59-Year-old female patient with history of Hashimoto’s thyroiditis and small PTC in right thyroid lobe (arrow). The background thyroid parenchyma has a heterogenous echotexture which leads to loss of conspicuity of nodule margin and therefore limits accurate measurement of the nodule. PTCs in patients with thyroiditis and heterogenous background thyroid echogenicity should be assessed carefully to evaluate eligibility for AS