Figure 2

Neck ultrasonography images obtained about 21 months previously, demonstrating a solid cervical mass of 14 × 16 × 27 mm, with intra-lesional vascularization, under the right thyroid lobe. After fine-needle aspiration biopsy (FNAB), parathyroid hormone (PTH) evaluation on fine-needle washing was 550 pg/mL; this value was higher than our institutional standard cut-off value of 132 pg/mL [30].