Comparación de las características clínicas en pacientes con carcinoma folicular de tiroides y carcinoma de células de Hürthle / Comparison of clinical characteristics of patients with follicular thyroid carcinoma and Hürthle cell carcinoma

Introducción: El carcinoma de células de Hürthle (CCH) es un tipo de cáncer de tiroides infrecuente considerado históricamente una variante del carcinoma folicular de tiroides (CFT). El objetivo de este estudio fue conocer las diferencias que existen entre estos grupos en cuanto a los factores clínicos y pronósticos. Pacientes y métodos: Se incluyeron 230 pacientes (153 CFT y 77 CCH) con un seguimiento mediano de 13,4 años. Se compararon las diferentes características utilizando el programa estadístico SPSS versión 20. Resultados: Los pacientes con CCH tenían mayor edad (57,3±13,8 años vs. 44,6±15,2 años; p<0,001). También se observaron estadios TNM más avanzados en los CCH, con una mayor tendencia a presentar metástasis a distancia (7,8% vs. 2,7%; p=0,078). El porcentaje de persistencia/recurrencia al finalizar el seguimiento del estudio fue mayor entre los pacientes con CCH (13% vs. 3,9%; p=0,011). Sin embargo, en el análisis multivariante, solo la edad (hazard ratio [HR]: 1,10; intervalo de confianza [IC]: 1,04-1,17; p=0,001), el tamaño (HR: 1,43; IC: 1,05-1,94; p=0,021) y el subtipo histológico (HR: 9,79; IC: 2,35-40,81; p=0,002) se asociaron de forma significativa con el pronóstico, pero no el presentar un CCH. Conclusión: El CCH se diagnostica en pacientes de mayor edad y en estadios más avanzados que el CFT. Sin embargo, si la edad, el tamaño y el subtipo histológico son similares, la supervivencia libre de enfermedad no difiere en ambos grupos (AU)

Introduction: Hürthle cell carcinoma (HCC) is an uncommon thyroid cancer historically considered to be a variant of follicular thyroid carcinoma (FTC). The aim of this study was to assess the differences between these groups in terms of clinical factors and prognoses. Patients and methods: A total of 230 patients (153 with FTC and 77 with HCC) with a median follow-up of 13.4 years were studied. The different characteristics were compared using SPSS version 20 statistical software. Results: Patients with HCC were older (57.3±13.8 years vs. 44.6±15.2 years; P<.001). More advanced TNM stages were also seen in patients with HCC and a greater trend to distant metastases were also seen in patients with HCC (7.8% vs. 2.7%, P=.078). The persistence/recurrence rate at the end of follow-up was higher in patients with HCC (13% vs. 3.9%, P=.011). However, in a multivariate analysis, only age (hazard ratio [HR] 1.10, confidence interval [CI] 1.04-1.17; P=.001), size (HR 1.43, CI 1.05-1.94; P=.021), and histological subtype (HR 9.79, CI 2.35-40.81; P=.002), but not presence of HCC, were significantly associated to prognosis. Conclusion: HCC is diagnosed in older patients and in more advanced stages as compared to FTC. However, when age, size, and histological subtype are similar, disease-free survival is also similar in both groups (AU)

Comparison of clinical characteristics of patients with follicular thyroid carcinoma and Hürthle cell carcinoma. / Comparación de las características clínicas en pacientes con carcinoma folicular de tiroides y carcinoma de células de Hürthle.

INTRODUCTION: Hürthle cell carcinoma (HCC) is an uncommon thyroid cancer historically considered to be a variant of follicular thyroid carcinoma (FTC). The aim of this study was to assess the differences between these groups in terms of clinical factors and prognoses. PATIENTS AND METHODS: A total of 230 patients (153 with FTC and 77 with HCC) with a median follow-up of 13.4 years were studied. The different characteristics were compared using SPSS version 20 statistical software. RESULTS: Patients with HCC were older (57.3±13.8 years vs. 44.6±15.2 years; P<.001). More advanced TNM stages were also seen in patients with HCC and a greater trend to distant metastases were also seen in patients with HCC (7.8% vs. 2.7%, P=.078). The persistence/recurrence rate at the end of follow-up was higher in patients with HCC (13% vs. 3.9%, P=.011). However, in a multivariate analysis, only age (hazard ratio [HR] 1.10, confidence interval [CI] 1.04-1.17; P=.001), size (HR 1.43, CI 1.05-1.94; P=.021), and histological subtype (HR 9.79, CI 2.35-40.81; P=.002), but not presence of HCC, were significantly associated to prognosis. CONCLUSION: HCC is diagnosed in older patients and in more advanced stages as compared to FTC. However, when age, size, and histological subtype are similar, disease-free survival is also similar in both groups.

Diarrea crónica: el primer síntoma de un carcinoma medular de tiroides metastásico / Chronic diarrhea: the first symptom of a metastatic medullary thyroid carcinoma

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