Extrathyroidal spread - case 1484 (ultrasonographic picture 5)

Left lobe, longitudinal scan. There is a large and a smaller hypoechogenic lesion. The former presents lobulated and blurred margins. The most probable diagnoses which should be involved into the differential diagnostics in such ultrasound presentation are papillary carcinoma and de Quervain's thyroiditis. Naturally, in almost all cases of the latter, patients have specific clinical and laboratory presentations, which were lacking in this case. There is a tiny echonormal tissue between the ventral part of the lobe and the nodule.