Diagnosis of Small Papillary Thyroid Cancer Via Sensor-Navigated¹²⁴Iodine PET/Ultrasound (¹²⁴I-PET/US) Fusion

A euthyroid 42-year-old female (TSH, 3.9 mU/L; free T3, 4.51 pmol/L; free T4, 11.16 pmol/L) was referred for thyroid diagnostics due to hypothyreosis and a single thyroid nodule. On ultrasound (US), a small (15[ap] 6[rl] 8[cc] mm), inhomogeneous hypoechoic area (Figure 1, B and E) had been found on the lateral margin of the right thyroid lobe. Although ultrasonography suggested potential malignancy, a thyroid scan (Figure 1A, scintigram 20 min...