Case Reports Cytopathology 2018 Exercise 3: Challenges and Pitfalls in Diagnosing Epithelioid Angiosarcoma of the Thyroid on Fine-Needle Aspiration (CSCY1803)

Zhongbo Yang, MD
Cytopathology Fellow

Jaylou Velez-Torres, MD
Cytopathology Fellow

Darcy Kerr, MD
Assistant Professor

Department of Pathology and Laboratory Medicine University of Miami Hospital/Jackson Health System Miami, Florida

Primary Audience: Pathologists and Clinical Scientists

Secondary Audience: Residents, Laboratory Technologist/Scientist (Includes all sub-specialty areas), Students, Pathologist Assistants,  Laboratory Directors and Educators

Upon completion of this activity, you will be able to:

• recognize the clinical symptoms, radiologic presentations, and clinical significance of epithelioid angiosarcoma of the thyroid;
• identify cytologic and histologic features of epithelioid angiosarcoma of the thyroid on cytology samples and surgical specimens;
• choose appropriate ancillary tests, including immunocytochemical studies, to differentiate epithelioid angiosarcoma from mimickers in the thyroid, especially anaplastic carcinoma of the thyroid; and
• be aware of this rare entity when interpreting fine-needle aspirates and frozen sections of the thyroid.