Keywords
Papillary thyroid microcarcinoma
Detection rate
Ultrasonic features
Submitted : 2025-12-16
Accepted : 2025-12-31
Published : 2026-01-15
Abstract
Objective: To investigate the detection rate and sonographic characteristics of color Doppler ultrasound in the diagnosis of papillary thyroid microcarcinoma (PTMC). Methods: A retrospective analysis was conducted on 50 cases of PTMC confirmed by postoperative pathology from January 2020 to December 2024, all of which underwent preoperative color Doppler ultrasound examination. The detection rate was calculated, and the two-dimensional ultrasound characteristics and CDFI manifestations were analyzed. Results: Among the 50 cases of PTMC confirmed by pathology, the detection rate of color Doppler ultrasound was 88.00%, and the diagnostic accuracy rate was 96.00%. Two-dimensional ultrasound characteristics: The mean lesion size was (6.83 ± 1.51) mm; 42 cases (84.00%) had irregular shapes; 45 cases (90.00%) had unclear boundaries; 46 cases (92.00%) had hypoechoic lesions; 38 cases (76.00%) exhibited microcalcifications; and 40 cases (80.00%) had an aspect ratio ≥ 1. CDFI characteristics: The highest proportion was grade II, with 23 cases (46.00%); 39 cases (78.00%) had an RI ≥ 0.7, and the average RI value was (0.75 ± 0.06). Conclusion: Color Doppler ultrasound demonstrates a high detection rate for PTMC, with typical features including hypoechogenicity, irregular shape, microcalcifications, and high RI, making it the preferred imaging modality for early clinical diagnosis of PTMC.
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