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Long-term Survival Outcomes of Total Thyroidectomy and Radioactive Iodine Therapy in Unilateral T3/T4 FTC

D

Dezhou Hospital Qilu Hospital of Shandong University

Status

Completed

Conditions

Follicular Thyroid Cancer
SEER Database Analysis

Treatments

Radiation: Radioactive iodine treatment(RAIT)
Procedure: Total Thyroidectomy (TT)

Study type

Observational

Funder types

Other

Identifiers

NCT06437873
DezhouH_2024_001

Details and patient eligibility

About

This study aims to thoroughly examine survival disparities in patients with T3 or T4 stage follicular thyroid carcinoma (FTC) as classified by the AJCC staging system. It compares outcomes between those who underwent total thyroidectomy (TT) and those who did not, and assesses the influence of radioactive iodine therapy (RAIT) on the survival of patients without TT. Utilizing the SEER database, a retrospective study identified patients diagnosed with T3 or T4 FTC, categorizing them into two cohorts: those treated with TT and those who were not (No-TT). The No-TT group was further analyzed to determine the impact of RAIT on patient survival. Propensity score matching (PSM) was applied to adjust for confounding variables. Survival analysis, including Kaplan-Meier survival curves and Landmark analysis, was conducted to evaluate the effects of surgical intervention and RAIT on overall survival (OS) and cancer-specific survival (CSS).

Enrollment

2,957 patients

Sex

All

Ages

5 to 85 years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:1.The primary site code C73.9, denoting the thyroid gland;2.The International Classification of Diseases for Oncology, Third Edition (ICD-O-3) histology types comprising 8330 (Follicular adenocarcinoma, NOS), 8331 (Follicular adenocarcinoma well differentiated), 8332 (Follicular adenocarcinoma trabecular), 8335 (Follicular carcinoma, minimally invasive), and 8339 (Follicular thyroid carcinoma (FTC), encapsulated angioinvasive).

Exclusion Criteria:(1). Absence of T stage information or designation as T1, T2; (2). Missing surgery codes; (3). Cases not verified by histopathological analysis; (4). FTC not being the initial malignancy diagnosed in the patient; (5). Unknown survival duration or survival less than one month; (6). Presence of bilateral tumors.

Trial design

2,957 participants in 4 patient groups

Total Thyroidectomy (TT) Group
Description:
Patients with T3 or T4 stage follicular thyroid carcinoma who underwent total thyroidectomy
Treatment:
Procedure: Total Thyroidectomy (TT)
No Total Thyroidectomy (No-TT) Group
Description:
Patients with T3 or T4 stage follicular thyroid carcinoma who did not undergo total thyroidectomy.
Radioactive Iodine Therapy (RAIT) Group
Description:
Patients in the No-TT group who received radioactive iodine therapy.
Treatment:
Radiation: Radioactive iodine treatment(RAIT)
No Radioactive Iodine Therapy (No-RAIT) Group
Description:
Patients in the No-TT group who did not receive radioactive iodine therapy.

Trial contacts and locations

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Data sourced from clinicaltrials.gov

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