Ewing's sarcoma x ray: Difference between revisions
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*Periosteal reaction usually is present, and it often has an '''onionskin or sunburst pattern''', which indicates an aggressive process. | *Periosteal reaction usually is present, and it often has an '''onionskin or sunburst pattern''', which indicates an aggressive process. | ||
*[[Codman triangle]] may be present at the margins of the lesion. These result from the elevation of the [[periosteum]] and central destruction of the [[periosteal reaction]] caused by the tumor. | *[[Codman triangle]] may be present at the margins of the lesion. These result from the elevation of the [[periosteum]] and central destruction of the [[periosteal reaction]] caused by the tumor. | ||
*Aggressive periosteal reaction characterized by: | |||
:*Sunburst appearance | |||
:*[[Codman triangle]] | |||
:*Lamellated (onion skin) reaction: less frequently seen | |||
*The wide zone of transition (e.g. permeative) is the most useful plain film characteristic in differentiation of benign versus aggressive or malignant lytic lesions.Soft *Tissue [[calcification]] is uncommon, seen in less than 10% of cases. | *The wide zone of transition (e.g. permeative) is the most useful plain film characteristic in differentiation of benign versus aggressive or malignant lytic lesions.Soft *Tissue [[calcification]] is uncommon, seen in less than 10% of cases. | ||
Revision as of 16:21, 7 October 2015
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Ewing's sarcoma Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Ewing's sarcoma x ray On the Web |
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American Roentgen Ray Society Images of Ewing's sarcoma x ray |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Suveenkrishna Pothuru, M.B,B.S. [2] Assistant Editor(s)-In-Chief: Michael Maddaleni, B.S.
Overview
X Ray
X ray add valuable information in the initial evaluation of Ewing sarcoma.The appearance of these tumors is very variable, but usually have aggressive appearance. Common findings include:
- Permeative lytic lesion in the metaphysis and diaphysis of the bone with a prominent soft tissue mass extending from the bone.
- Periosteal reaction usually is present, and it often has an onionskin or sunburst pattern, which indicates an aggressive process.
- Codman triangle may be present at the margins of the lesion. These result from the elevation of the periosteum and central destruction of the periosteal reaction caused by the tumor.
- Aggressive periosteal reaction characterized by:
- Sunburst appearance
- Codman triangle
- Lamellated (onion skin) reaction: less frequently seen
- The wide zone of transition (e.g. permeative) is the most useful plain film characteristic in differentiation of benign versus aggressive or malignant lytic lesions.Soft *Tissue calcification is uncommon, seen in less than 10% of cases.
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X-Ray of a child with Ewing's sarcoma of the tibia -
Radiograph demonstrates classic sunburst pattern of periosteal reaction.
Chest X Ray
X ray chest may be done to see if the cancer has spread to lungs.