Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
Hurthle cells
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Hurthle cells

From the ultra sound, I understand that I have a multinodular goitre - but only 2 nodules?  - a major one on the left side and a minor one on the right side. From my first FNA on the major nodule, I have been given the diagnosis of Hurthle cell lesion of undetermined significance (THY3a) from a multinodular goitre but within the presence of abundant colloid. I am waiting now for the second FNA results from both nodules. Does the first FNA indicate a benign setting or is it highly likely to be a malignant nodule? Does this mean the second FNA was to determine whether there metastisis into the right side? If the second FNA report is the same i.e Thy3a, does this anyway mean inevitable surgery and total thyroidectomy?
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"Thy3a" must be a code specific to that pathology lab -- not a universal category.  Repeating the FNA is reasonable ,but prior to making surgical decisions would have the slides sent to an expert to confirm category of "hurthle cell lseion of undetermined significance" as many of these are readily diagnosed as benign by expert thyroid cytopathologists.  
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