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Follicular Variant of Papillary Thyroid Carcinoma

  • Arne Heilo
  • Eva Sigstad
  • Krystyna Grøholt
Chapter

Abstract

Morphologically,follicular variant of papillary thyroid carcinoma (FVPTC) may appear partially or completely encapsulated and can be misdiagnosed as follicular adenoma or follicular carcinoma pathologically and on (ultrasound) examination. They can be hyper-, iso-, hypoechoic, or mixed with an uneven hypoechoic capsule that is hypervascular with a “spoke-and-wheellike” appearance. Some have sharply marginated areas of different echogenicity within the tumor, a feature we introduce as geographic echo pattern (see page 9). If microcalcifications are found inside the tumor, FVPTC is more likely the diagnosis.These encapsulated FVPTC are often solitary. If they are not encapsulated, they often look like an ordinary PTC both pathologically and on US examination [17].

Keywords

Papillary Thyroid Carcinoma Follicular Carcinoma Autoimmune Thyroiditis Nodular Goiter Follicular Adenoma 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+ Business Media, LLC  2010

Authors and Affiliations

  1. 1.Department of RadiologyOslo University Hospital Section The Norwegian Radium HospitalOsloNorway
  2. 2.Department of PathologyOslo University Hospital Section The Norwegian Radium HospitalOsloNorway

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