RET and neoplasm: Moreover, patients with positive lymph node also had the larger tumor represented by the tumor diameter than those with negative lymph node ones (≥1 cm: 95.9% vs. 90.1%, p = 0.0396, Figure 4C), as well as the presence of RET genetic alteration (7.3% vs. 1.7%, p = 0.0208, Figure 4D).