Strain Elastography for Differentiation between Benign and Malignant Thyroid Nodules

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Thyroid nodules are common, and differentiating benign from malignant types is crucial for appropriate management.
• Conventional ultrasound has limitations in definitively characterizing thyroid nodules.
• Strain elastography offers a non-invasive method to assess tissue stiffness, potentially improving diagnostic accuracy.

Purpose of the Study:

• To evaluate the diagnostic accuracy of strain elastography in distinguishing between benign and malignant thyroid nodules.
• To compare sonoelastography findings with cytology, considered the gold standard.

Main Methods:

• A descriptive study was conducted on 110 patients with solid thyroid nodules.
• Patients underwent conventional ultrasound followed by strain ultrasound elastography.
• Sonoelastographic findings were correlated with cytological results.

Main Results:

• Strain elastography demonstrated high diagnostic performance with 90.0% sensitivity, 90.0% specificity, and 90.0% overall accuracy.
• The positive predictive value was 91.53% and the negative predictive value was 88.24%.
• An optimal cutoff of 2.57 for elasticity strain was identified using ROC curve analysis, with an AUC of 0.933.

Conclusions:

• Strain elastography is a highly accurate, non-invasive imaging modality for differentiating benign and malignant thyroid nodules.
• Its high diagnostic accuracy supports its role as a valuable tool in the workup of thyroid nodules.
• Further research can explore its integration into routine clinical practice for thyroid nodule assessment.