Figure 2

A 39-year-old woman with papillary thyroid microcarcinoma. (a) A solid, hypoechogenic, regular, well-defined and taller-than-wide nodule (arrows) without capsule contact is shown on US and no calcification is found in the nodule. (b) No blood flow is shown on color Doppler US. (c) Pathological examination confirms the diagnosis of papillary thyroid microcarcinoma and Hashimoto’s thyroiditis. (haematoxylin-eosin stain; original magnification, ×40). (d) The amplification plot of BRAF shows BRAF wild type. The purple curve, representative of the BRAF sample, overlaps the horizontal light blue reference line which suggests BRAF-negative.