Ewing's sarcoma other imaging findings: Difference between revisions

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Revision as of 20:04, 7 September 2012

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Assistant Editor(s)-In-Chief: Michael Maddaleni, B.S.

Overview

Plain film

Plain films add valuable information in the initial evaluation or screening. 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.

Scintigraphy

Bone scintigraphy can also be used to follow tumor response to therapy.

References

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 ==Overview==
-===Radiograph===
-On conventional [[radiography|radiographs]], the most common osseous presentation is a permeative lytic lesion with [[periosteum|periosteal]] reaction. The classic description of lamellated or "onion skin" type [[periosteal reaction]] is often associated with this lesion.
-There have been several different types of periosteal reactions observed<ref name="pmid17272319">{{cite journal |author=Iwamoto Y |title=Diagnosis and treatment of Ewing's sarcoma |journal=[[Japanese Journal of Clinical Oncology]] |volume=37 |issue=2 |pages=79–89 |year=2007 |month=February |pmid=17272319 |doi=10.1093/jjco/hyl142 |url=http://jjco.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=17272319 |accessdate=2011-12-09}}</ref>
-*An 'onion-peel' appearance refers to a multi-layered reaction
-*A perpendicular reaction is referred to as a 'spiculae' or 'sunburst'. The sunburst is less common in Ewing's sarcoma patients. It is more common to see the onion peel appearance.
-*A triangular lifting from the bone at the site of detachment is referred to as 'Codman's triangle'
 ===Plain film===