Abstract: Objective: To analyze new 2015 guidelines from the American Thyroid Association (ATA) compared to 2009, and their impact on thyroidectomy extension in patients with papillary thyroid carcinoma. Material and methods: Retrospective study of patients with papillary thyroid cancer, who had surgery in two different periods, 2013-2016 (group A) and 2017-2018 (group B), comparing the number of hemithyroidectomies (HT) vs total thyroidectomies (TT), whether or not to perform lymph node dissection (DG), hospital stay, and perioperative complications. Results: 108 patients were studied, 54 in each group, comparing group A to group B: there were no differences in the number of HT (3 vs 2) and TT (51 vs 52). Performing a higher number of central DG (22 vs 32) and modified radical 7 vs 9. No significant difference was found in HT surgery time (100.0 ± 29.4 vs 135.0 ± 15.0 min [p = 0.569]), nor in TT (114.0 ± 40.9 vs 127.9 ± 63.8 min [p = 0.877]), bleeding (28.5 ± 45.2 vs 28.9 ± 89.6 mL [p = 0.977]) and length of stay (2.1 ± 1.3 vs 1.9 ± 0.9 [p = 0.374]). Conclusions: The recommendations of the extension in surgery had no impact on the surgical attitude. Complications were similar.

Resumen: Objetivo: Analizar nuevas guías 2015 de la Asociación Americana de Tiroides (ATA, por sus siglas en inglés) comparadas con las de 2009 y su impacto en extensión de tiroidectomía en pacientes con carcinoma papilar tiroideo. Material y métodos: Estudio retrospectivo de pacientes con cáncer papilar de tiroides operados en dos periodos distintos, 2013-2016 (grupo A) y 2017-2018 (grupo B), comparando número de hemitiroidectomías (HT) versus tiroidectomías totales (TT), realización o no disección ganglionar (DG), estancia hospitalaria y complicaciones perioperatorias. Resultados: Se estudiaron 108 pacientes, 54 en cada grupo, comparando grupo A con grupo B: no hubo diferencias en número de HT (tres versus dos) y TT (51 versus 52). Se realizó un número mayor de DG central (22 versus 32), y radical modificada siete versus nueve. No se encontró diferencia significativa en tiempo operatorio de HT (100.0 ± 29.4 versus 135.0 ± 15.0 min [p = 0.569]) ni en TT (114.0 ± 40.9 versus 127.9 ± 63.8 min [p = 0.877]), sangrado (28.5 ± 45.2 versus 28.9 ± 89.6 mL [p = 0.977]) y días de estancia hospitalaria (2.1 ± 1.3 versus 1.9 ± 0.9 [p = 0.374]). Conclusiones: Las recomendaciones de la extensión en cirugía no ha tenido impacto en la actitud quirúrgica. Las complicaciones fueron similares.