The Management of Patients Diagnosed with Incidental Prostate Cancer: Narrative Review

Incidental prostate carcinoma after single-port robot-assisted simple prostatectomy: a multi-institutional report (SPARC)

BACKGROUND

Single-port robot-assisted simple prostatectomy is a minimally invasive alternative for patients with large benign prostatic hyperplasia with severe symptoms and/or failure of medical treatment. In recent literature, the rate of incidental prostate cancer after simple prostatectomy ranges from 1.8% to 13.0%. Our objective is to report the rate of incidental prostate cancer after single-port robot-assisted simple prostatectomy and to compare our findings to other approaches.

METHODS

A Single-Port Advanced Research Consortium [SPARC] multi-institutional retrospective analysis of all initial consecutive single-port robot-assisted simple prostatectomy cases performed from 2019 to 2023 by eleven surgeons from six centers. Our primary outcome was the rate of incidental prostate cancer in adenoma specimens. We used descriptive statistics to analyze the data.

RESULTS

A total of 235 cases were performed successfully without conversions or additional ports. Eleven patients (4.6%) were found to have incidental prostate cancer on pathological analysis. The median percentage of tissue involved by the tumor was 5%. The overall rate of clinically significant prostate cancer was 2.1%. Most cases were Gleason Grade Group 1 (55%). Those with Grade Group ≤3 were subsequently managed with active surveillance with a median follow-up of 17 months. A patient with Gleason Grade Group 4 underwent an uncomplicated multi-port robot-assisted radical prostatectomy with satisfactory functional and oncological outcomes.

CONCLUSIONS

Initial multi-institutional experience with single-port robot-assisted simple prostatectomy showed an incidental prostate cancer rate of 4.6%, comparable to MP, laparoscopic, and open techniques.

Prevalence and potential predictors of incidental prostate Cancer in patients undergoing surgery for Benign Prostatic obstruction: a retrospective study in the MRI era

PURPOSE

Despite advancements in prostate multiparametric magnetic resonance imaging (mpMRI) and fusion biopsy (FB), the management of incidental prostate cancer (IPCa) after surgery for benign prostatic obstruction (BPO) remains unclear. The aim of this retrospective study is to determine the prevalence of IPCa in our cohort and identify potential predictors for its occurrence.

METHODS

We enrolled patients underwent TURP or simple prostatectomy for BPO at our high-volume center between January 2020-December 2022. Data on age, pre-operative total PSA (tPSA) and PSA density (PSAd) levels, prostate volume, previous MRI, biopsies, specimen weight, rates of positive tissue slices, ISUP score and three-month tPSA were collected.

RESULTS

Of 454 patients with negative digital rectal examination who underwent BPO surgery, 74 patients (16.3%) were found to have IPCa. Of these, 33 patients (44.6%) had undergone previous mpMRI. Among the patients who had mpMRI, 23 had negative mpMRI results for suspected prostate cancer, while 10 had positive mpMRI findings (PIRADS ≥ 3) but no evidence of tumor upon FB. KW analysis indicates that PSAd was statistically associated with higher ISUP score, while at univariable regression analysis negative mpMRI (p = 0.03) was the only potential predictor for IPCa.

CONCLUSIONS

Among the ISUP groups, PSAd showed a correlation with the tumor, while negative mpMRI was protective against clinically significant PCa. In the era of mpMRI and FB, the IPCa rates found at our center is higher than reported in existing literature and if it were confirmed with further studies, maybe there is a need for expansion in urology guidelines.

Survival benefit of radical prostatectomy in patients with advanced TURP-diagnosed prostate cancer: a population-based real-world study

OBJECTIVES

A considerable number of patients are diagnosed with prostate cancer (PCa) by transurethral resection of the prostate (TURP). We aimed to evaluate whether radical prostatectomy (RP) brings survival benefits for these patients, especially in the elderly with advanced PCa.

PATIENTS AND METHODS

We used the Surveillance, Epidemiology, and End Results (SEER) database to obtain PCa cases diagnosed with TURP. After the propensity matching score (PSM) for case matching, univariate, multivariate, and subgroup analyses were performed to investigate whether RP impacts the survival benefit.

RESULTS

4,677 cases diagnosed with PCa by TURP from 2010 to 2019 were obtained, including 1,313 RP patients and 3,364 patients with no RP (nRP). 9.6% of RP patients had advanced PCa. With or without PSM, cancer-specific mortality (CSM) and overall mortality (OM) were significantly reduced in the RP patients compared to the nRP patients, even for older (> 75 ys.) patients with advanced stages (all p < 0.05). Except for RP, younger age (≤ 75 ys.), being married, and earlier stage (localized) contributed to a significant reduction of CSM risk (all p < 0.05). These survival benefits had no significant differences among patients of different ages, married or single, and at different stages (all p for interaction > 0.05).

CONCLUSIONS

Based on this retrospective population-matched study, we first found that in patients diagnosed with PCa by TURP, RP treatment may lead to a survival benefit, especially a reduction in CSM, even in old aged patients (> 75 ys.) with advanced PCa.

Incidental prostate cancer after holmium laser enucleation of the prostate: Critical analysis of independent risk factors and impact on surgical outcomes

Objectives

The objectives of this study are to evaluate the impact of incidental prostate cancer (iPCa) and its different grade group (GG) on the surgical outcomes of holmium laser enucleation of the prostate (HoLEP) and, furthermore, to assess the independent risk factors associated with the detection of iPCa.

Patients or materials and Methods

A retrospective chart review was conducted at a single institution for HoLEP cases that were performed between 2017 and 2022. Patients with a preoperative diagnosis of prostate cancer and those without baseline prostate-specific antigen (PSA) levels within 1 year were excluded. Four hundred seventeen patients were divided into three groups: benign prostatic hyperplasia-377; clinically insignificant (GG 1)-29; and clinically significant prostate cancer (GG 2-5)-11. The preoperative parameters analysed included age, body mass index, race/ethnicity, use of 5-alpha-reductase inhibitors, PSA, prostate size, PSA density, and history of negative prostate biopsy. To evaluate the association between clinical and demographic variables, a multivariable-adjusted logistic regression analysis was performed. We also assessed intraoperative and post-operative outcomes among these three groups.

Results

A total of 417 patients were analysed; 40 (9.6%) patients had iPCa, of which 29 (72.5%) and 11 (27.5%) were clinically nonsignificant and significant prostate cancer, respectively. Of all the demographic and preoperative variables analysed, hypertension was significantly associated with overall prostate cancer diagnosis (p < 0.05), and no other variable including patient age, preoperative PSA, PSA density, prostate size, or prior prostate biopsy were associated with increased risk of overall prostate cancer or clinically significant prostate cancer diagnosis. Most cases of iPCa were GG1, and 34 (85%) were managed with active surveillance.

Conclusion

The rate of iPCa after HoLEP was 9.6%, with most cases being GG 1 (72.5%) and managed through active surveillance. Age, prostate size, baseline PSA, and prior negative prostate biopsies were not associated with increased risk of iPCa.

Incidence and associated factors for incidental prostate cancer among patients who underwent surgery for benign prostatic hyperplasia: first report from Somalia

BACKGROUND

The incidence rate of incidental prostate cancer (IPC) differs significantly among the reported studies in the relevant literature. There is a scarcity of studies regarding IPC reported from Sub-Saharan African Countries, including Somalia. The present is the first study that evaluates the incidence and associated factors for IPC among patients who had surgery for benign prostatic hyperplasia at a tertiary hospital in Somalia.

METHOD

This retrospective study reviewed the data of 538 patients with benign prostate hyperplasia, 464 patients who underwent transurethral resection of the prostate (TURP), and 74 patients with open prostatectomy (OP) over 5 years. A binary logistic regression model was used to investigate the association between perioperative factors such as age, prostate volume, total prostate-specific antigen (TPSA) levels, type of surgery, specimen weight, and the finding of IPC.

RESULTS

IPC was detected in 17.6%, 18.3% of TURP, and 13.5% of OP patients (p = 0.002). The mean age of the patients was 71.82 ± 7.4; IPC patients had a significantly higher mean age than the BPH group (74 ± 10.9 vs. 71.3 ± 10.8, p < 0.001). Sixty-two percent of the patients were T1b, while 57.8% had ISUP grade groups 1 and 2. Patients with T1a had significantly higher International Society of Urological Pathology (ISUP) grades 1 and 2 than those with T1b (69.4% in T1a vs. 50.8% in T1b, p < 0.001). Increased age, higher TPSA levels, low prostate volume, and specimen weight were independently associated with the finding of incidental prostate carcinoma (OR 1.978, 95% CI 0.95-1.60, P < 0.04; OR 1.839, 95% CI 0.99-2.02, P < 0.001; OR 1.457, 95% CI 0.7102.99, P < 0.001, OR 0.989, 95% CI 1.07-2.94, P = 0.01). IPC was most commonly managed by active surveillance (54.7%), followed by androgen deprivation therapy in 28.4%. The overall survival rate for a 5-year follow-up in the entire cohort was 79%. The cancer-specific mortality was 8.4%.

CONCLUSION

The study findings revealed a higher incidence and cancer-specific mortality rate of incidental prostate carcinoma. T1b stage, higher ISUP grade, older age, and higher preoperative TPSA were significantly associated with the overall mortality and cancer-specific mortality rate. More than half of the cases were managed by active surveillance, and it is a safe management strategy, particularly in low-income countries like Somalia.

Holmium laser enucleation of the prostate in men on active surveillance for prostate cancer with refractory lower urinary tract symptoms secondary to enlarged prostates

INTRODUCTION

The surgical treatment of men with lower urinary tract symptoms (LUTS) and significantly enlarged symptomatic prostates on active surveillance (AS) for low-risk prostate cancer (PCa) is not well defined. We report our single-institution initial experience with holmium laser enucleation of the prostate (HoLEP) for LUTS in men with low-risk PCa being managed with AS.

MATERIALS AND METHODS

Men on AS who underwent HoLEP between 2013 and 2019 were identified. Data regarding preoperative cancer workup, prostate-specific antigen (PSA), perioperative outcomes, and voiding parameters were analyzed. Postoperative surveillance for PCa including PSA nadir, prostate magnetic resonance imaging, prostate biopsy (PBx), and PSA at last follow-up were evaluated.

RESULTS

Twenty men met the inclusion criteria. Preoperative mean max flow 7.9 ml/s, median postvoid residual 101 cc, and mean transrectal ultrasound prostate size 99 cc. Patients had a median adjusted preoperative PSA of 8.5 (interquartile range [IQR]: 4.8-13.2) ng/ml. Mean resected tissue weight was 65.5 g with improved postoperative flow rate and significantly decreased residual. A total of 5/20 men had PCa in the specimen (all Gleason Grade Group 1). The median postoperative PSA nadir was 1.2 (IQR: 0.5-1.8) ng/ml at median of 5 months. At the last follow-up (median 18.5 months, IQR: 10.5-37.8), the median postoperative PSA was 1.4 (IQR: 0.63-2.48) ng/ml. Nine men underwent postoperative multiparametric magnetic resonance imaging (mpMRI) with the identification of a new prostate imaging reporting and data system 5 lesion in one patient who underwent negative fusion biopsy. Five men underwent post-HoLEP PBx with progression in two patients, who both successfully underwent radical prostatectomy.

CONCLUSIONS

Men on AS for low-risk PCa can safely undergo HoLEP with significantly improved voiding parameters. Postoperative monitoring with PSA, mpMRI, and PBx can detect disease progression requiring definitive treatment. Further research is needed to optimize surveillance strategies and long-term cancer-specific outcomes.

[Contemporary surgical management of benign prostatic obstruction in Germany : A population-wide study based on German hospital quality report data from 2006 to 2019]

Hintergrund

Die operative Therapie des benignen Prostatatsyndroms (BPS) hat in den letzten Jahren an Diversität gewonnen.

Ziel der Arbeit

Ziel dieser Studie ist die Darstellung aktueller Therapietrends sowie der Versorgungssituation in Deutschland.

Material und Methoden

Auf Basis der Qualitätsberichte der Krankenhäuser wurden mithilfe der Onlineplattform reimbursement.INFO Diagnose- wie Eingriffszahlen erhoben. Für die benigne Prostatahyperplasie (BPH) wurden die ICD-Codes N40 und D29.1 ausgewertet. Die Prozeduren wurden mittels der OPS-Codes 5‑600.0, 5‑601, 5‑603, 5‑609.4 und 5‑609.8 inklusive Subcodierungen extrahiert. Es erfolgten eine deskriptive Darstellung, Trend- und Korrelationsanalysen.

Ergebnisse

Insgesamt wurden 2019 83.687 BPS-Operationen in 473 urologischen Fachabteilungen durchgeführt. Am häufigsten wurde die transurethrale Prostataresektion (TURP; 71,7 %) angewendet. Die Holmiumlaserenukleation (HoLEP; 9,5 %) bzw. die chirurgische Adenomektomie (5,6 %) waren das zweit- bzw. dritthäufigste Verfahren. Seltener wurden Thuliumlaserenukleation (ThuLEP; 3,1 %), Laservaporisation (2,9 %) und elektrische Vaporisation (2,8 %) durchgeführt. Alle weiteren Verfahren machten jeweils < 1 % aus. HoLEP, ThuLEP und elektrische Vaporisation erlebten seit 2006 eine stetige Zunahme der Eingriffszahlen (HoLEP: +42,42 %/Jahr; p < 0,001, ThuLEP: +20,6 %/Jahr, p = 0,99; elektrische Vaporisation: +43,42 %/Jahr, p < 0,001), während die chirurgische Adenomektomie abnahm (−1,66 %/Jahr, p < 0,001). Die Krankenhausverweildauer lag 2019 bei mittleren 5,1 ± 0,1 Tagen.

Schlussfolgerung

Die TURP bleibt das am häufigsten durchgeführte Operationsverfahren. Während, insbesondere in Zentren, die Lasertherapien zunehmen, geht die chirurgische Adenomektomie zurück.

Zusatzmaterial online

Die Online Version dieses Artikels (10.1007/s00120-022-01777-9) enthält weitere Tabellen und Abbildungen zur Entwicklung der Eingriffszahlen für die chirurgische Adenomresektion, Urologische Fachabteilungen mit den höchsten Eingriffszahlen, Entwicklung der Eingriffe TURP, chirurgische Adenomektomie, HoLEP und ThuLEP in den 5 Häusern mit den meisten BPS-Eingriffen und zur Deutschlandweiten Verteilung der BPH-Diagnosen.

Incidental prostate cancer after holmium laser enucleation of the prostate-A narrative review

Prostate cancer can be detected incidentally after surgical therapy for benign prostatic obstruction such as holmium laser enucleation of the prostate (HoLEP), thus called incidental prostate cancer (iPCa). We aimed to review the studies on iPCa detected after HoLEP and investigate its prevalence. A detailed search of original articles was conducted via the PubMed-MEDLINE, Web of Science, Wiley Online Library and Cochrane Library databases in the last 10 years up to 1 May 2021 with the following search string solely or in combination: "prostate cancer", "prostate carcinoma", "holmium laser enucleation of the prostate" and "HoLEP". We identified 19 articles to include in our analysis and divided them into six main categories: HoLEP versus open prostatectomy and/or transurethral resection of the prostate in terms of iPCa, oncological and functional outcomes, the role of imaging modalities in detecting iPCa, predictive factors of iPCa, the role of prostate-specific antigen kinetics in detecting iPCa and the management of iPCa after HoLEP. We found that the iPCa after HoLEP rate ranges from 5.64% to 23.3%. Functional and oncological outcomes were reported to be encouraging. Oncological treatment options are available in a wide range.

Oligometastatic Prostate Adenocarcinoma. Clinical-Pathologic Study of a Histologically Under-Recognized Prostate Cancer

The clinical parameters and the histological and immunohistochemical findings of a prospective protocolized series of 27 prostate carcinoma patients with oligometastatic disease followed homogeneously were analyzed. Lymph nodes (81.5%) and bones (18.5%) were the only metastatic sites. Local control after metastatic directed treatment was achieved in 22 (81.5%) patients. A total of 8 (29.6%) patients developed castration-resistant prostate cancer. Seventeen (63%) patients presented with non-organ confined disease. The Gleason index 8-10 was the most frequently observed (12 cases, 44.4%) combined grade. Positive immunostainings were detected with androgen receptor (100%), PGP 9.5 (74%), ERG (40.7%), chromogranin A (29.6%), and synaptophysin (18.5%) antibodies. The Ki-67 index value > 5% was observed in 15% of the cases. L1CAM immunostaining was negative in all cases. Fisher exact test showed that successful local control of metastases was associated to mild inflammation, organ confined disease, Ki-67 index < 5%, and Gleason index 3 + 3. A castration resistant status was associated with severe inflammation, atrophy, a Gleason index higher than 3 + 3, Ki-67 index ≥ 5%, and positive PGP 9.5, chromogranin A, and synaptophysin immunostainings. In conclusion, oligometastatic prostate adenocarcinoma does not have a specific clinical-pathologic profile. However, some histologic and immunohistochemical parameters of routine use may help with making therapeutic decisions.

Informative value of histological assessment of tissue acquired during aquablation of the prostate

PURPOSE

To determine the histological validity of the tissue acquired during aquablation of the prostate.

PATIENTS AND METHODS

Prostatic tissue of 12 patients that consecutively underwent aquablation for benign prostatic enlargement was systematically examined. Histological examination was performed by two experienced uropathologists using a digital slide scanner and slide viewer software (Pannoramic 250 and Case Viewer 2.3, 3D Histech, Hungary). The surface areas of the assessable glands were examined and set in relation to the total surface area of the material available for histology and to the patient's total prostate volume. Examinations were performed analogously in ten consecutive patients undergoing transurethral resection of the prostate (TURP) to facilitate interpretation of the results. Data were analyzed using descriptive statistics.

RESULTS

A median of 4.06% (range 1.43-7.5%) of the preoperative total prostate volume (median 64.5 ml (range 40-80 ml)) was obtained for histological examination by aquablation. Due to severe mechanical destruction and fragmentation, only a proportion of 0.43% (0.06-1.79%) of this tissue represented histologically assessable glands. Therefore, roughly 0.017% of the total prostatic volume was available for a reliable histological examination. In comparison, 32.5% (6.67-37.5%) of the total prostate volume was removed by TURP and 22.86% (7.45-40.57%) of this tissue represented informative prostatic glands, corresponding to 7.43% of the total prostate volume.

CONCLUSION

Histological significance of the tissue obtained by aquablation of the prostate is very limited. Costs and effort of the histological examination must, therefore, be weighed critically against the limited informative value.