Do hyperechoic thyroid nodules on B-ultrasound represent calcification?

Area of Science:

• Radiology
• Pathology
• Oncology

Background:

• Thyroid nodules are common, and differentiating benign from malignant types is crucial.
• Hyperechoic appearances on B-ultrasound can indicate calcification, a potential marker for malignancy.
• Histological confirmation of calcification is the gold standard for diagnosis.

Purpose of the Study:

• To investigate the correlation between hyperechoic thyroid nodules detected via B-ultrasound and histological calcification.
• To assess the diagnostic accuracy of B-ultrasound in identifying calcification within thyroid nodules.

Main Methods:

• Retrospective analysis of patients who underwent surgical thyroid nodule removal.
• Comparison of B-ultrasound findings of calcification with postoperative histopathology results.
• Calculation of sensitivity and specificity for B-ultrasound in detecting calcification.

Main Results:

• Out of 1,655 patients, B-ultrasound detected calcification in 366 malignant and 414 benign nodules.
• Histology confirmed calcification in 209 malignant and 127 benign nodules.
• B-ultrasound demonstrated high sensitivity (95.87% for cancer, 90.71% for benign) but variable specificity for calcification detection.

Conclusions:

• B-ultrasound is a sensitive tool for detecting calcification in thyroid nodules.
• A strong association exists between calcification, particularly microcalcification, and thyroid cancer.
• B-ultrasound findings of calcification correlate closely with pathological examination, aiding in cancer diagnosis.