This is a lobe of a thyroid gland from a patient with a small nodule.
The mass appears here as a slightly pale, clearly-demarcated mass with only a slightly infiltrating border. You can see it at the right of the first picture.
In the second picture, you can see a calcified sphere, or psammoma body, at the left. You can also appreciate that many of the nuclei have clear centers. Even with good papillations, we consider this a papillary carcinoma, and the prognosis to be most likely good.
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