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Objetivo La linfadenectomía pélvica ampliada es el método más confiable para identificar compromiso ganglionar en cáncer de próstata, sin embargo, la morbilidad, el tiempo quirúrgico, el papel terapéutico y las complicaciones, han sido temas de debate. El objetivo del estudio fue describir las características clínicas y patológicas de acuerdo con la presentación de recaída bioquimíca de los pacientes con cáncer de próstata de bajo riesgo tratados con prostatectomía radical más linfadenectomía pélvica ampliada. Métodos Estudio descriptivo longitudinal retrospectivo en una cohorte de pacientes con cáncer de próstata de bajo riesgo tratados quirúrgicamente, entre enero 2006 hasta diciembre 2016. Se revisaron 210 historias clínicas, 178 cumplían los criterios de inclusión: PSA < 10 ng/mL; Gleason < 6, cT1­cT2a, revisión de las biopsias de próstata y procedimientos quirúrgicos realizados en la misma institución. Las variables a evaluar: porcentaje de compromiso tumoral, invasión linfovascular, concordancia de gleason, numero de ganglios resecados, ganglios positivos, densidad ganglionar, recaída bioquímica. Resultados 178 pacientes con: 64 años, 62% T1c, psa de 6,37, compromiso de biopsia 23%. El 47% estaban subestadificados por gleason, con un promedio de ganglios resecados de 21, el compromiso ganglionar se encontró en un 3%, los bordes positivos en un 34% y la recaída bioquímica en un 19%. De los 33 pacientes con recaída bioquímica, el 6% tenían ganglios positivos y el 79% tenían bordes positivos, comparado con los que no recayeron: el 1% tenían ganglios positivos y el 23% eran R1, mientras que la invasión linfovascular solo estuvo presente en el 6% vs el 1% sin recaída. El tiempo a la recaída fue de 26 meses. Conclusiones El compromiso ganglionar en cáncer de próstata es bajo, pero la subestadificación es alta. En el grupo de recaída bioquímica se observó que la mayoría de los pacientes presentaban bordes positivos y una subestadificacion del Gleason.

Objective Extended pelvic lymphadenectomy is the most reliable method to identify lymph node involvement in prostate cancer, however, the morbidity, surgical time, therapeutic role and complications have been debated. The objective of this study was to describe the clinical and pathological characteristics according to the presentation of biochemical relapse in patients with low-risk prostate cancer treated with radical prostatectomy and extended pelvic lymphadenectomy. Methods A retrospective longitudinal descriptive study in a cohort of patients with low-risk prostate cancer treated surgically, from January 2006 to December 2016. 210 clinical records were reviewed, 178 met the inclusion criteria: PSA <10 ng / mL; Gleason <6, cT1 - cT2a, review of prostate biopsies and surgical procedures performed in the same institution. The variables to be evaluated: percentage of tumor commitment, lymphovascular invasion, gleason score, number of resected nodes, positive lymph nodes, lymph node density, biochemical relapse. Results 178 patients with: 64 years, 62% T1c, psa of 6.37, commitment of biopsy 23%. 47% were understaged by gleason, with an average of 21 resected nodes, nodal involvement was found in 3%, positive edges in 34% and biochemical relapse in 19%. Of the 33 patients with biochemical relapse, 6% had positive lymph nodes and 79% had positive margins, compared with those who did not relapse: 1% had positive lymph nodes and 23% were R1, whereas lymphovascular invasion was only present in 6% vs 1% without relapse. The time to relapse was 26 months. Conclusions The lymph node involvement in prostate cancer is low, but sub-staging is high. Patients with biochemical relapse they had positive borders and a sub-staging of the Gleason

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OBJECTIVE: The aim of this study is to analyze the clinical and surgical features of patients who underwent robotic-assisted radical prostatectomy (RARP) at our institution, and the impact of the surgeon's experience in the oncological results related to pathological stage. MATERIAL AND METHODS: An analysis of 300 RARP consecutively performed by the same urologist was conducted. Patients were divided into 3 groups of 100 patients in chronological order, according to surgery date. All patients had organ-confined clinical stage. Variables which could impact in positive margins rates were analyzed. Finally, positive surgical margins (PSM) in regard to pathological stage and surgeon's experience were compared and analyzed. RESULTS: No significant differences were found in variables which could impact in PSM rates. The overall PSM rate was 21%, with 28% in the first group, 20% in the second, and 16% in the third (P = .108). Significant lineal decreasing tendency was observed (P = .024). In pT2 patients, the overall PSM rate was 16.6%, with 27%, 13.8%, and 7.3% in each group respectively (P = .009). A significant difference was found between group 1 and group 3 (P = .004). In pT3 patients, the surgeon's experience was not significantly associated with margin reductions with an overall PSM rate of 27.7% (28.2%, 28.6%, and 26.7% in each group respectively). CONCLUSIONS: Clinical and surgical features in our patients did not vary over time. We found a significant reduction of PSM related to surgeon's experience in pT2 patients. Contrariwise, the margin status remained stable despite increasing experience in pT3 patients.

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