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Distribution patterns of microcalcifications in suspected thyroid carcinoma: a classification method helpful for
Chun-Ping Ning1, Qing-Lian Ji2, Shi-Bao Fang3
1Ultrasound Department, The Affiliated Hospital of Qingdao University, No. 16, Jiangsu Road, Southern Distinct, Qingdao, Shandong, 266003, China.
European Radiology
|January 10, 2018
Summary
Distribution patterns of microcalcifications in thyroid nodules are useful for diagnosing thyroid cancers. Microcalcifications outside a nodule or without a nodule are highly specific for cancer detection.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Microcalcifications are common findings in thyroid nodules on ultrasonography.
- Their distribution patterns may offer clues to malignancy.
Purpose of the Study:
- To compare microcalcification distribution patterns in thyroid cancers versus benign lesions.
- To assess the diagnostic utility of these patterns.
Main Methods:
- Analysis of 358 patients with microcalcifications on ultrasonography.
- Classification of microcalcifications into distribution patterns: inside nodules (Type I), inside and surrounding nodules (Type II), and in the absence of nodules (Type III).
- Comparison of distribution patterns between benign and malignant thyroid lesions.
Main Results:
- Distribution patterns differed significantly between malignant and benign lesions (p < 0.01).
- Type II and Type IIIb patterns showed 100% specificity for diagnosing malignant cases.
- Hashimoto thyroiditis was most frequent in Type III patterns.
Conclusions:
- Specific microcalcification distribution patterns, particularly Types II and IIIb, are highly indicative of thyroid cancer.
- Careful review of microcalcifications outside nodules or in their absence is crucial for cancer diagnosis.
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