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46th Annual Meeting of the European Thyroid Association (ETA) 2024

Oral Presentations

Oral Session 12: Clinical thyroid cancer research

ea0101op-12-01 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Predictive factors of persistent disease in a large cohort of pediatric patients with differentiated thyroid carcinoma

De Leo Simone , Bottici Valeria , Pellegriti Gabriella , Mian Caterina , Orlandi Fabio , Grazia Castagna Maria , Pozza Carlotta , Wasniewska Malgorzata , Cabria Manlio , Brigante Giulia , Brignardello Enrico , Cristina Vigone Maria , Chiara Zatelli Maria , Dolci Alessia , ARVAT Emanuela , Giorgino Francesco , Giachetti Marcello , Laura Tanda Maria , Fugazzola Laura , Elisei Rossella

Objectives: Differentiated thyroid carcinoma (DTC) in pediatric patients has peculiar clinical, pathological, and molecular characteristics, making its management different from the adult patients. Our study aimed to evaluate the outcome and predictive factors for persistent disease in a large cohort of pediatric patients.Methods: We performed a multicentric Italian study, enrolling patients aged ≤18 years old, diagnosed with a DTC, since January 2...

ea0101op-12-02 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Insights from active surveillance: patterns of papillary thyroid carcinoma growth and conversion surgery outcomes

Sugitani Iwao , Jikuzono Tomoo , Nagaoka Ryuta , Saitou Marie , Sen Masaomi , Kazusaka Hiroko , Matsui Mami , Abe Takeshi , Ito Ryo , Morita Tetsuji , Toda Kazuhisa , Asaka Reimi , Chiba Tomohiro

Objectives: Studies on active surveillance (AS) for low-risk papillary thyroid carcinoma (PTC) have shown that tumors typically enlarge to some degree during youth but stabilize thereafter. However, concerns still exist regarding cases exhibiting rapid progression during observation. The present study reviewed AS outcomes since the 1990s and investigated tumor growth patterns alongside delayed conversion surgery results.Methods: Patients with low-risk PT...

ea0101op-12-03 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Patients with medullary thyroid carcinoma and long term treatment with vandetanib: a study from the endocan –tuthyref network

Lasolle Helene , Lamartina Livia , Do Cao Christine , Buffet Camille , Schneegans Olivier , Gauduchon Thibault , Drui Delphine , Benisvy Danielle , Solange Grunenwald , Godbert Yann , Bardet Stephane , Batisse-Lignier Marie , Chougnet Cecile , Zerdoud Slimane , Roudaut Nathalie , Illouz Frederic , Sajous Christophe , Hadoux Julien , Isabelle Borget , Borson-Chazot Francoise

Introduction: Vandetanib was the first tyrosine kinase inhibitor approved for the first line systemic treatment of progressive metastatic or locally advanced medullary thyroid carcinomas (MTC). Previous studies reported median duration of treatment (DOT) around 20 months with a subset of patients presenting long-term responses. Little is known on the impact of RET mutation status on the response duration.Objectives: To evaluate the proportion and compare...

ea0101op-12-04 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Pronosthyc: prognostic factors in radioiodine refractory differentiated thyroid cancer with distant metastases, a multicentric study from a french network of referral centers

Sagnella Alfonso , Lasolle Helene , Godbert Yann , Do Cao Christine , Drui Delphine , Hescot Segolene , Laramas Mathieu , Sage Clemence , Wassermann Johanna , Roudaut Nathalie , Illouz Frederic , Borson-Chazot Francoise , Bachir Abdelouahab Macine , Hadoux Julien , Borget Isabelle , Buffet Camille , Lamartina Livia

Background: Radioiodine-refractory differentiated thyroid cancer (RAI-R DTC) patients with distant metastases show poor survival rates. However, patientsÂ’ outcome can be very heterogeneous, with cases spanning from microscopic slowly growing metastases to symptomatic, rapidly progressive disease. The aim of this study was to assess the overall survival (OS) of RAI-R DTC patients with distant metastases and to identify the prognostic factors associated with OS.<p class...

ea0101op-12-05 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Real world outcomes of patients with radioiodine-refractory differentiated thyroid cancer (RAI-R DTC) treated in 1l with lenvatinib 24 mg: an international multicenter real-world study in europe and canada

Locati Laura , Gordoa Teresa , Lamartina Livia , Luster Markus , Rajkovic-Hooley Olivera , Cooper Charley , Reynolds Neil , Milligan Gary , Brown Ian , Saal Hakim , Borbolla-Escoboza Jose

Objectives: Lenvatinib was approved for the treatment of patients with radioiodine-refractory differentiated thyroid cancer (RAI-R DTC) in Europe in 2015 and Canada in 2016. This study investigated real-world clinical outcomes in patients with RAI-R DTC initiated with 24 mg lenvatinib once daily as first-line monotherapy in Europe and Canada.Methods: A retrospective patient chart review was conducted. The study cohort comprised RAI-R DTC patients initiat...

ea0101op-12-06 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Insight of prospective nora (no radioiodine ablation) study in patients with differentiated thyroid carcinoma (DTC)

Lisi Giulia , Gambale Carla , Contartese Lea , De Napoli Luigi , Torregrossa Liborio , Materazzi Gabriele , Agate Laura , Molinaro Eleonora , Elisei Rossella , Matrone Antonio

Objectives: Radioiodine therapy with ablative purposes is less and less used in low (LR) and intermediate (IR) risk DTC patients. The aim of this prospective ongoing study is to evaluate the clinical trend over time of patients with DTC who do not receive treatment with radioiodine.Methods: Patients with high or intermediate-high risk in whom radioiodine treatment was performed after surgery were excluded. Data of 425 consecutive patients with DTC who jo...

ea0101op-12-07 | Oral Session 12: Clinical thyroid cancer research | ETA2024

Randomized clinical trial of prophylactic central neck dissection in 2100 papillary thyroid carcinoma patients with clinically negative central neck metastasis: an interim analysis of a single institution

Back Kyorim , Soo Kim Jee , Kim Jung-Han , Choe Jun-Ho

Background: Prophylactic central neck dissection (pCND) in patients with no clinical nodal disease (cN0) is one of the major concern and ongoing controversy in thyroid surgery. However, there are no clear evidence because prospective randomized clinical tirals are still not enough to make definite recommendations. The purpose of our study was to investigate prognostic pros & cons of pCND to provide reliable evidence on this topic.Method: A total of 2...