ECE2020 ePoster Presentations Thyroid (122 abstracts)
Incidentally discovered thyroid microcarcinomas in patients undergoing thyroid surgery for benign disease
Emma Anda Apiñariz , Ander Ernaga Lorea , Marta Toni García , Patricia Munarriz Alcuaz , Javier Pineda Arribas , Juan Pablo Martínez De Esteban , Nerea Eguilaz Esparza & Ana Irigaray
Complejo Hospitalario de Navarra
Objective: Incidentally discovered thyroid microcarcinomas (TMc) are tumors with a maximal diameter ≥1 cm, indetified during a detailed histopathology examination following a thyroidectomy performed for reasons not pertaining to malignancies of the thyroid gland.
Methods: We included 1555 patients who underwent a total thyroidectomy for benign disease between January 2005 and December 2018. Patients with post-surgical pathology consistent with thyroid cancer with a maximal tumor diameter ≥1 cm were excluded. The incidence of TMc was identified and compared between the different subgroups.
Results: The mean age of the 1555 patients was 53.5 ± 13.8 years and the proportion of women was higher (82.5%, n = 1283). 1206 patients (77.6%) had a preoperative diagnosis of nodular goiter. 136 cases of TMc were identified (prevalence 8.7%). The majority of cases were papillary TMc (91.2%, n = 124).
There were no differences in prevalence according to sex (women 8.6% vs. men 9.6%, P = 0.601) or age (mean age 54.4 ± 12 years in patients with TMc vs. 53.4 ± 14, P = 0.415).
The prevalence was significantly lower in patients with Graves’ disease (5.2% vs. 9.6% in nodular goiter and 9.3% in chronic lymphocytic thyroiditis, P = 0.037).
Conclusion: In our study the prevalence of TMc in patients who underwent total thyroidectomy for benign disease was 8.7%.
The prevalence was significantly lower in patients with Graves’disease.
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Endocrine Abstracts
ISSN 1470-3947 (print) | ISSN 1479-6848 (online)
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