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Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
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Radioactive iodine ablation may not decrease the risk of recurrence in intermediate-risk papillary thyroid carcinoma.

Seo Ki Kim1, Jung-Woo Woo2, Jun Ho Lee3

  • 1Division of Breast and Endocrine SurgeryDepartment of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.

Endocrine-Related Cancer
|February 27, 2016
PubMed
Summary
This summary is machine-generated.

Radioactive iodine (RAI) ablation did not significantly reduce loco-regional recurrence in intermediate-risk papillary thyroid carcinoma (PTC) patients. Tailored risk assessment is recommended before considering RAI ablation for this patient group.

Keywords:
intermediate-riskpapillary thyroid carcinomaradioactive iodine ablationrecurrence

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Area of Science:

  • Endocrinology
  • Oncology
  • Nuclear Medicine

Background:

  • Radioactive iodine (RAI) ablation is a standard treatment for differentiated thyroid cancer.
  • Its benefit in intermediate-risk papillary thyroid carcinoma (PTC) with specific adverse features remains debated due to limited long-term prognostic data.
  • This study addresses the controversy regarding the prognostic value of RAI ablation in this specific patient subgroup.

Purpose of the Study:

  • To investigate the prognostic benefit of radioactive iodine (RAI) ablation in intermediate-risk papillary thyroid carcinoma (PTC) patients.
  • To resolve the controversy surrounding RAI ablation's effectiveness in patients with microscopic extrathyroidal extension (ETE), lymph node (LN) metastasis, aggressive histology, or vascular invasion.

Main Methods:

  • Retrospective review of 8297 intermediate-risk PTC patients who underwent total thyroidectomy.
  • Data collected from January 1997 to June 2015 at Samsung Medical Center, South Korea.
  • Analysis included patients who received RAI ablation (n=7483) versus those who did not, adjusting for clinicopathological characteristics.

Main Results:

  • RAI ablation did not significantly decrease the risk of loco-regional recurrence (LRR) in intermediate-risk PTC patients (adjusted HR 0.852, P=0.413).
  • No significant reduction in LRR was observed even in patients with aggressive features like BRAF positivity, larger tumor size, multifocality, ETE, or LN metastasis.
  • High-dose RAI ablation (>100 mCi) also did not significantly decrease LRR risk (adjusted HR 0.942, P=0.843).

Conclusions:

  • Radioactive iodine (RAI) ablation does not appear to significantly reduce loco-regional recurrence in intermediate-risk papillary thyroid carcinoma (PTC).
  • The decision to use RAI ablation should be based on individualized risk re-stratification rather than solely on intermediate-risk classification.
  • Further research may be needed to refine risk stratification and treatment guidelines for PTC.