Author: Zahra Maleki, MD, FCAP, MIAC, Department of Pathology, The Johns Hopkins Hospital, Baltimore, Maryland, USA
Reviewer: Christopher van den Bussche, MD, MIAC, Dept. of Pathology, Johns Hopkins Hospital, Baltimore, MD, USA
A 53 year old woman with a history of lymphocytic thyroiditis was found to have a palpable mass on neck examination. Ultrasound imaging showed a 3.1 cm right thyroid lobe nodule that was heterogeneous with microcalcifications, irregular margins, and positive intranodular flow. Fine needle aspiration biopsy was performed.
Based on the cytomorphology of the thyroid nodule FNA what is the most likely diagnosis?