Do PHI and PHI density improve detection of clinically significant prostate cancer only in the PSA gray zone?

OBJECTIVES: Prostate health index (PHI) is a predictive biomarker of positive prostate biopsy. The majority of evidence refers to its use in the PSA gray zone (4-10 ng/mL) and negative digital rectal exam (DRE). We aim to evaluate and compare the predictive accuracy of PHI and PHI density (PHId) with PSA, percentage of free PSA and PSA density, in a wider range of patients for the detection of clinically significant prostate cancer (csPCa). METHODS: Multicenter prospective study that included patients suspicious of harboring prostate cancer. Non-probabilistic convenience sampling, where men who attended the urology consultation were tested for PHI before prostate biopsy. To evaluate and compare diagnostic accuracy AUC and decision curve analysis (DCA) were calculated. All these procedures were performed for the overall sample and the following subsamples: PSA < 4 ng/ml; PSA 4-10 ng/ml; PSA 4-10 ng/ml plus negative DRE and PSA > 10 ng/ml. RESULTS: Among the 559 men included, 194 (34.7%) were diagnosed of csPCa. PHI and PHId outperfomed PSA in all subgroups. PHI best diagnostic performance was found in PSA 4-10 ng/ml with negative DRE (sensitivity 93.33, NPV 96.04). Regarding AUC, significant differences were found between PHId and PSA in the subgroup of PSA 4-10 ng/ml, whatever DRE status. In DCA, PHI density shows the highest net benefit. CONCLUSIONS: PHI and PHId outperfom PSA in csPCa detection, not only in the PSA grey zone with negative DRE, but also in a wider range of PSA values. There is an urgent need of prospective studies to established a validated threshold and its incorporation in risk calculators.

Key areas in the learning curve for robotic urological surgery: a Spanish multicentre survey.

BACKGROUND: The number of robotic-assisted procedures offered in Spain is rapidly increasing despite a lack of consensus criteria for training and credentialling. OBJECTIVE: This national multicentre study was designed to analyze the different areas of the robotic urological surgery learning curve. MATERIAL AND METHODS: A questionnaire was sent to all 13 urology units in Spain with an active robotics programme requesting information on training and problems encountered. RESULTS: In most centres (n = 11, 84.6%), training programmes were animal-based; cadavers were used at only 2 (15.4%). Proctoring in initial procedures was practiced by 12 groups (92.3%). When initiating the robotics programme, the console was shared at 8 units (61.5%). Prior experience in open and/or laparoscopic surgery was reported by 10 of the groups (76.9%), and experience in open surgery only by 2 (15.4%) or robotic surgery alone by 1 (7.7%). The procedure with which the robotics programme was started in all 13 participating units was radical prostatectomy. The number of cases needed to complete the learning curve for this procedure was 20-25 cases according to 8 (61.5%) surgery teams. CONCLUSIONS: Up until March 26, 2010, 1,692 operations, mostly radical prostatectomies, were conducted using the da Vinci robot in our country.

How to build a robotic program.

OBJECTIVE: Advancements in the robotic surgical technology have revolutionized the standard of care for many surgical procedures. The purpose of this review is to focus on the different issues involved in developmental phase of starting a robotic program and to evaluate the important considerations in developing this program at a given healthcare institution. METHODS & RESULTS: Although every hospital might desire a robotic program, there are many requirements needed to uphold a successful and self-sustainable program in the current healthcare market. Patients' interest in robotic-assisted surgery has and continues to grow because of improved outcomes and decreased periods of hospitalization. Resulting market forces have created a solid foundation for the implementation of robotic surgery into surgical practice. A thorough market analysis, including that of competing entities and estimated surgical volume, is necessary prior to purchasing a robot. Another issue to be addressed is determining whether one has trained surgeons or the capability to recruit the appropriately trained surgeons to keep a robotics program afloat. Formally trained robotic surgeons have better patient outcomes and shorter operative times. An assessment of facilities and staff is also imperative prior to making such a substantial investment. Ultimately, after a well thought-out analysis, a decision must be made as to whether the institution can support and maintain a robotics program. CONCLUSIONS: Individual economic factors of local healthcare settings must be evaluated when planning for a new robotics program. The high cost of the robotic surgical platform is best offset with a large surgical volumen,interdisciplinary utilization of the technology may be the solution. A mature, experienced surgeon is integral to the success of a new robotics program. Define procedures to be performed, necessary training, staff involved,equipment, facilities, setting-up, economical resources and marketing are important issues to be teaken into account before acquiring a surgical robotic system.

ARTICULO SOLO EN INGLES. OBJETIVO: Los avances de la tecnología robótica quirúrgica han revolucionado el estándar de tratamiento en muchos procedimientos quirúrgicos. El objetivo de esta revisión está focalizado en los diferentes aspectos involucrados en la fase de desarrollo de inicio de un programa de robótica y en evaluar lasconsideraciones importantes para desarrollar este programa en un hospital determinado.MÉTODOS/RESULTADOS: Aunque todos los hospitales desearían tener un programa de cirugía robótica, son necesarios muchos requerimientos para mantener un programa de éxito y auto sostenible en el mercado de la salud actual. El interés de los pacientes por la cirugía asistida por robot ha aumentado y sigue creciendo debido a la mejora de los resultados y la disminución de los periodos de hospitalización. Las fuerzas de mercado resultantes han creado una base sólida para la implementación de la cirugía robótica en la práctica quirúrgica. Antes de la compra de un robot es necesario un análisis profundo del mercado, incluyendo las entidades que compiten y el volumen quirúrgico estimado. Otro aspecto a tratar es determinar si uno tiene cirujanos formados o la capacidad de reclutar los cirujanos apropiados ya formados para  mantener el programa de robótica a flote. Los cirujanos robóticos formados formalmente tienen mejores resultados en sus pacientes y tiempos de operación más cortos. También es imperativo un análisis de las instalaciones y el personal antes de hacer semejante inversión. Finalmente, después de un análisis bien pensado, se debe tomar la decisión de si la institución puede apoyar y mantener un programa robótico.CONCLUSIONES: Cuando se planea un nuevo programa de cirugía robótica se deben evaluar los factores económicos individuales del marco sanitario local. El alto coste de la plataforma de cirugía robótica está mejor compensada con un gran volumen quirúrgico y uso interdisciplinario de la tecnología. Un cirujano maduro, experimentado es parte integral del éxito de un nuevoprograma de cirugía robótica. Definir los procedimientos que se van a realizar, el entrenamiento necesario, el personal involucrado, el equipo, las nstalaciones, la puesta en marcha, los recursos económicos y el marketingson aspectos importantes a tener en cuenta antes de adquirir un sistema robótico quirúrgico.

[Prostatic high resolution micro-ultrasound (MUS) imaging.] / Ecografía de alta resolución prostática (microultrasonografía-ExactVuTM).

OBJECTIVE: Prostate cancer (PCa) diagnosis has improved with multiparametric magnetic resonance (mpMRI) and new more specific biomarkers. However, mpMRI has some limitations such as variability, long learning curve and high cost. More progress is needed in the PCa diagnosis scenario, and it is here where high resolution micro-ultrasound (MUS) imaging system emerge. MATERIAL AND METHODS: Retrospective study between February (2017-2018); including 96 patients with PCa suspicion, undergoing transrectal prostate biopsy guided by MUS. Procedure was performed by 2 urologists blinded to mpMRI results at first (92% available). PRI-MUS protocol was used to identify suspicious features. 2 core targeted biopsy of suspicious areas (PRIMUS >3) was completed first and then it was followed by a 12-core systematic biopsy and finally sampling of mpMRI targets if available. Data were collected reporting sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) to detect clinically significant PCa (csPCa) (Gleason score >7). RESULTS: Overall, MUS csPCa detection rate was 59.37%. 171 cores were registered, of them csPCa were distributed as follow: 1.2% PRI-MUS 1, 16.3% PRIMUS 2, 28% PRI-MUS 3, 39% PRI-MUS 4 and 15% PRI-MUS 5. Sensitivity in csPCa detection for PRI-MUS >3 was 82% with 93% NPV, but with low 39% specificity and 19% PPV. Comparing 79 patients with mpMRI available; sensitivity by area of MUS was 82% versus 30% of mpMRI, with 93% NPV versus 88%. Specificity and PPV were higher in mpMRI in comparison to MUS. CONCLUSIONS: Although this is a preliminary series, MUS is presented as an attractive imaging technique, cost-effective, easy to learn and with high efficacy in image- guided prostate biopsy. Overall PCa detection rate increases over conventional ultrasound; and offers high sensitivity and NPV in csPCa detection over mpMRI but with lower specificity.

OBJETIVO: El diagnóstico del cáncer de próstata (CaP) ha mejorado con la resonancia magnética multiparamétrica (RMmp) y nuevos biomarcadores más específicos. No obstante, la RMmp tiene unas limitaciones: variabilidad, larga curva de aprendizaje y coste elevado. Por ello se hacen necesarios más avances en el escenario diagnóstico, y es aquí donde irrumpen los microultrasonidos de alta resolución (MUS) 29 MHz.MATERIAL Y MÉTODOS: Entre Feb 2017-2018; 96 pacientes con sospecha de CaP; recibieron biopsia prostática transrectal guiada por MUS. Procedimiento realizado por 2 urólogos a los que se ocultó los resultados de la RMmp (disponible en 92%). Se empleó protocolo PRI-MUS; obteniendo 2 muestras de área sospechosa (PRIMUS >3) más biopsia sistemática. Se añadieron muestras adicionales de áreas PI-RADS >3. Se recogen datos de sensibilidad, especificidad y valor predictivo positivo (VPP) y negativo (VPN) para detectar CaP clínicamente significativo (CaPcs) (Gleason Score >7). RESULTADOS: La tasa de detección global de los MUS para CaPcs fue del 59,37%. Se registraron 171 cilindros positivos, de los cuales CaPcs fueron: 1,2% PRI-MUS 1, 16,3% PRI-MUS 2, 28% PRI-MUS 3, 39% PRI-MUS 4 y 15% PRI-MUS 5. La sensibilidad en la detección de CaPcs en PRI-MUS >3 fue del 82% con VPN 93%, pero con baja especificidad 39% y VPP del 19%. Comparando los 79 pacientes con RMmp; la sensibilidad por zona de los MUS fue del 82% frente al 30% de la RMmp, con un VPN del 93% frente al 88%. La especificidad y el VPP fueron superiores en la RMmp frente a MUS. CONCLUSIONES: Aunque la serie es preliminar, los MUS se presentan como una técnica de imagen coste- efectiva, sencilla de aprender y con alta eficacia en la biopsia prostática. La tasa de detección global de CaP duplica a la de los ultrasonidos convencionales; y ofrece alta sensibilidad y valor predictivo negativo en la detección de CaPcs frente a la RMmp.

[BCG therapy in NMIBC: How much and for how long?.] / Opciones terapeúticas tras fracaso de BCG.

Bladder cancer is the 9th most prevalent cancer in the world. It is divided into muscle invasive bladder cancer (MIBC) and non muscle invasive bladder cancer (NMIBC). Over 75% belong to the second group and it will be classified according to the risk of progression and recurrence. In high and intermediate risk tumors. There is indication for the use of bladder instillations with BCG as it reduces the number of recurrences and disease progression to MIBC. In spite of this, disease control is not possible in all cases and there could be recurrence or progression of the disease to MIBC. This article is a review of the therapeutic options of tumor recurrence after failure of BCG treatment.

[Current status of extracorporeal shock wave lithotripsy in urinary lithiasis.] / Estado actual de la litotricia extracorpórea por ondas de choque en la litiásis urinaria.

Over the last decade, urinary lithiasis' prevalence has dramatically increased due to diet and lifestyle changes, growing 10.6% and 7.1% in men and women respectively. Extracorporeal shock wave lithotripsy has lost relevance in current practice due to endoscopic device development and unpredictability of results. Instrument miniaturization is leading to an increase of the percutaneous approach of increasingly smaller stones, while most flexible ureteroscopes durability and digitalization has allowed urologists to address larger stones. So that, decision algorithm is now impossible to define, but what is clear is that ESWL has declined worldwide. Can it disappear as a urinary lithiasis treatment modality? If we don't improve appropriate candidate selection and optimize disintegration efficiency, guidelines are going to replace the more "boring" ESWL by popular and more attractive endoscopes. Shock wave technology has evolved in the last two decades, however lithotripsy fundamental principle has not changed. ESWL has passed the test of time and centers dedicated to stone treatment should have a lithotripter in order to offer an appropriate balance in different options for different clinical situations. New developments will be focused on improvements in location (in-line navigation systems; Vision track system) and automatic ultrasound location on a robotic arm; monitoring and stone fixation, implementation of different focal sizes with new acoustic lenses, multitask working stations that allow endourological approach, coupling control (avoiding microbubbles) and low cost devices for different applications. On the other hand, optimizing outcomes by: slower pulse rates, ramping strategies and patient selection with soft stones, short stone-skin distance, low BMI and favorable collecting system anatomy, allow us to achieve better outcomes in shock wave treatments. SWL still represents a unique non invasive method of stone disease treatment with no anesthesia and low complication rates; and a high proportion of stones could still be treated with shock waves and remains among patient's first options. This update objective has been to review the evolution, identify shock wave new developments and clarify their impact on our daily practice in urinary stones treatment.

[Robotic renal surgery: pyeloplasty]. / Cirugía renal robótica: pieloplastia.

The treatment of ureteropyelic junction (UPJ) obstruction offers a perfect sketch of the parallel evolution of the availability of technology and changes in surgical proceedings. From the open Anderson-Hynes pyeloplasty, passing through percutaneous or retrograde endopyelothomy with various instruments, to the laparoscopic approach, technology and human talent have found a field for development in this reconstructive procedure. Robotic surgery is young and starts to define its role in urology surgery. There are established procedures such as radical prostatectomy; it remains to be established what operations will benefit from the robotic technology, so results are under continuous evaluation. The non stopping advance of computer technology guarantees future achievements of robotic technology. The objective is to achieve that surgeons could perform difficult surgical procedures with a level of accuracy and clinical results that would be difficult to achieve with conventional methods. We analyze the technical features, results and comparative studies of the robotic pyeloplasty from the medical literature. Robotic surgery has demonstrated its usefulness in the performance of pyeloplasties, with good results in primary and secondary UPJ stenosis in children and adults, in various aetiologies. Robotics enables to diminish the difficulties of intracorporeal suture and the learning curve for surgeons without laparoscopic experience. Nevertheless, although initial clinical experience with robotic pyeloplasty is favourable, continuous evaluation of results is necessary to determine if the surgical procedure is as effective in the long-term as laparoscopic and open pyeloplasty.

[New position for laparoscopic pyeloplasty. Our experience]. / Nuevo posicionamiento para realizar la pieloplastia laparoscópica. Nuestra experiencia.

OBJECTIVES: To share our experience performing laparoscopic pyeloplasty and our contributions to this surgery. METHODS: Between March 2004 and January 2006 we have performed 12 laparoscopic pyeloplasties in 12 patients. We modified our technique as we found difficulties during operations. By the only modification of patient position we have achieved a significant improve in our technique. RESULTS: We describe how we performed the operation in the first cases and how we do it today, with the new position. We also describe the advantages observed. CONCLUSIONS: With our technique we achieve an important surgical time reduction, improvements in safety and reduction of surgical complications.

[Renal cirsoid aneurysm (congenital arteriovenous fistula): a rare cause of severe hematuria]. / Aneurisma cirsoide renal: una rara causa de hematuria severa.

OBJECTIVE: Congenital arteriovenous fistulas are an exceptional clinical feature. Although they are frequently asymptomatic, their presentation as severe hematuria pose an excellent diagnostic exercise and often immediate therapeutic action. METHODS/RESULTS: We report the case of a 75-year-old female patient presenting with severe hematuria producing anaemia, high blood pressure and congestive heart failure. Image tests revealed right ureteral-hydronephrosis with bladder blockage by blood clots. The endoscopic study (cystoscopy and ureterorenoscopy) alerted about the origin of the hematuria from the right kidney, finally requiring nephrectomy as definitive treatment. Pathology revealed the presence of a round formation with multiple vascular channels, arterial and venous, in the pyelocalicial submucosa, with focal epithelial erosion, compatible with congenital arteriovenous fistula. We review the diagnostic and therapeutic features in the literature. CONCLUSIONS: Renal congenital arteriovenous fistulas represent a diagnostic dilemma. They may present asymptomatic or condition clinical features derived from the shunt and high cardiac output (hypertensive cardiopathy and congestive heart failure) or from the erosion and acute hemorrhage into the urinary tract (severe renal hematuria). Treatment should be conservative with embolization or supraselective sclerosis. Nevertheless, in cases of big fistulas, post embolization revascularization, or hemodynamic instability nephrectomy is an excellent option.

[Concurrent tumors in a patient with giant hydronephrosis]. / Colisión tumoral en hidronefrosis gigante.

OBJECTIVES: Giant hydronephrosis, defined as the presence of a liquid volume over 1000 ml within the urinary collector system, is a rare clinical entity, the diagnosis of which is an excellent exercise because it lacks of a defined clinical presentation. METHODS/RESULTS: We report the case of a 66-year-old male under study for a suspicious digestive tumor due to a long lasting clinical picture with severe cachexia, asthenia, anemia, constipation, and abdominal mass. Radiological tests showed a great right hydronephrosis secondary to a culculus in the ureteral-pelvic junction. Simple nephrectomy was performed, evacuating 7800 ml of serous-hematic liquid from the pyelocalicial system. A histological diagnosis revealed the presence of multiple foci of transitional cell carcinoma and renal cell carcinoma associated. We review the diagnostic and therapeutic features in the literature. CONCLUSIONS: Giant hydronephrosis represents a diagnostic dilemma. It may present as an asymptomatic process, with clinical features of abdominal organs compression (bowel or urinary obstruction) or simulate abdominal tumors, massive ascites, or cystic retroperitoneal lesions. Simple nephrectomy is the treatment of choice in most cases, due to the advanced deterioration of the renal unit. Nevertheless, in some cases, in compromised patients, percutaneous drainage may be necessary as previous or definitive treatment to avoid changes in the hemodynamic balance secondary to the sudden abdominal decompression.

[Unusual retrovesical cystic lesion: appendiceal mucocele]. / Lesión quística retrovesical inusual: mucocele apendicular.

OBJECTIVE: Retrovesical cystic lesions are uncommon, although its incidence is growing due to the use of current diagnostic techniques. Its clinical features are unspecific and can mimic other conditions of the lower urinary tract making the differential diagnosis of this disease entity is difficult. A case of appendiceal mucocele, an unusual retrovesical lesion, is presented. METHODS/RESULTS: A 9 x 14 cm right retrovesical cystic lesion suggestive of a seminal vesicle cyst was detected in a 57-year-old patient with polyalkyuria. The patient was symptomatic, therefore surgical exploration was performed and the lesion was resected. The histological analysis of the surgical specimen demonstrated an appendiceal mucocele with no signs of atypia. The literature is reviewed, with special reference to the diagnostic and therapeutic aspects of this lesion. CONCLUSIONS: We underscore the need to utilize the diagnostic armamentarium (transrectal US, CT, MRI, deferens vesiculography, urethrocystoscopy, colonoscopy, opaque enema, IVP, etc.) to identify retrovesical cystic lesions. Preoperative diagnosis is necessary in appendiceal mucocele to avoid rupture during the surgical procedure and prevent peritoneal pseudomyxoma. Occasionally, however, the definitive diagnosis of these retrovesical lesions can be made only by punction biopsy or surgical exploration.

[Penile incarceration by multiple metal rings]. / Incarceración peneana por múltiples anillos metálicos.

OBJECTIVE: Penile incarceration is an infrequent clinical reality. Diagnosis is evident in most cases, and the challenges are to find the best way to retrieve the constrictive ring and repair the damage. Nevertheless, this event being curious has motivated us to report it. METHODS AND RESULTS: We report the case of a 48 year old patient victim of a "joke" resulting in a 13 day penile incarceration produced by 7 double metallic rings, 24 mm in internal diameter and 4 mm wide, which required section and extraction of the rings as well as wide tissue debridement and posterior plastic reconstruction using partial thickness cutaneous grafts. We review diagnostic an therapeutic features from the literature. CONCLUSIONS: Penile incarceration should be considered an emergency, so that the earlier the constrictive object is retrieved the lower the risk for complications secondary to penile devascularization, urinary retention and urethral damage. We emphasise the need to perform retrograde urethrography and suprapubic cystostomy if urethral lesion is suspected, a cutaneous vascular evaluation with doppler ultrasound or fluorescein test and the opportunity of cutaneous grafts to solve tissue lesion.