
flat bones over 20
diaphyseal, metadiaphyseal

Question 6

giant cell tumor

Answer 6

20-40

85% in long bones

Question 7

solitary osteochondroma

Answer 7

under 20
metaphysis of long bones
flat bones

Question 8

hereditary multiple exostosis

Answer 8

2-10
metaphysis of long bones
flat bones

Question 9

simple/solitary/unicameral bone cyst (SBC)

Answer 9

3-14

60-70% proximal humerus and femur

Question 10

aneurysmal bone cyst (ABC)

Answer 10

10-30 (70%) below age 20
spine in 30% likes the post. elements
long bones - metaphysis
flat bones - pelvis

Question 11

osteoblasgtoma

Answer 11

10-20
spine (post. neural arch structures)
long bones
small bones of hand and feet

Question 12

osteoid osteoma

Answer 12

10-25
metaphysis and diaphysis of long bones
spine - post. elements of lower T and upper L
no bone exempt

Question 13

osteoma

Answer 13

adulthood
paranasal sinuses
inner/oouter table of calvarium
occasionally mandible or nasal bones

Question 14

enchondroma

Answer 14

10-30
small bones of wrist and hands
long bones
centra and meta/diaphyseal

Question 15

hemangioma

Answer 15

40-50
10-25
benign
lower T and upper L bodies
calvarium with tendency for frontal bone

Question 16

Chondroblastoma

Answer 16

8-59 but peak is around 5-25

epiphysis or apophysis in sub articular location like proximal femer

Question 17

fibrous cortical defect

Answer 17

2-10 with peak from 7-8

metaphyseal cortex of long bones of lower extremity

Question 18

non-ossifying fibroma

Answer 18

8-20 with peak during 20’s
long bones of the lower extremity
eccentric metadiaphyseal

Question 19

Paget’s disease

Answer 19

over 55, over 85
pelvic (MC)
polyostotic, asymmetric

Question 20

Fibrous dysplasia

Answer 20

10-20
monostotic
ribs, proximal femur, craniofacial bones
polyostotic unilateral asymmetric long bones