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<p>Thyroid incidentalomas are increasingly detected due to widespread use of imaging modalities such as CT, MRI, and FDG-PET. Most are benign or low-risk papillary carcinomas, yet the challenge remains to balance early cancer detection with the risk of overdiagnosis and overtreatment. To review current evidence and provide a practical, risk-stratified approach to the evaluation and management of incidentally discovered thyroid nodules, with a focus on identifying clinically significant malignancy while avoiding unnecessary interventions. This narrative review synthesizes recent data from endocrine society guidelines, radiologic and pathologic studies, and institutional experiences to propose clinical pathways. It incorporates imaging criteria (including ACR and TIRADS guidelines), cytology (Bethesda classification), and special clinical contexts. The role of FDG-PET and AI-assisted diagnostic tools is discussed. Most thyroid incidentalomas are benign and do not require invasive workup. High-risk features on imaging (e.g., focal FDG uptake, suspicious ultrasound characteristics) warrant further evaluation. Significant thyroid cancer is defined by features such as metastatic spread, invasive behaviour, aggressive histology, or occurrence in high-risk patients. Overdiagnosis leads to unnecessary surgeries, with up to 76% of indeterminate nodules proving benign postoperatively. Specific scenarios (e.g., in transplant, breast cancer, or head and neck cancer patients) require tailored evaluation. Clinicians should adopt a selective, risk-based approach to thyroid incidentalomas. Early detection of clinically significant thyroid cancer must be balanced against minimizing harm from overdiagnosis. Judicious use of ultrasound, fine-needle aspiration, and incorporation of clinical context can guide appropriate management.</p>

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Approach to Thyroid Incidentaloma

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Ashish John Varghese,
  • Khalil Ibrahim Macki,
  • Mazhuvanchary Jacob Paul

摘要

Thyroid incidentalomas are increasingly detected due to widespread use of imaging modalities such as CT, MRI, and FDG-PET. Most are benign or low-risk papillary carcinomas, yet the challenge remains to balance early cancer detection with the risk of overdiagnosis and overtreatment. To review current evidence and provide a practical, risk-stratified approach to the evaluation and management of incidentally discovered thyroid nodules, with a focus on identifying clinically significant malignancy while avoiding unnecessary interventions. This narrative review synthesizes recent data from endocrine society guidelines, radiologic and pathologic studies, and institutional experiences to propose clinical pathways. It incorporates imaging criteria (including ACR and TIRADS guidelines), cytology (Bethesda classification), and special clinical contexts. The role of FDG-PET and AI-assisted diagnostic tools is discussed. Most thyroid incidentalomas are benign and do not require invasive workup. High-risk features on imaging (e.g., focal FDG uptake, suspicious ultrasound characteristics) warrant further evaluation. Significant thyroid cancer is defined by features such as metastatic spread, invasive behaviour, aggressive histology, or occurrence in high-risk patients. Overdiagnosis leads to unnecessary surgeries, with up to 76% of indeterminate nodules proving benign postoperatively. Specific scenarios (e.g., in transplant, breast cancer, or head and neck cancer patients) require tailored evaluation. Clinicians should adopt a selective, risk-based approach to thyroid incidentalomas. Early detection of clinically significant thyroid cancer must be balanced against minimizing harm from overdiagnosis. Judicious use of ultrasound, fine-needle aspiration, and incorporation of clinical context can guide appropriate management.