Thyroid Nodule

Obtain a focused history for childhood or therapeutic neck irradiation, familial thyroid cancer syndromes, rapid structural change, and relevant comorbidity. Familial nonmedullary thyroid cancer is associated with multifocal disease, local invasion, nodal metastases, and local or regional recurrence more often than sporadic disease; this history should lower the threshold for expert ultrasound review and multidisciplinary planning. NatureNatureFamilial thyroid cancer: a review | Modern Pathology

Avoid screening thyroid ultrasound in asymptomatic adults because detection of benign lesions and indolent malignancies can drive overdiagnosis and treatment morbidity without a demonstrated reduction in thyroid cancer mortality. Evaluate a palpable lesion, a clinically meaningful incidental imaging finding, or a patient with an established nodule instead. PubMedPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

In older adults and patients with substantial competing illness, make diagnostic intensity contingent on whether a result would alter management. A conservative approach can be reasonable for very-low-risk tumors, high operative risk, or limited life expectancy after shared decision-making. PubMedPubMedThyroid nodule evaluation and management in older adults: A review of practical considerations for clinical endocrinologists

Measure serum TSH during initial evaluation. When TSH is suppressed, obtain radionuclide imaging to identify a hyperfunctioning nodule; this functional result redirects evaluation away from an ultrasound-only biopsy pathway and toward defining the cause of thyrotoxicosis. Oxford Academic+1Oxford AcademicThe Treatment of Differentiated Thyroid Cancer in ChildrenPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

If free T4 is normal in a patient with biochemical concern for hyperthyroidism, measure free T3. Consider TSH-receptor antibodies when the clinical context requires clarification of hyperthyroid etiology; consider thyroid peroxidase antibodies when thyroiditis is clinically or sonographically suspected. PubMedPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

Routine calcitonin measurement is not uniformly recommended for every nodule. Consider it selectively when the clinical context raises concern for medullary thyroid carcinoma or when a result would alter preoperative planning. A case of a large, sonographically low-risk nodule illustrates that calcitonin and chromogranin A gene overexpression on molecular testing can identify medullary thyroid carcinoma despite Bethesda III cytology. PubMed+1PubMed2023 European Thyroid Association Clinical Practice Guidelines for ...facs[PDF] Unexpected Diagnosis of Sporadic Medullary Thyroid Carcinoma

Perform dedicated thyroid and cervical lymph-node ultrasound and assign a validated risk category. Both major guideline approaches support ultrasound to determine whether a nodule warrants ultrasound-guided fine-needle aspiration cytology rather than using palpation or size alone. Wiley+2WileyEvaluation and Management of Thyroid Nodules: A Joint Consensus ...Wolters KluwerPerformance of European Thyroid Imaging Reporting and Data... : Journal of Medical UltrasoundPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

In EU-TIRADS, high-risk category 5 requires at least one high-suspicion feature: irregular shape, irregular margins, microcalcifications, or marked hypoechogenicity. The 2023 ETA algorithm identifies FNA consideration for EU-TIRADS 5 nodules larger than 10 mm and for intermediate-risk EU-TIRADS 4 nodules larger than 15 mm; apply the reporting system’s complete recommendation set rather than transplanting thresholds across systems. PubMedPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

A spongiform appearance is strongly associated with benignity in the cited evidence, with 99.7% specificity and a 98.5% negative predictive value for malignancy. It does not eliminate the need to apply size-based biopsy criteria or reconsider the diagnosis when the lesion is large, symptomatic, growing, or otherwise clinically discordant. facsfacs[PDF] Unexpected Diagnosis of Sporadic Medullary Thyroid Carcinoma

Do not add scintigraphy solely because a nodule falls below an ACR TI-RADS FNA threshold in an otherwise routine setting. In a retrospective cohort, cold scintigraphy prompted FNA in 66 subthreshold nodules, with Bethesda category III or higher cytology in 7 nodules (10.6%); most clinically significant cytology occurred in nodules that already met ACR TI-RADS FNA criteria. Wolters KluwerWolters KluwerAdditional detection of Bethesda greater than or... : Nuclear Medicine Communications

Interpret FNA cytology together with the pretest ultrasound risk category and the clinical scenario. Bethesda category III, atypia of undetermined significance, carries a cited malignancy risk of 6% to 18%; this range should not be treated as equivalent to a definitive malignant diagnosis. facsfacs[PDF] Unexpected Diagnosis of Sporadic Medullary Thyroid Carcinoma

For Bethesda III or IV nodules, assess whether repeat sampling, molecular testing, active surveillance, or diagnostic surgery would change care. In a surgical retrospective cohort of 449 patients with Bethesda III or IV cytology, clinical characteristics and predictors were evaluated, reinforcing that these categories comprise a heterogeneous operative-risk group rather than a uniform indication for surgery. WileyWileyClinical Outcomes of Patients With Bethesda III or IV Cytology on Fine Needle Aspiration of Thyroid Nodules—A Retrospective Study - Khan - 2025 - Endocrinology, Diabetes & Metabolism - Wiley Online Library

Use molecular testing only when its result will meaningfully alter the choice between surveillance and surgery or the scope of surgery. In a reported Bethesda III nodule, molecular evidence of calcitonin and chromogranin A gene overexpression conveyed a greater than 95% probability of medullary thyroid carcinoma and changed management despite absence of RET or RAS mutations. facsfacs[PDF] Unexpected Diagnosis of Sporadic Medullary Thyroid Carcinoma

For Hürthle-cell–predominant aspirates, do not assume Hürthle cells independently establish malignancy. Hürthle-cell metaplasia may occur in chronic lymphocytic thyroiditis, and the presence of Hürthle cells does not increase malignancy risk in most Bethesda categories in cited literature; integrate nuclear atypia, ultrasound findings, and the overall Bethesda category. ScienceDirectScienceDirectA Retrospective Study of Clinicopathologic Outcomes of Nodules With Hürthle Cell Cytology and the Thyroid Nodule App (TNAPP) Ultrasound Recommendations - ScienceDirect

For nodules that do not meet FNA criteria, continue management with the same structured ultrasound framework and reassess if the lesion crosses that system’s biopsy threshold or develops a more suspicious pattern. Avoid indiscriminate early biopsy of small lesions, because the major management problem in thyroid nodule care is overdiagnosis and excess morbidity from downstream treatment. PubMed+1PubMedThyroid nodule evaluation and management in older adults: A review of practical considerations for clinical endocrinologistsPubMed2023 European Thyroid Association Clinical Practice Guidelines for ...

When surgery is under consideration, incorporate suspected tumor biology, multifocality risk, local invasion, nodal disease, hereditary context, operative risk, and patient preference. Familial nonmedullary thyroid cancer has higher reported rates of multifocal disease, intraglandular dissemination, local invasion, recurrence, and lymph-node metastases, supporting early specialist involvement when a familial pattern is present. NatureNatureFamilial thyroid cancer: a review | Modern Pathology

For an older adult with a very-low-risk tumor or a high risk of operative harm, conservative management may be a rational endpoint rather than a temporary failure to treat. State explicitly whether surveillance is intended because the lesion is below biopsy criteria, because cytology is low risk, or because treatment would not improve patient-centered outcomes. PubMedPubMedThyroid nodule evaluation and management in older adults: A review of practical considerations for clinical endocrinologists