[Retrospective study of 130 patients with organconfined prostate cancer treated with brachytherapy]. / Estudio retrospectivo de 130 pacientes con cáncer prostático organoconfinado tratados con braquiterapia prostática.

INTRODUCTION: The prostate brachytherapy with I 125 seeds has an indication in patients with organconfined prostate cancer. Our objective is to describe the population treated in our institution with permanent I125 seeds implants, the dosimetric characteristics of the technique and the preliminary results of our group-study in terms of evolution and toxicity. MATERIAL AND METHODS: Between May 2000 and March 2003, 130 patients with permanent implants of I125 seeds were treated. Beforehand we did prostate volumetric with transrectum prostate echography in order to assess the configuration of the implant, number of seeds and their place in the prostate with the objective to get a fine coverage of PTV (planet target volume). Stage distribution: 75.72% T1c; 24.28% T2a; Gleason<6, 94%. The PSA pretreatment average was 6.38 ng/ml. The average prostate volume was 30 cc. The 16.67% of the patients included had hormonal treatment previously to get the implants. The average age was 64 years. The characteristic techniques of the implants were: the average width of the needle as 24 (14-35) and the average of the seeds 76 (46-111). Finally the average activity was 0.39 mCi/seed, which means average total implant activity of 80 mCi. RESULTS: We analyzed 130 patients with average follow up 6 months. A 1 to 2 year surveillance was carried out on 98.9% and the global free disease surveillance (biochemic relapse) of 98.9% at the year and of the 87.8% at the end of the 2 years. The relapse in the low risk patients was 98.8% after the first year and 88.7% at the end of 2 year. On the contrary in the middle risk was of 100% and 83% respectively, although the amount of patients in significantly less. As a relevant acute secondary effects we found slight rectitys or GI (RTOG scale) in 1.4 and that needs synthomatic medication or GII (RTOG scale) in 0.8%. We found slide hematuria or GI (RTOG scale) in the 53% and other measures or GII (RTOG scale) in the 2.64% was needed. Finally we had to set a urinary prove for acute retention in 4.3%. CONCLUSION: The prostate brachyterapy is a complex procedure that needs a multidisciplinary team participation in order to be able to carry out. It avoids a long term hospitalization and allows for the patient to have daily activity within a short period of time. Despite the fact of the brief follow-up, the results over biochemical relapse and toxicity were similar to the ones in the literature. Tolerance to the implant was good. It would necessary a longer follow-up in order to be able to come to long term conclusions.

Estudio retrospectivo de 130 pacientes con cáncer prostático organoconfinado tratados con braquiterapia prostática / Retrospective study of 130 patients with organconfined prostate cancer trated with brachitherapy

Introducción: La braquiterapia prostática con semillas de I125 está indicada en pacientes con cáncer de próstata organoconfinado. Nuestro objetivo es describir la población tratada en nuestra institución mediante implante permanente con semillas de I125, las características dosimétricas de la técnica y los resultados preliminares de nuestra serie en cuanto a evolución y toxicidad. Material y métodos: Entre mayo 2000 y marzo de 2003 fueron tratados 130 pacientes con implante permanente transperineal de semillas de I125. Previamente a todos se les realizó volumetría mediante una ecografía prostática transrectal para determinar la configuración del implante, número de semillas y su localización en la próstata con el fin de obtener una adecuada cobertura del PTV (planed target volume o volumen planificado para tratar). Distribución por estadios: 75,72% T1c; 24,28% T2a. Gleason < 6, 94,24%. La mediana del PSA pretratamiento 6,38 ng/ml. El volumen prostático mediano fue de 30 cc. El 16,67% de los pacientes cuando los recibimos llevaban tratamiento hormonal previo al implante. La edad mediana fue de 64 años. En cuanto a las características técnicas de los implantes: la mediana de agujas utilizadas fue de 24 (14-35), y la mediana de semillas: 76 (46-111). Finalmente la mediana de la actividad fue de 0,39mCi/semilla, lo que supuso una actividad total implantada media de 80 mCi. Resultados: Analizamos los 130 pacientes con un seguimiento mínimo de 6 meses. La supervivencia a 1 y 2 años fue del 99,1% y la supervivencia libre de enfermedad global del 98,9% al año y del 87,8% a los dos años La supervivencia libre de enfermedad bioquímica en los pacientes de bajo riesgo eran, al año de 98,8% y a los dos años del 88,7%. Por el contrario en los de riesgo intermedio eran del 100% y del 83,3% respectivamente, aunque el número de pacientes es significativamente menor. Como efectos secundarios agudos relevantes encontramos rectitis leve o GI (escala de la RTOG) en 1,4% y que necesitó medicación sintomática o GII (escala de la RTOG) en 0,8%. Se presentó hematuria leve o GI (escala de la RTOG) el 53%, y que precisaran otras medidas o GII (escala de la RTOG) en el 2,64%. Finalmente hubo que colocar sonda urinaria por retención aguda el 4,3%. Conclusión: La braquiterapia prostática es un procedimiento complejo que exige la participación de un equipo multidisciplinar en su realización. Evita una hospitalización prolongada y permite al paciente recuperar sus actividades cotidianas en un periodo corto de tiempo. Aunque la media de seguimiento es corta, los resultados en cuanto a supervivencia libre de recidiva bioquímica y toxicidad son comparables a los descritos en la literatura. La tolerancia al implante ha sido buena. Es necesario un mayor seguimiento para poder establecer conclusiones a largo plazo

Introduction: The prostate brachitherapy with I 125 seeds has an indication in patients with organconfined prostate cancer. Our objective is to describe the population trated in our institution with permanent I125 seeds implants, the dosimetric characteristics of the technique and the preliminary results of our group-study in terms of evolution and toxicity. Material and methods: Between May 2000 and March 2003, a 130 patients with permanent implants of I125 seeds were trated. Beforehand we did prostate volumetric with transrectum prostate ecography in order to asses the configuration of the implant, number of seeds and their place in the prostate with the objective to get a fine coverage of PTV (planet target volume). Stage distribution: 75.72% T1c; 24.28% T2a. Gleason<6, 94%. The PSA pretreatment average was 6.38 ng/ml. The average prostate volume was 30 cc. The 16.67% of the patients included had hormonal treatment previously to get the implants. The average age was 64 years. The characteristic techniques of the implants were: the average width of the needle as 24 (14-35) and the average of the seeds 76 (46-111). Finally the average activity was 0.39 mCi/seed, wic means average total implant activity of 80 mCi. Results: We analized 130 patients with average follow up 6 months. A 1 to 2 year surveillance was carried out on 98.9% and the global free disease surveillance (biochemic relapse) of 98.9% at the year and of the 87.8% at the end of the 2 years. The relapse in the low risk patients was, 98.8% after the first year and 88.7% at the end of 2 year. On the contrary in the middle risk was of 100% and 83% respectively, although the amount of patients in significantly less. As a relevant acute secondary effects we found slight rectitys or GI (RTOG scale) in 1.4 and that needs synthomatic medication or GII (RTOG scale) in 0.8%. We found slide hematuria or GI (RTOG scale) in the 53% and other measures or GII (RTOG scale) in the 2.64% was needed. Finally we had to set a urinary prove for acute retention in 4.3%. Conclusion: The prostate brachiterapy is a complex procedure that needs a multidisciplinary team participation in order to be able to carry out. It aboids a long term hospitalitzation and allows for the patient to have daily activity within a short period of time. Despite the fact of the brief follow-up, the results over biochemical relaps and toxicity were similars to the ones in the literature. Tolerance to the implant was good. It would necessary a longer follow-up in order to be able to come to long term conclusions

[Results of Iodine-125 radiotherapy in the treatment of uveal melanoma]. / Resultados de la radioterapia con placas de Iodo-125 en el tratamiento del melanoma de úvea.

PURPOSE: To evaluate our experience in the treatment of uveal melanoma by means of Iodine-125 brachytherapy. A reprospective case series study. MATERIAL AND METHOD: Patients diagnosed of uveal melanoma and treated with Iodine-125 brachytherapy in the Ciudad Sanitaria y Universitaria de Bellvitge (CDUV), from September 1996 to December 2000 and follow up of more than one year. RESULTS: During the period of study, 145 patients were diagnosed of uveal melanoma, of which, 77 were treated with Iodine-125 COMS type plaques; among these, 58 were elegible for this study. After a mean of 2.4 year follow up period (878 days) a mean reduction in height of 53.84% and a mean reduction in volume of 75.88% was observed. As for visual acuity, 32.7% of patients presented a vision of 0.1 or better in last follow up check; 13.5% presented low vision at the moment of diagnosis and continued the same up to last follow up check. The rest of patients experienced loss which conditioned vision to less than 0.1. As for complications, we have observed transient diplopia (8.6%), cataract (3.4%), vitreous bleeding (10.3%), neovascular glaucoma (6.8%), radiation retinopathy (17.24%), radiation neuropathy (6.8%), posterior scleritis (2%), pigmental scattering (2%), tumor progression (2%), endophtalmitis (2). Secondary enucleations were carried out in 6.8% of patients. Metastatic disease was observed in 15.5% of the patients. CONCLUSIONS: Brachytherapy with Iodine-125 may induce significant regression in most of patients affected of uveal melanoma, with good preservation of visual acuity and a low rate of complications.

Resultados de la radioterapia con placas de iodo-125 en el tratamiento del melanoma de úvea / Results of iodine-125 radiotherapy in the treatment of uveal melanoma

Objetivo: Evaluar nuestra experiencia en el tratamiento del melanoma maligno de úvea mediante braquiterapia con Iodo-125.Diseño: Estudio retrospectivo de una serie de casos. Material y métodos: Pacientes diagnosticados de melanoma de úvea y tratados mediante braquiterapia con Iodo-125 en la Ciudad Sanitaria y Universitaria de Bellvitge (CSUB), desde septiembre del 1996 hasta diciembre del 2000, y con un seguimiento superior a un año. Resultados: Durante el período de estudio hemos diagnosticado 145 pacientes de melanoma de úvea, de los cuales 77 fueron tratados mediante placas radioactivas tipo COMS cargadas con Iodo-125, de los cuales 58 eran elegibles para el estudio. Con un seguimiento medio de 2,4 años (878 días), se ha constatado una reducción media del grosor tumoral inicial de un 53,84 por ciento y una reducción media del volumen tumoral de un 75,88 por ciento. n cuanto a la agudeza visual, el 32,7 por ciento de los pacientes presentaban una visión en su último seguimiento igual o mejor a 0,1; el 13,5 por ciento presentaban una baja visión en el momento del diagnóstico y continuaban con ella en el último seguimiento; y el resto de los pacientes habían experimentado una pérdida que les condicionaba una visión inferior a 0,1.En cuanto a las complicaciones hemos observado, diplopía transitoria (8,6 por ciento), cataratas (3,4 por ciento), hemovítreo (10,3 por ciento), glaucoma neovascular (6,8 por ciento), retinopatía por radiación (17,24 por ciento), neuropatía por radiación (6,8 por ciento), escleritis posterior (2 por ciento), dispersión pigmentaria (2 por ciento), progresión tumoral (3,4 por ciento), endoftalmitis (2 por ciento).Se ha realizado enucleación secundaria en el 6,8 por ciento. Hemos observado la aparición de metástasis en el 15,5 por ciento de pacientes. Conclusiones: La braquiterapia con Iodo-125, es capaz de inducir una regresión significativa en la mayoría de pacientes portadores de un melanoma maligno de úvea, con buena preservación de su agudeza visual, y con índices de morbilidad bajos (AU)