MR Imaging Findings of Chondroblastic Osteosarcoma
Journal of the Korean Radiological Society
;
: 341-345, 1999.
Article
in Korean
| WPRIM
| ID: wpr-42069
ABSTRACT
PURPOSE:
To evaluate the MR imaging findings of chondroblastic osteosarcoma. MATERIALS ANDMETHODS:
Weincluded 11patients (8 men, 3 women, mean age of 19 years) with pathologically proven chondroblastic osteosarcomaand, as a control group, 20 patients with conventional osteosarcoma. We obtained pre- and post-enhanced MR imagesof all patients and retrospectively reviewed the signal intensity and enhancement pattern of tumors. MR imageswere correlated with histopathology.RESULT:
In chondroblastic osteosarcomas, the major portion (< 75%) of thetumor showed low signal intensity on T1-weighted images and homogeneous high signal intensity on T2-weightedimages, but did not show enhancement. The margin of the area showed a lobular pattern. Enhanced nodules (n=11) andstrands (n=8) were seen in the nonenhanced portion. Histopathologically, the nonenhanced portion, nodules, andstrands revealed a chondroid matrix, hypercellular area, and fibrovascular septa, respectively. Conventionalosteosarcomas showed heterogeneous enhancement ; six showed a focal (<25%) nonenhanced area representing necrosis.CONCLUSION:
Chondroblastic osteosarcoma showed characteristic MR imaging findings.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Magnetic Resonance Imaging
/
Osteosarcoma
/
Retrospective Studies
/
Chondrocytes
/
Necrosis
Type of study:
Diagnostic study
/
Observational study
Limits:
Female
/
Humans
/
Male
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1999
Type:
Article
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