[Thyroid nodules; evaluation of malignancy by ultrasonography]

Area of Science:

• Diagnostic Imaging
• Oncology
• Endocrinology

Context:

• Thyroidectomy procedures require accurate preoperative diagnosis of thyroid nodules.
• Ultrasonography is a key imaging modality for evaluating thyroid lesions.
• Distinguishing benign from malignant thyroid nodules impacts surgical planning and patient outcomes.

Purpose:

• To correlate preoperative ultrasonic findings with final pathological diagnoses in patients undergoing thyroidectomy.
• To assess the sensitivity and specificity of ultrasonography in diagnosing thyroid nodules.
• To identify specific ultrasonic features predictive of malignancy in thyroid nodules.

Summary:

• A study of 102 thyroidectomy cases (1979-1985) correlated preoperative ultrasound with pathology.
• Ultrasound demonstrated 78% sensitivity and 86% specificity for thyroid nodules.
• Irregular shape (97%) and rugged boundaries (95%) were strong indicators of malignancy in solid nodules; internal echo and margin definition were not significant criteria.

Impact:

• Preoperative ultrasonography is vital for diagnosing thyroid nodules and detecting lymph node metastases.
• Specific ultrasonic features, like irregular shape and rugged borders, aid in inferring pathological characteristics.
• Accurate ultrasonic evaluation can lead to improved diagnostic accuracy for thyroid diseases.