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KMID : 0613320030090020162
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Journal of the Korean Bone and Joint Tumor Soceity
2003 Volume.9 No. 2 p.162 ~ p.168
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Skeletal Sarcomas Examined with MR in Tubular and CT in Flat Bones
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Moon Tae-Yong
Lee Young-Joon
Jung Kyung-Hwa
Hur Jin-Do
Sol Mi-Young
Kwon Woon-Jung
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Abstract
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Purpose: Primary malignant bone tumors are classified with mesenchymal sarcomas (MS) such as osteosarcoma and chondrosarcoma and small round cell sarcomas (SRS) such as Ewing’s sarcoma and lymphoma. Radiological examinations for skeletal sarcoma were using MR scan in tubular bone sarcomas and CT scan in flat bone sarcomas recently. Both MR and CT scans show some findings of bone destruction and soft tissue mass but MR scans don’t reveal a finding with mineralization relatively. So we investigated bone destructive pattern of skeletal sarcomas on both MR and CT scans for differentiation of MS and SRS.
Materials and Methods: There are 28 MS and 26 SRS examined with MR or CT scans. The findings according to bone destructive pattern were divided to eccentric and concentric in 26 cases of tubular bone sarcomas with MR scan and 28 cases of flat bone sarcomas with CT scan.
Results: MR images revealed eccentric destruction in 12 cases of 16 MS and concentric in all cases of 10 SRS (p>.01). CT images showed eccentric destruction in 10 cases of 12 MS and concentric bone destruction in 13 cases of 16 SRS (p>.01)
Conclusion: The findings divided to eccentric and concentric bone destructive patterns were useful for differential diagnosis of MS from SRS on both MR and CT scans.
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KEYWORD
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Skeletal Sarcomas, MR scan, CT scan
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