Chondroblastoma: MR characteristics with pathologic correlation.
OBJECTIVE
The purpose of this study was to describe the MR findings of chondroblastoma with pathologic correlation.


METHODS
In 22 patients with pathologically proven chondroblastoma, MR signal characteristics were correlated with pathological findings.


RESULTS
On T2-weighted images, 12 (55%) lesions were hyperintense with hypointense areas in 9 lesions, whereas 10 (45%) were hypointense. Therefore, 19 of 22 (86%) lesions with pathologic correlation had hypointense areas entirely (n = 10) or partly (n = 9) on T2-weighted images. On gadolinium-enhanced images, 13 (59%) lesions showed lobular enhancement and 9 (41%) showed marginal and septal enhancement. Low signal intensity on T2-weighted MR images was most strongly associated with an abundance of immature chondroid matrix, hypercellularity of the chondroblasts, calcifications, and hemosiderin on histology.


CONCLUSIONS
Chondroblastoma was found to show hypointense portions on T2-weighted images. Signal intensity on T1- and T2-weighted MR images in chondroblastoma was dependent on the amounts of histopathological components.
Jee
W H
WH
Department of Radiology, Catholic University of Korea, Kangnam St. Mary's Hospital, Seoul.
Park
Y K
YK
McCauley
T R
TR
Choi
K H
KH
Ryu
K N
KN
Suh
J S
JS
Suh
K J
KJ
Cho
J H
JH
Lee
J H
JH
Park
J M
JM
Lee
Y S
YS
Ok
I Y
IY
Kim
J M
JM
D000293:Adolescent; D000328:Adult; D001706:Biopsy; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000473:pathology; D001842:Bone and Bones / Q000473:pathology; D002804:Chondroblastoma / Q000175:diagnosis* / Q000473:pathology; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data; D008297:Male; D012189:Retrospective Studies
D003287:Contrast Media; D019786:Gadolinium DTPA