Abstract:Objective:To analyze the correlation between different traditional Chinese medicine syndrome types and the China Thyroid Imaging Reporting and Data System (C-TIRADS) classification in patients with thyroid nodules, thereby providing an objective reference for traditional Chinese medicine syndrome differentiation in these patients . Methods: A total of 320 patients who underwent thyroid ultrasound examination and were diagnosed with thyroid nodules at the First Affiliated Hospital of Gannan Medical University from January to December 2024 were enrolled. The gender distribution and the distribution of traditional Chinese medicine syndrome types and C-TIRADS classifications among the 320 patients with thyroid nodules were compared and analyzed. The correlation between different traditional Chinese medicine syndrome types and C-TIRADS classifications was statistically analyzed . Results:Among the 320 patients with thyroid nodules,there were 89 males( 27.8%) and 231 females( 72.2%).The distribution of traditional Chinese medicine syndrome types was as follows: liver depression and phlegm coagulation type in 126 cases (39.4%),yin deficiency and internal heat type in 82 cases (25.6%),phlegm blended with blood stasis type in 67 cases( 20.9%),and spleen and kidney yang deficiency type in 45 cases( 14.1%).The distribution of C-TIRADS classifications was as follows: grade two in 78 cases (24.4%), grade three in 142 cases (44.4%), grade four in 82 cases (25.6%),and grade five in 18 cases (5.6%).There was a statistically significant difference in the distribution of C-TIRADS classifications among different traditional Chinese medicine syndrome types (P<0.05). Further pairwise comparisons showed that the C-TIRADS classification in patients with yin deficiency and internal heat type was higher than that in patients with liver depression and phlegm coagulation type (P<0.05) and also higher than that in patients with phlegm blended with blood stasis type (P<0.05);no statistically significant differences were found in the distribution of C-TIRADS classifications among the other traditional Chinese medicine syndrome type groups (P> 0.05). There was a significant correlation between traditional Chinese medicine syndrome types and C-TIRADS classifications in patients with thyroid nodules (P<0.05).Conclusion:There are statistically significant differences in C-TIRADS classifications among patients with different traditional Chinese medicine syndrome types of thyroid nodules, and a significant correlation exists between traditional Chinese medicine syndrome types and C-TIRADS classifications.