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Vascular and Capsular Pseudoinvasion in Thyroid Neoplasms
Ivan Chebib, MD*,
Elana Opher,
and
Mark E. Richardson
* To whom correspondence should be addressed. E-mail: ichebib{at}ucalgary.ca.
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Abstract |
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The diagnosis of follicular carcinoma of the thyroid requires the identification of capsular and/or vascular invasion, with the exception of distant metastases. However, several artifacts may mimic both vascular and capsular invasion. This article presents two cases of pseudo invasion in encapsulated follicular neoplasms. Their differentiation from true vascular and capsular invasion is discussed and the criteria for true invasion are reviewed.
First published on August 10, 2009 International Journal of Surgical Pathology 2009, doi:10.1177/1066896909342565

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