EP30 – Prognostic Factors for Intrathyroidal Papillary Carcinomas – A Multivariate Analysis

     

    Santrac, Nada1; Markovic, Ivan1, 2; Goran, Merima1; Buta, Marko1, 2; Djurisic, Igor1; Dzodic, Radan1, 2
    1 Surgical Oncology Clinic, Institute for Oncology and Radiology of Serbia, Belgrade, Serbia
    2 Medical Faculty, University of Belgrade, Belgrade, Serbia

     

    Background/purpose: The aim of this study was to examine prognostic significance of patient-related, tumor-related and treatment-related factors for intrathyroidal papillary thyroid carcinomas (PTC), via multivariate analysis.

    Methods: This study included 153 patients with intrathyroidal PTCs (pT1/pT2/pT3) surgically treated in our Institution during two-decade period. Patients with locally invasive tumors (pT4) and initial distant metastases (M1) were excluded. Parameters of interest were: gender (male; female), age (£45; >45 years), tumor size (pTNM classification WHO 1984), multifocality (no; yes), histological type of PTC (pure; microcarcinoma; follicular; poorly differentiated), presence of lymphonodal metastases (pN1a; ipsilateral-pN1b; contralateral-pN1b; total), surgery extent (total thyroidectomy; total thyroidectomy with lymphonodal dissections). Univariate and multivariate analysis of all parameters was performed in order to distinguish factors of significance for disease-free (DFS) and cancer-specific overall survival (cs-OS).

    Results: In the follow-up, 10% of patients had locoregional or distant relapse, while 5.2% died due to PTC. Univariate analysis distinguished older age, male gender, tumors over 4cm in diameter, multifocality and poorly differentiated PTC-types as unfavorable prognostic factors for cs-OS. DFS was significantly shorter in males vs. females, as well as in patients with multifocal vs. solitary PTC. Tumor multifocality was unfavorable prognostic factor for both DFS and cs-OS. Independent prognostic factors for intrathyroidal PTCs, based on Cox multivariate analysis, were multifocality and gender for DFS, and multifocality and age at diagnosis for cs-OS.

    Discussion & Conclusions: Prognostic factors define risk groups within population of differentiated PTCs providing timely, adequate treatment and opportunity for longer quality life of patients with PTCs.

 

Leave a Reply

  • Upcoming Events

     

    World Congress on Thyroid Cancer 3.5
    Rome, Italy | 2019

    Steering Committee
    Rocco Bellatone, MD, Co-Chair
    Celestino Lombardi, MD, Co-Chair
    Gregory Randolph, MD
    Bryan McIver, MD
    Jeremy Freeman, MD
    Ian J. Witterick, MD
    Ashok R. Shaha, MD
    Jatin P. Shah, MD

    World Congress on Thyroid Cancer 4.0
    July 29 – August 1, 2021
    Boston, Massachusetts

     

  • WCTC3.5 Steering Committee:

     

    Rocco Bellatone, Co-Chair
    Celestino Lombardi, Co-Chair
    Gregory W. Randolph, MD
    Bryan McIver, MD
    Jeremy Freeman, MD
    Ian J. Witterick, MD
    Ashok R. Shaha, MD
    Jatin P. Shah, MD