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Inicio Revista Española de Medicina Nuclear e Imagen Molecular (English Edition) Lung metastases in patients with differentiated thyroid carcinoma and evaluation...
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Vol. 31. Issue 6.
Pages 328-331 (November - December 2012)
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Vol. 31. Issue 6.
Pages 328-331 (November - December 2012)
Original article
Lung metastases in patients with differentiated thyroid carcinoma and evaluation of response to radioiodine therapy
Metástasis pulmonar en pacientes con cáncer diferenciado de tiroides y evaluación de la respuesta a la terapia con radioyodo
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E. Kalender, Y. Zeki Celen, U. Elboga
Corresponding author
umutelboga@hotmail.com

Corresponding author.
, H. Deniz Demir, M. Yilmaz
Gaziantep University Medicine School, Department of Nuclear Medicine, Gaziantep, Turkey
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Table 1. Clinical and pathologic characteristics of the patients.
Table 2. Clinical and pathologic characteristics of groups with lung metastases.
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Abstract
Introduction

The most common site of metastases in differentiated thyroid carcinomas is the lungs. In our study, we aimed to determine the ratios of lung metastases in patients with differentiated thyroid carcinoma and response to radioiodine therapy.

Material and methods

A total of 542 patients with differentiated thyroid carcinoma who were admitted to our clinic were included in the study. High doses of 131I were administered to the patients with lung metastases. Response to therapy were evaluated with 131I scans and stimulated serum Tg levels were examined at least 6 months after therapy.

Results

Lung metastases were detected in 17 (3.1%) of 542 patients with differentiated thyroid carcinoma. Of these patients to whom high doses of 131I therapy were administered, complete response to therapy was obtained in 5 (29.4%), partial response was obtained in 3 (17.6%) and no response could be obtained in 9 (53%) patients.

Conclusion

Although lung metastases from differentiated thyroid carcinomas are rare, those are more common in advanced ages and in males. High doses of 131I therapy may be partially beneficial in these patients. Thus repetition of therapy is frequently required.

Keywords:
Differentiated thyroid carcinoma
Lung metastases
Radioiodine therapy
Resumen
Introduccıón

La localización más común de las metástasis a distancia en tumores diferenciados de tiroides es el pulmón. En este estudio se pretende determinar la proporción de metástasis pulmonares en el cáncer diferenciado de tiroides y su respuesta a la terapia con radioyodo.

Material y métodos

Quinientos cuarenta y dos pacientes con cáncer diferenciado de tiroides fueron incluidos en este estudio. Se administraron altas dosis de 131I a los pacientes con metástasis pulmonares. La respuesta a la terapia se evaluó con estudios con 131I y niveles de tiroglobulina estimulada al menos 6 meses después de la terapia inicial.

Resultados

Se detectaron metástasis pulmonares en 17 (3,1%) de los 542 pacientes. Tras la terapia con dosis altas de 131I se observó respuesta completa en 5 (29,4%), respuesta parcial en 3 (17,6%) y no se obtuvo respuesta en 9 (53%) de los pacientes.

Conclusión

Aunque las metástasis pulmonares en los cánceres diferenciados de tiroides son raras, son más frecuentes en edades avanzadas y en varones. Altas dosis de 131I pueden ser beneficiosas, aunque habitualmente esta terapia debe repetirse.

Palabras clave:
Carcinoma diferenciado de tiroides
Metástasis pulmonares
Terapia con radioyodo

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