Controversial predictors of biochemical recurrence after radical prostatectomy: a study from a Latin American (Brazilian) institution

Aumento da Incidência de Recidiva Bioquímica após Prostatectomia Radical em Centro de Formação em Urologia Oncológica no Brasil: Doenças mais Avançadas estão sendo submetidas à Cirurgia?

Introdução: O câncer de próstata e a neoplasia maligna mais incidente em homens, representando 29% dos diagnósticos da doença no Brasil, segundo o Instituto Nacional de câncer Jose Alencar Gomes da Silva (INCA). Esse câncer e suspeito em alterações do toque retal e/ou do nível sérico do antígeno prostático especifico (PSA) total, sendo o diagnóstico definitivo feito por estudo histopatológico. Objetivo: Verificar a associação entre parâmetros clínicos e anatomopatológicos após prostatectómica radical com recidiva bioquímica ao longo do seguimento. Método: Estudo retrospectivo observacional dos parâmetros clínicos (idade, PSA inicial, toque retal, classificação histopatológica da International Society of Urological Pathology (ISUP), escala de D’Amico e estádio clínico) e anatomopatológicos (grau ISUP da peça cirúrgica, margens cirúrgicas, extensão extracapsular tumoral e presença de linfonodos acometidos), de 177 pacientes submetidos a prostatectomia radical em serviço de uro-oncologia de junho/2010-maio/2018. Resultados: A recidiva bioquímica ocorreu em 44,1% dos casos no tempo de seguimento médio de 34,9 meses. A análise univariada demonstrou PSA inicial >9 ng/mL, toque retal alterado, classificação patológica ISUP 4 e 5, risco D’Amico alto e estagio clinico TNM T3 como fatores diretamente associados a recidiva bioquímica. As margens cirúrgicas foram positivas em 46,3%; em 47,7%, identificou-se extensão extraprostática tumoral. Linfonodos positivos em 10,9% e vesículas seminais comprometidas ocorreram em 21,8%. Conclusão: Fatores clinico-patológicos podem ser preditores de recidiva bioquímica. Nesses casos, foi identificado padrão clinico pré-tratamento supostamente mais agressivo em comparação a literatura em geral. Além disso, deve-se considerar a curva de aprendizado dos cirurgiões em formação no serviço, o que pode resultar em maiores taxas de margens cirúrgicas positivas.

Prognostic Factors for Overall Survival of Patients with Prostate Cancer in Kyadondo County, Uganda

Background

Prostate cancer is the second most common cancer among men globally. A few studies that have been done in Uganda on survival of patients with prostate cancer indicate that, the overall survival of patients with prostate cancer in Uganda is poor. The aim of this study was to determine the 3-year overall survival rate of a cohort of patients with prostate cancer residing in Kyadondo County who were diagnosed from 2012 to 2014. The secondary objective was to correlate the overall survival with the clinicopathological prognostic factors.

Materials and Methods

This was a retrospective cohort study which involved 136 patients who were diagnosed histologically with prostate cancer at the department of pathology between 2012 and 2014. The cases were registered at the Kampala cancer registry and followed up to 31^st December 2017. Data analysis was done using STATA version 12.0. The Kaplan-Meir curves were used for analysis of the 3-year overall survival rate. Hazard ratio (HR) and Log-rank test at 95% confidence interval under Cox-regression model were used to evaluate the effect of the covariates on the 3-year overall survival rate. p < 0.05 was considered statistically significant.

Results

More than half of the cases, 55.9% (n = 76) had Gleason score >8. Most of the patients, 67.7% (n = 92) had advanced disease at diagnosis. The 3-year overall survival rate was 67.6% with median survival of 36.5 months and range of 0-65 months. Clinical stage of the patients (HR = 1.65, p = 0.039), Gleason score (HR = 1.88, p = 0.008), and lymphovascular invasion (HR = 0.37, p = 0.002) were the independent predictors of the 3-year overall survival rate in this study. Conclusion. The 3-year overall survival of prostate cancer patients in Uganda is poor. Most of the patients with are diagnosed with advanced clinical stages (stage III and IV). The Gleason score, clinical stage and lymphovascular invasion can powerfully predict independently the overall survival of patients with prostate cancer. This implies that the Gleason score, clinical stage and lymphovascular invasion may be used to predict the overall survival of patients with prostate cancer even prior prostatectomy.

Factors determining biochemical recurrence in low-risk prostate cancer patients who underwent radical prostatectomy

OBJECTIVE

This study was conducted to research the factors determining biochemical recurrence (BCR) in low-risk localized prostate cancer patients who underwent radical prostatectomy (RP).

MATERIALS AND METHODS

We retrospectively analyzed the data of 504 patients who had undergone RP between 2003 and 2013 at our clinic. One hundred and fifty-two patients who underwent RP for low-risk prostate cancer were included in the study.

RESULTS

The mean follow-up period for patients was 58.7 (21-229) months. The mean age of the patients was 63.7±7.2 years (49-79). The mean prostate specific antigen (PSA) value was 5.25±4.22 ng/mL (3.58-9.45). The BCR rate after the operation was 25% (38/152). In the univariate analysis, recurrence determining factors were shown to include extracapsular involvement (ECI) (p=0.004), capsular invasion (CI) (p=0.001), age (p=0.014), and tumor size (p=0.006). However, only CI was found to be significant in multivariate analysis (p=0.001).

CONCLUSION

Capsular invasion is an independent risk factor in low-risk prostate cancer patients who underwent RP for BCR.