Patient cohort baseline
PTMC
RECRUITMENT
In this study, we obtained the medical records of patients with low-risk intrathyroidal PTMC from the Second Affiliated Hospital Zhejiang University School of Medicine. There were 208 patients meeting the above inclusion criteria and were all pathologically diagnosed with PTMC by fine-needle aspiration samples and underwent RFA. There were 32 patients without a proper follow-up ultrasound examination or enough clinical information were excluded. A total of 176 patients finally included in this study were randomly divided into training and test groups at a ratio of 7:3. The participants selection process is depicted in Fig. Flowchart of the patient recruitment pathway. RFA, radiofrequency ablation; CEUS, contrast-enhanced ultrasonography.Baseline characteristics of patients with low-risk intrathyroidal PTMC from The Second Affiliated Hospital Zhejiang University School of Medicine.