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Vol. 58. Issue 5.
Pages 191-197 (January 2007)
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Vol. 58. Issue 5.
Pages 191-197 (January 2007)
Characterization of the Clinical Evolution of Nasopharyngeal Carcinoma in a Portuguese Population
Caracterización de la evolución clínica del carcinoma de la nasofaringe en una población portuguesa
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Eduardo Bredaa, Raquel Catarinob, Isabel Azevedoc, Tomé Fernandesd, Carlos Barreira da Costaa, Rui Medeirosbe,
Corresponding author
ruimedei@ipoporto.min-saude.pt

Correspondence: Laboratórios. Unidade de Oncologia Molecular. Instituto Português de Oncologia. Dr. A. Bernardino Almeida, 4200-072 Porto. Portugal.
a Departamento de Otorrinolarongologia, Instituto Português de Oncologia, Porto, Portugal
b Oncologia/Virologia Molecular, Instituto Português de Oncologia, Porto, Portugal
c Oncologia Médica, Instituto Português de Oncologia, Porto, Portugal
d Radioterapia, Instituto Português de Oncologia, Porto, Portugal
e ICBAS. Instituto de Ciéncias Biomédicas Abel Salazar, Porto, Portugal
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Objective

Characterization of the clinical evolution of nasopharyngeal cancer (NPC) patients in a Portuguese population during 31 years of follow-up.

Materials and method

Three hundred and twenty patients with epidermoid nasopharyngeal carcinoma were selected for this study. Histological subtypes were analyzed along with survival rates after different treatment schemes and according to AJCC and UICC staging classification systems.

Results

The most frequent histological subtype was undifferentiated nasopharyngeal carcinoma. The AJCC-2001 staging classification was considered the most suitable system for survival prediction. Better survival rates were found in patients treated with adjuvant chemotherapy (cisplatin and 5-fluorouracil) and these findings were similar to other published results.

Conclusions

Although adjuvant chemotherapy may reduce the likelihood of distant metastasis, the latter is still the main cause of death in our study. The distant metastasis rate remains the crucial problem and bringing it down is an ever closer goal and a challenge for the future.

Key words:
Nasopharyngeal carcinoma
Histological subtypes
Clinical evolution
Staging systems
Survival
Treatment
Objetivo

Caracterización de la evolución clínica del carcinoma de la nasofaringe en una población portuguesa en 31 años de seguimiento.

Material y método

Trescientos veinte enfermos portadores de carcinoma epidermoide nasofaríngeo fueron seleccionados para este trabajo. Los siguientes parámetros fueron analizados: variante histológica, tasas de supervivencia después de diferentes modalidades de tratamiento y diferentes estadios (AJCC y UICC).

Resultados

La variante histológica más frecuente fue el carcinoma indiferenciado del tipo nasofaríngeo. La clasificación de la AJCC de 2001 se consideró la más adecuada para el pronóstico de los enfermos. Los enfermos tratados con quimioterapia adyuvante han obtenido mejores tasas de supervivencia, sobre todo los que recibieron tratamiento con cisplatino y 5-fluorouracilo (resultados similares a los obtenidos en otros trabajos).

Conclusiones

Aunque la quimioterapia adyuvante reduzca la probabilidad de metástasis a distancia, continúa siendo la principal causa de muerte constatada en nuestro estudio. La tasa de metástasis a distancia sigue siendo el problema crucial, y disminuirla es una meta cada vez más próxima y un desafío para el futuro.

Palabras clave:
Carcinoma de la nasofaringe
Variantes histológicas
Evolución clínica
Métodos de estadificación
Supervivencia
Tratamiento

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