ArticleTumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine2016
Bilaterality weighs more than unilateral multifocality in predicting prognosis in papillary thyroid cancer.
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Who cites it
24 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- 2025 American Thyroid Association Management Guidelines for Adult Patients with Differentiated Thyroid Cancer.Thyroid : official journal of the American Thyroid Association · 2025Guideline
- The Differences Between Multifocal and Unifocal Papillary Thyroid Carcinoma in Unilateral Lobe: A Meta-Analysis.Frontiers in oncology · 2021Pooled it
- Validation of the 2025 ATA risk stratification system in a cohort of patients with papillary thyroid carcinoma.The Journal of clinical endocrinology and metabolism · 2026Observational
- Impact of Tumor Bilaterality and Multifocality in Predicting Recurrence of Papillary Thyroid Carcinoma: A Retrospective Cohort Study.Endocrinology and metabolism (Seoul, Korea) · 2026Article
- Predictors of Complete Remission in Differentiated Thyroid Cancer: A Study from the Nuclear Medicine Department of Ibn Rochd Hospital in Casablanca, Morocco.Ethiopian journal of health sciences · 2025Article
- Clinical efficacy of radioactive iodine therapy in multifocal papillary thyroid microcarcinoma: a tertiary center experience.Endocrine · 2025Article
- The differences between unilateral multifocality and bilateral multifocality in papillary thyroid carcinoma: a retrospective cohort study.Gland surgery · 2024Article
- The Role of 5-Hydroxymethylcytosine as a Potential Epigenetic Biomarker in a Large Series of Thyroid Neoplasms.Endocrine pathology · 2024Article
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- The value of total tumor diameter in unilateral multifocal papillary thyroid carcinoma: a propensity score matching analysis.Frontiers in endocrinology · 2023Article
- Number of Tumor Foci as a Risk Factor for Recurrence in Papillary Thyroid Carcinoma: Does It Improve Predictability?Cancers · 2022Article
- Clinical outcomes of multifocal papillary thyroid cancer: A systematic review and meta-analysis.Laryngoscope investigative otolaryngology · 2022Review
- Bilateral multifocality is an independent predictor of patients' outcome in Middle Eastern papillary thyroid carcinoma.Frontiers in endocrinology · 2022Article
- ERBB2 as a prognostic biomarker correlates with immune infiltrates in papillary thyroid cancer.Frontiers in genetics · 2022Article
- Risk factors of cervical lymph node metastasis in multifocal papillary thyroid cancer.Frontiers in oncology · 2022Article
- Multifocality and Progression of Papillary Thyroid Microcarcinoma During Active Surveillance.World journal of surgery · 2021Article
- Real-Time Elastography: A Web-Based Nomogram Improves the Preoperative Prediction of Central Lymph Node Metastasis in cN0 PTC.Frontiers in oncology · 2021Article
- Clinical Study of Virtual Reality Augmented Technology Combined with Contrast-Enhanced Ultrasound in the Assessment of Thyroid Cancer.Journal of healthcare engineering · 2021Article
- Prognostic significance of the sum of the diameters of single foci in multifocal papillary thyroid cancer: the concept of new-old tumor burden.Therapeutic advances in endocrinology and metabolism · 2020Article
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Abstract
Papillary thyroid cancer (PTC) often presents as multifocal tumor;, however, whether multifocality is associated with poor prognosis remains controversial. The aims of this retrospective study were to identify the characteristics of PTC with multifocal tumors and evaluate the association between the location and prognosis. We reviewed the medical records of 496 patients who underwent total thyroidectomy for PTC. Patients were classified as three groups: N1 (solitary tumor), N2 (2 or more foci within unilateral lobe of thyroid), and N3 (bilateral tumors, at least one tumor focus for each lobe of thyroid). We analyzed the differences of clinicopathologic features and clinical outcomes among the three groups. Cox regression model was used to assess the relation between the different locations of multifocal tumors and prognosis. Although the differences of clinicopathologic features such as the size of tumor, extrathyroidal extension, and cervical lymph node metastasis were not significant among the three groups, the bilateral-multifocality was proved to be an independent risk factor for neck recurrence (hazard ratio (HR) = 4.052, 95 % confidence interval (CI) 2.070-7.933), distant metastasis (HR = 3.860, 95 % CI 1.507-9.884), and cancer death (HR = 7.252, 95 % 2.189-24.025). In addition, extrathyroidal extension (HR = 2.291, 95 % CI 1.185-4.427) and older age >45 years (HR = 6.721, 95 % CI 2.300-19.637) were also significant predictors for neck recurrence and cancer death, respectively. Therefore, bilateral-multifocality as an indicator for more extensive tumor location could be used to assess the risk of recurrence and mortality in PTC. Given the poor prognosis associated with bilateral-multifocality and other risk factors, aggressive therapy and intensive follow-up were recommended for PTC patients with them.
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