ECEESPE2025 Poster Presentations Thyroid (141 abstracts)
Trends in thyroid cancer in the balearic islands, insights from 2000 – 2020 to 2021 – 2023
Alicia Sanmartín Sánchez 1 , Santiago Tofé Povedano 1 , Guillermo Serra Soler 1 , Mercedes Noval Font 1 , Guadalupe Pérez Bec 2 , Irene Rodríguez Rodríguez 2 , Andreu Campos Peris 1 , Ramón Zafra Jiménez 1 , Alejandro De la Cruz Bonilla 1 & Iñaki Argüelles Jiménez 1
1Son Espases University Hospital, Endocrinology and Nutrition, Palma de Mallorca, Spain; 2Son Llàtzer University Hospital, Endocrinology and Nutrition, Palma de Mallorca, Spain
JOINT2171
Summary: Thyroid cancer (TC) incidence has been rising globally, including in the Balearic Islands. From 2010 to 2020, the spread use of neck ultrasound (US) by clinicians led to the detection of many subclinical cancers, causing overdiagnosis. Our aim is to assess the ongoing trends in TC during the 2021-2023 period.
Methods: We reviewed 322 new TC cases diagnosed between 2021 and 2023 (last update – LU) in the Balearic Islands. Data on histological subtypes, tumor size, initial presence of lymph node and distant metastasis, disease management and disease progression were compared with earlier periods: 2000-2009 (before US), and 2010-2020 (after US), respectively.
Results: TC incidence has tapered down since 2020, but several important trends observed in previous periods are maintained in regards of disease incidence, management and cancer aggressiveness (Table 1).
| Before US (2000-2009) | After US (2010-2020) | LU (2021-2023) | |
| Disease crude incidence (x105 habitants) | 3.35 | 8.39 | 7.46 |
| Estimated annual percent change in incidence, % | 3.05 | 11.37 | -9.77 |
| Incidence of MPTC, % | 14.20 | 20.50 | 21.40 |
| Incidence of aggressive histology, % | 6.48 | 7.15 | 18.01 |
| Anaplastic carcinoma, % (n) | 0.93 (3) | 0.66 (7) | 2.48 (8) |
| Median tumor size (cm ±SD) | 2.78 ±0.45 | 2.04 ±1.56 | 1.88 ±3.88 |
| Lymph node at diagnosis, % | 7.97 | 11.28 | 17.24 |
| Distant metastases at diagnosis, % | 1.38 | 1.91 | 4.19 |
| Initial Lobectomy, % | 1.93 | 5.13 | 33.55 |
| Initial I-131 ablation therapy, % | 87.21 | 74.61 | 54.04 |
| Initial thermal ablation therapy, % (n) | 0 | 0.56 (6) | 2.61 (8) |
Conclusions: During 2021 to 2023, global incidence of TC decreased slightly as compared to our previous series, but overdiagnosis is still present as evidenced by increased incidence of MPTC and smaller tumor size. Nevertheless, there is a persistent trend towards an increased incidence of more aggressive types of tumors both in histological subtypes (including a sharp increase in anaplastic carcinoma) and disease presentation with neck lymph involvement and distant metastases. In line with current recommendations, TC management has improved towards less aggressive procedures (lobectomy and thermal ablation) in selected patients.
Volume 110
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Endocrine Abstracts
ISSN 1470-3947 (print) | ISSN 1479-6848 (online)
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