Radioterapia de salvamento para pacientes con cáncer de próstata: experiencia en el Instituto Nacional de Cancerología

Article information

Resumen

Objetivo

describir la experiencia con radioterapia de salvamento en pacientes que presentaron recaída bioquímica, posterior a una prostatectomía radical, en el Instituto Nacional de Cancerología (INC).

Métodos

estudio observacional retrospectivo tipo serie de casos. Se recolectaron los casos atendidos entre 2003 y 2007. Se describió la información mediante estadística descriptiva, empleando frecuencias relativas, así como medidas de tendencia central y de dispersión. Se describió la supervivencia libre de enfermedad.

Resultados

un total de 40 pacientes que recibieron radioterapia de salvamento por recaída bioquímica fueron incluidos. La recaída posprostatectomía se presentó antes de dos años en el 65% de los pacientes. La mediana de PSA prerradioterapia en el presente estudio fue de 0,9ng/ml. El 87,5% de los pacientes fueron tratados con radioterapia conformacional 3D. El 97,5% de los pacientes recibieron una dosis total de 66 Gy. La supervivencia libre de enfermedad según la clasificación de riesgo de la enfermedad fue de 2,29 años, con una mediana de seguimiento de 28,5 meses. Dos pacientes presentaron recaída bioquímica posterior a la radioterapia de salvamento.

Conclusiones

la radioterapia de salvamento se muestra como una intervención apropiada en pacientes con cáncer de próstata que presentaron recaída bioquímica después de prostatectomía radical; el 94% de los pacientes tratados con radioterapia de rescate en el INC entre 2003 y 2007 están libres de recaída.

Palabras clave:

Neoplasias de la próstata

radioterapia

prostatectomía

antígeno prostático específico

Abstract

Objective

To describe a National Cancer Institute (NCI) study on rescue radiotherapy carried out among patients who had biochemical relapse following radical prostatectomy.

Methods

A retrospective, observational study was performed on cases treated from 2003 to 2007; descriptive statistics, using relative frequency as well as measures of central tendency and dispersion, were used to analyze information. Disease free survival was described.

Results

A total of 40 patients who underwent rescue radiotherapy for biochemical relapse were included in the study. Post-prostatectomy relapse occurred within 2 years in 65% of patients. Median pre-radiotherapy PSA was 0.9ng/ml. 3D conformational radiotherapy was used to treat 87.5% of cases; 97.5% of patients received a total dose of 66 Gy. In accordance with disease risk classification, disease free survival was 2.29 years, with 28.5 months median follow-up. Two patients had biochemical relapse following rescue radiotherapy.

Conclusions

Rescue radiotherapy has been shown to be an appropriate intervention for prostate cancer patients with biochemical relapse following radical prostatectomy; 94% of patients treated with rescue radiotherapy at the NCI from 2003 to 2007 are relapse free.

Key words:

Prostatic neoplasms

brachytherapy

prostatectomy

prostate-specific antigen

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