RESUMO
PURPOSE: The Prostate Imaging Reporting and Data System (PI-RADS) score is standard of care for clinically significant prostate cancer (csPCa) diagnosis. The PRIMARY score (prostate-specific membrane antigen [PSMA]-positron emission tomography [PET]/CT) also has high diagnostic accuracy for csPCa. This study aimed to develop an easily calculated combined (P) score for csPCa detection (International Society of Urological Pathology [ISUP] ≥2) incorporating separately read PI-RADS and PRIMARY scores, with external validation. MATERIALS AND METHODS: Two datasets of men with suspected PCa, no prior biopsy, recent MRI and 68Ga-PSMA-11-PET/CT, and subsequent transperineal biopsy were evaluated. These included the development sample (n = 291, 56% csPCa) a prospective trial and the validation sample (n = 227, 67% csPCa) a multicenter retrospective database. Primary outcome was detection of csPCa (ISUP ≥2), with ISUP ≥ 3 cancer detection a secondary outcome. Score performance was evaluated by area under the curve, sensitivity, specificity, and decision curve analysis. RESULTS: The 5-point combined (P) score was developed in a prospective dataset. In the validation dataset, csPCa was identified in 0%, 20%, 52%, 96%, and 100% for P score 1 to 5. The area under the curve was 0.93 (95% CI: 0.90-0.96), higher than PI-RADS 0.89 (95% CI: 0.85-0.93, P = .039) and PRIMARY score alone 0.84 (95% CI: 0.79-0.89, P < .001). Splitting scores at 1/2 (negative) vs 3/4/5 (positive), P score sensitivity was 94% (95% CI: 89-97) compared to PI-RADS 89% (95% CI: 83-93) and PRIMARY score 86% (95% CI: 79-91). For ISUP ≥ 3, P score sensitivity was 99% (95% CI: 95-100) vs 94% (95% CI: 88-98) and 92% (95% CI: 85-97) for PI-RADS and PRIMARY scores respectively. A maximum standardized uptake value > 12 (P score 5) was ISUP ≥ 2 in all cases with 93% ISUP ≥ 3. CONCLUSIONS: The P score is easily calculated and improves accuracy for csPCa over both PI-RADS and PRIMARY scores. It should be considered when PSMA-PET is undertaken for diagnosis.
Assuntos
Imageamento por Ressonância Magnética , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Neoplasias da Próstata , Humanos , Masculino , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/patologia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Imageamento por Ressonância Magnética/métodos , Idoso , Pessoa de Meia-Idade , Estudos Retrospectivos , Estudos Prospectivos , Sistemas de Dados , Próstata/diagnóstico por imagem , Próstata/patologiaRESUMO
Purpose: This case series describes the experiences and outcomes of multiple Australian surgeons performing robotic-assisted bladder diverticulectomy (RABD), highlighting the procedural effectiveness and safety, for both benign and malignant indications for diverticulectomy. Methods: Outcomes were analyzed from 13 experienced Australian urologists who performed RABD between 2016 and 2023. Retrospective analysis was performed on prospectively collected data, which included patient demographics, diverticulum characteristics, surgical approaches, and post-operative outcomes. Surgical techniques included the extravesical and intravesical approaches, with the focus on maintaining oncological principles in cases of malignancy. Results: A total of 28 patients underwent RABD, with the majority being male and a mean age of 63.9 years. All surgeons utilized a four-port transperitoneal approach and opted for the extravesical dissection of the diverticular neck; one case utilized both an extravesical and a trans-diverticular approach. Functional outcomes demonstrated symptomatic resolution in patients with nonmalignant diverticula, whereas oncological outcomes indicated clear margins in 90% of malignant cases. The average length of the procedure was 106 minutes, with minimal blood loss and a mean hospital stay of 2.67 days. Early complications occurred in 14% with the majority Clavien-Dindo grade II. Conclusion: Robotic bladder diverticulectomy, predominantly via the transperitoneal extravesical approach, has emerged as a safe, effective, and reliable surgical intervention for both malignant and nonmalignant bladder diverticula. The consistent surgical approach and excellent outcomes demonstrated in this case series reinforce the procedure's potential as a safe option, even in the setting of malignancy within a diverticulum.