Chondroblastoma

Question 1

Chondroblastoma description

Answer 1

YOUNG/ADULT (5-25 yo) Cartilaginous (aka codman’s tumor)

Question 2

Chondroblastoma pain?

Answer 2

Pain (mild/dull), joint referral, path fx rare

Question 3

Chondroblastoma location

Answer 3

“Epiphysis/apophysis” 50% at knee, also fem, tib, hum, tarsals, pelvis

Question 4

Chondroblastoma plain film

Answer 4

Calcification in 50%; usually seen before epiphyseal closure, lytic, soap bubble

Question 5

Chondroblastoma ddx

Answer 5

Giant cell tumor (seen after); larger, no sclerotic border or calcification

Question 6

Chondroblastoma malignant/refer

Answer 6

YES

cannot ddx from clear cell chondrosarcoma