Prostatic artery embolisation versus medical treatment in patients with benign prostatic hyperplasia (PARTEM): a randomised, multicentre, open-label, phase 3, superiority trial.

Background: Prostatic artery embolisation (PAE) is a minimally invasive treatment of symptomatic benign prostatic hyperplasia (BPH). Our aim was to compare patient's symptoms improvement after PAE and medical treatment. Methods: A randomised, open-label, superiority trial was set in 10 French hospitals. Patients with bothersome lower urinary tract symptoms (LUTS) defined by International Prostatic Symptom Score (IPSS) > 11 and quality of life (QoL) > 3, and BPH ≥50 ml resistant to alpha-blocker monotherapy were randomly assigned (1:1) to PAE or Combined Therapy ([CT], oral dutasteride 0.5 mg/tamsulosin hydrochloride 0.4 mg per day). Randomisation was stratified by centre, IPSS and prostate volume with a minimisation procedure. The primary outcome was the 9-month IPSS change. Primary and safety analysis were done according to the intention-to-treat (ITT) principle among patients with an evaluable primary outcome. ClinicalTrials.gov Identifier: NCT02869971. Findings: Ninety patients were randomised from September 2016 to February 2020, and 44 and 43 patients assessed for primary endpoint in PAE and CT groups, respectively. The 9-month change of IPSS was -10.0 (95% confidence interval [CI]: -11.8 to -8.3) and -5.7 (95% CI: -7.5 to -3.8) in the PAE and CT groups, respectively. This reduction was significantly greater in the PAE group than in the CT group (-4.4 [95% CI: -6.9 to -1.9], p = 0.0008). The IIEF-15 score change was 8.2 (95% CI: 2.9-13.5) and -2.8 (95% CI: -8.4 to 2.8) in the PAE and CT groups, respectively. No treatment-related AE or hospitalisation was noticed. After 9 months, 5 and 18 patients had invasive prostate re-treatment in the PAE and CT group, respectively. Interpretation: In patients with BPH ≥50 ml and bothersome LUTS resistant to alpha-blocker monotherapy, PAE provides more urinary and sexual symptoms benefit than CT up to 24 months. Funding: French Ministry of Health and a complementary grant from Merit Medical.

Testicular impairment in Primary Adrenal Insufficiency caused by Nicotinamide Nucleotide Transhydrogenase (NNT) deficiency - a case report: implication of oxidative stress and importance of fertility preservation.

INTRODUCTION: Nicotinamide nucleotide transhydrogenase (NNT) gene deficiency has recently been shown to be involved in Primary Adrenal Insufficiency (PAI). NNT encodes an inner mitochondrial membrane protein that produces large amounts of NADPH. NADPH is used in several biosynthesis pathways and the oxidoreduction of free radicals by the glutathione and thioredoxin systems in mitochondria. Patients with PAI due to NNT deficiency may also exhibit extra-adrenal manifestations, usually including gonadal impairment. CASE REPORT: We present the case of a 35-year-old patient referred to our center for primary infertility with non-obstructive azoospermia, in a context of PAI and obesity. PAI genetic exploration carried out at the age of thirty revealed NNT deficiency due to the presence of two deleterious mutations (one on each allele) in the NNT gene. Scrotal ultrasound revealed a right Testicular Adrenal Rest Tumor (TART). Intensification of glucocorticoid therapy over the course of 8 months failed to reduce the TART volume or improve sperm production and endocrine function. No spermatozoa were found after surgical exploration of both testes, and subsequent histopathological analysis revealed bilateral Sertoli cell-only syndrome. A retrospective review of the hypothalamic-pituitary-gonadic axis hormonal assessment over 20 years showed progressive impairment of testicular function, accelerated during adulthood, leading to hypergonadotropic hypogonadism and non-obstructive azoospermia when the patient reached his thirties, while the PAI remained controlled over the same period. CONCLUSION: This case report provides, for the first time, direct evidence of complete germ line loss in an azoospermic man with NNT deficiency. Additional data further support the hypothesis of a determinant role of oxidative cellular damage due to reactive oxygen species (ROS) imbalance in the severe gonadal impairment observed in this NNT-deficient patient. Early and regular evaluation of gonadal function should be performed in patients with PAI, especially with NNT deficiency, as soon as the patients reach puberty. Fertility preservation options should then be provided in early adulthood for these patients.

RéSUMé: INTRODUCTION: Le gène Nicotinamide Nucleotide Transhydrogenase (NNT) a été récemment impliqué dans l'Insuffisance Surrénalienne Primaire (ISP). Il code pour une protéine de la membrane mitochondriale interne qui produit de fortes quantités de NADPH. Le NADPH est utilisé par plusieurs voies de biosynthèse et dans l'oxydo-réduction de radicaux libres par les voies de signalisation impliquant le glutathion et la thioredoxine dans la mitochondrie. Les patients avec une ISP, en lien avec un déficit du gène NNT, peuvent également présenter des manifestations extra-surrénaliennes, dont une altération gonadique. CAS CLINIQUE: Nous présentons le cas clinique d'un homme de 35 ans adressé à notre centre d'Assistance Médicale à la Procréation pour infertilité primaire avec azoospermie non obstructive, dans un contexte d'ISP et d'obésité. L'exploration génétique effectuée à l'âge de 30 ans a identifié un déficit complet de la protéine NNT dû à la présence de deux mutations hétérozygotes (une sur chaque allèle), délétères. L'échographie scrotale a montré une tumeur testiculaire d'origine surrénalienne à droite. L'intensification du traitement par glucocorticoides pendant 8 mois n'a pas réduit le volume de la tumeur ni amélioré la production spermatique ou la fonction testiculaire endocrine. Aucun spermatozoïde n'a été retrouvé après exploration chirurgicale testiculaire bilatérale, en lien avec un syndrome de Cellules de Sertoli Seules. L'étude rétrospective de l'axe hypothalamo-hypophysaire-gonadique monte une altération progressive de la fonction testiculaire, accélérée à l'âge adulte, aboutissant à un hypogonadisme hypergonadotrope et une azoospermie non-obstructive à 30 ans, alors que l'ISP était contrôlée pendant cette période. CONCLUSION: Ce cas clinique met en évidence pour la première fois une disparition complète de la lignée germinale chez un patient avec un déficit en NNT. Il avance des arguments en faveur de l'hypothèse d'un rôle déterminant des dommages cellulaires, dus à un excès de radicaux oxygénés dans cette atteinte régulière de la fonction gonadique. Cette dernière devrait être suivie à partir de la puberté chez les patients ISP et plus particulièrement ceux ayant un déficit en NNT. Une préservation de la fertilité pourrait leur être proposée lorsqu'ils deviennent adultes.

Long-term outcomes of prostate artery embolization for acute urinary retention: An analysis of 88 patients.

PURPOSE: The purpose of this study was to assess long-term outcome of prostate artery embolization (PAE) in patients presenting with acute urinary retention related to benign prostatic hyperplasia. MATERIALS AND METHODS: All consecutive patients who underwent PAE for acute urinary retention due to benign prostatic hyperplasia from August 2011 to December 2021 in a single institution were retrospectively included. There were 88 men with a mean age of 72 ± 12 (standard deviation [SD]) years (range: 42-99 years). Patients underwent a first attempt of catheter removal two weeks after PAE. Clinical success was defined as the absence of acute urinary retention recurrence. Correlations between long-term clinical success and patient variables or bilateral PAE were searched for using Spearman correlation test. Catheter-free survival was assessed using Kaplan-Meier analysis. RESULTS: Successful catheter removal in the month following PAE was performed in 72 (72/88; 82%) patients and 16 (16/88; 18%) patients had immediate recurrence. Clinical success persisted for 58 (58/88; 66%) patients at long-term follow-up (mean follow-up: 19.5 months ± 16.5 [SD]; range: 2-74 months). Recurrence occurred at a mean of 16.2 months ± 12.2 (SD) (range: 1.5-43 months) post-PAE. Overall, 21 (21/88; 24%) patients of the cohort underwent prostatic surgery, at a mean of 10.4 months ± 12.2 (SD) (range: 1.2-42.4 months) from initial PAE. No correlations between patients variables or bilateral PAE and long-term clinical success were identified. Kaplan-Meier analysis showed a three-year catheter free probability of 60%. CONCLUSION: PAE is a valuable technique for acute urinary retention related to benign prostatic hyperplasia, with a long-term success rate of 66%. However acute urinary retention relapse affects 15% of patients.

Efficacy and safety of prostate artery embolization for patients with lower urinary tract symptoms and indwelling urinary catheter: A retrospective multicenter study.

PURPOSE: The purpose of this multicenter study was to evaluate the clinical success at three months of prostate artery embolization (PAE), assess PAE safety in centers with various experiences and identify factors associated with PAE success. PATIENTS AND METHODS: This multicenter, retrospective study included patients who underwent PAE for lower urinary tract symptoms (LUTS) including those with indwelling urinary catheter. PAE clinical success was defined as either 25% improvement of the International Prostate Symptom Score (IPSS) or 1-point improvement of quality of life (QoL) score, or catheter removal at three months. Multivariable analyses were performed using a logistic regression adjusted on patient variables, technical parameters and center experience in PAE. RESULTS: A total of 383 men (mean age, 68.4 ± 9.7 [standard deviation] years; range: 46-94) with LUTS, including 99 (25.8%) patients with indwelling urinary catheter, were included in seven centers from January 2017 to March 2019. Five patients reported major complications (1.3%), three (0.8%) penile ulceration, three (0.8%) acute urinary retention, one (0.3%) prostatic abscess, and 56 (14.6%) minor complications. Follow up data were available for 271 patients (center 1: n = 159; other centers: n = 112). Clinical success was reported in 232 patients (85.6%). In multivariable analyses, presence of cardiovascular comorbidities (diabetes, stroke history, myocardial infarction and lower limb artery disease) was the single independent variable inversely associated with PAE clinical success (odds ratio = 0.396; 95% confidence interval: 0.17-0.91; P = 0.029). There was no center effect. CONCLUSION: Our results show that PAE is safe and effective in centers with various PAE experiences. Cardiovascular comorbidity is the single independent variable associated with PAE failure.

Transcriptional profiling of ß-2M-SPα-6+THY1+ spermatogonial stem cells in human spermatogenesis.

Male infertility is responsible for approximately half of all cases of reproductive issues. Spermatogenesis originates in a small pool of spermatogonial stem cells (SSCs), which are of interest for therapy of infertility but remain not well defined in humans. Using multiparametric analysis of the side population (SP) phenotype and the α-6 integrin, THY1, and ß-2 microglobulin cell markers, we identified a population of human primitive undifferentiated spermatogonia with the phenotype ß-2 microglobulin (ß-2M)-SPα-6+THY1+, which is highly enriched in stem cells. By analyzing the expression signatures of this SSC-enriched population along with other germinal progenitors, we established an exhaustive transcriptome of human spermatogenesis. Transcriptome profiling of the human ß-2M-SPα-6+THY1+ population and comparison with the profile of mouse undifferentiated spermatogonia provide insights into the molecular networks and key transcriptional regulators regulating human SSCs, including the basic-helix-loop-helix (bHLH) transcriptional repressor HES1, which we show to be implicated in maintenance of SSCs in vitro.

[Pelvic mass in 70 years old patient: Difficult diagnosis of Erdheim-Chester disease]. / Masse pelvienne chez un patient de 70 ans : diagnostic difficile de maladie d'Erdheim-Chester.

Erdheim-Chester disease (EC) is a rare disease that is included in Group L in the 2016 revised classification of Langheransian histiocytoses. This disease may be clinically asymptomatic or manifest as a multi-systemic and life-threatening condition. All organs can be affected but typically there is bone involvement, retroperitoneal fibrosis, pituitary involvement, involvement of large vessels, lung, pleura or central nervous system. We are reporting a 70-year-old patient who, as of 2014, had a pelvic mass with retroperitoneal fibrosis and large vessel vasculitis without a definite diagnosis. Histological and molecular examination of the surgical specimen of the pelvic mass with the discovery of the BRAF V600E mutation provided new elements for the definitive diagnosis of Erdheim-Chester disease. We will describe the clinical, histological and molecular features to be known in EC disease.

Ejaculations and Benign Prostatic Hyperplasia: An Impossible Compromise? A Comprehensive Review.

BACKGROUND: Benign prostatic hyperplasia (BPH) is commonly responsible for lower urinary tract symptoms (LUTS) in men aged 50 or over. Sexual dysfunctions, such as ejaculatory disorders (EjD), go along with LUTS but are frequently overlooked in the initial evaluation. This review aimed to detail BPH-related EjD, as well as their modifications by medical, surgical, and interventional treatments. METHODS: We conducted a narrative review looking for publications between 1990 and 2020, regarding physiopathology, epidemiology, evaluation, and therapeutic management (medical, surgical, and interventional) of BPH-related EjD. RESULTS: Sixty-five articles were included in our final analysis. Forty-six percent of men presenting with LUTS reported EjD. If the prevalence increases with age and LUTS severity, the functional impairment is not correlated with age. Several self-questionnaires evaluated the sexual function, but only four approaches are specific to EjD. Medical therapies were exposed to anejaculation, rather than retrograde ejaculation (RE) (4-30% (alpha-blockers), 4-18% (5-alpha-reductase inhibitors)). Regarding surgical therapies, trans-urethral resection of the prostate (TURP) and incision of the prostate (TUIP) are associated with 50-70% and 21-35% of RE. The RE rate is important after open simple prostatectomy but can be reduced with robotic approaches and urethral sparing techniques (19%). Anatomic endoscopic enucleation of the prostate (AEEP) with or without a laser source is associated with an 11-36% RE rate, according to supramontanal preservation. Recent surgical techniques (Rezum©, Aquablation©, or Urolift©) were developed to preserve antegrade ejaculation with promising short-term results. Regardless of the surgical approach, anatomic studies suggest that the preservation of peri-montanal tissue (7.5 mm laterally; 10 mm proximally) is primordial to avoid post-operative RE. Finally, prostate artery embolization (PAE) limits the RE rate but exposes it to a 12 months 10% re-intervention rate. CONCLUSION: EjD concerns almost half of the patients presenting BPH-related LUTS. Initial evaluation of EjD impairment is primordial before medical or surgical therapy. Peri-montanal tissue preservation represents a key point for antegrade ejaculation preservation, regardless of the surgical option.

Characteristics and intentions of heterosexual couples comprising a transgender man awaiting sperm donation to conceive a child.

BACKGROUND: More than half of transgender (TG) men wish to have children. Until recently, TG people in France were rarely offered gamete donation, mainly because the Bioethics Law allows the use of assisted reproductive technologies (ART) only in infertile couples. The only option currently available for heterosexual couples with a TG man is ART with sperm donation. The Center for Study and Preservation of Eggs and Sperm (CECOS) of the Cochin Hospital is the first French center to propose sperm donation to such couples, and has done so since 1999. OBJECTIVES: To determine the main characteristics and intentions of 43 couples, including a TG man and his cisgender female partner awaiting sperm donation. MATERIALS AND METHODS: A retrospective analysis was carried out on the records from October 2010 to December 2019, of 43 couples with a TG man who applied for sperm donation at the CECOS of the Cochin Hospital (Paris, France). RESULTS: The mean age of TG men and cisgender women was 32 ± 6.6 and 29.7 ± 4.6 years, respectively. In 77% of cases, the couple met before the man's transition. Eighty-one percent of the couples were in a stable relationship for at least 3 years, and 94% wished to have a child for no more than 5 years. Almost all of the couples (95%) intended to inform their child of their conception by sperm donation and the father's transidentity (92%). DISCUSSION: Due to restrictive French legislation, the profile of our couples probably does not reflect that of all couples consisting of a TG man and a cisgender woman. The study took place over a long period of time and the characteristics of the couples could probably change over time. CONCLUSION: The couples often met before the man's transition, cohabited for several years, intended to inform their child of sperm donation and the father's transidentity.

Long-term outcomes after bladder-preserving tri-modality therapy for patients with muscle-invasive bladder cancer.

PURPOSE: To evaluate trimodal conservative treatment as an alternative to radical surgery for urothelial muscle-invasive bladder cancer (MIBC). PATIENTS AND METHODS: This retrospective study reported the carcinologic and functional results of patients (pts) presenting a cT2/T3 N0M0 operable MIBC and fit for surgery, treated by a conservative strategy. Treatment consisted of a transurethral resection (TURB) followed by concomitant bi-fractionated split-course radiochemotherapy (RCT) with 5FU-Cisplatine. A control cystoscopy was performed six weeks after the induction RCT (eq45Gy) with systematic biopsies. Patients with complete histologic response achieved RCT protocol. Salvage surgery was proposed to pts with persistent tumor. RESULTS: 313 pts (83% cT2 and 17% cT3) treated between 1988 and 2013 were included, with a median follow-up of 59 months and 67-year mean age. After the induction RCT, the histologic response rate was 83%. After five years, overall, disease-free, and functional bladder-intact survival rates were respectively 69%, 61%, and 69%, significantly better for pts in complete response after induction RCT. Late urinary and digestive toxicities were limited, with respective rates of 4% and 1.5% of grade 3 toxicity. CONCLUSION: Trimodal strategy with RCT after TURB showed interesting functional and oncologic results and should be considered as an alternative to surgery in well-selected pts.

Prostatic Artery Embolization Allows to Maintain Full Sexual Activity in Patients Suffering from Bothersome Lower Urinary Tracts Symptoms related to Benign Prostatic Hyperplasia.

INTRODUCTION: The effect of prostate artery embolization (PAE) on male sexual function is currently the subject of debate in the literature. The main purpose of this study was to define changes in all domains of sexual activity after PAE, using the international index of erectile function score (IIEF-15). METHODS: A single-center retrospective study was conducted on 129 patients (mean age of 65.5 ± 7 years), who underwent PAE from February 2014 to January 2017 for symptomatic benign prostatic hyperplasia (BPH). Fifty consecutive patients fulfilling the inclusion criteria were evaluated before and after PAE follow-up using the IIEF-15, IPSS, prostate volume (PV) and cardiovascular risk factor and BPH drugs. The IIEF-15 domains analyzed were: erectile function (EF) ejaculation and orgasm (Ej/O), sexual desire (SD), intercourse satisfaction (IS) and overall satisfaction (OS). A paired sample t test or Wilcoxon signed-rank test was used to compare IIEF-15 between baseline and follow-up. RESULTS: The study showed nonsignificant change in IIEF-15 total score (58.0 ± 13.8 SD; p = 0.71) and the five domains (EF 24.5 ± 7.0 SD, p = 0.82; EJ/O 8.2 ± 2.3 SD, p = 0.50; SD 7.2 ± 2.7 SD, p = 0.57; IS 10.3 ± 3.0 SD, p = 0.77; OS 8.2 ± 2.7 SD; p = 0.11) after PAE. We also found a significant improvement in IPSS score after PAE. CONCLUSION: Based on the IIEF-15 questionnaire, PAE was showed to allow good urinary symptoms results and no deterioration in sexual function.

Four-Year Impact of Voiding and Storage Symptoms in Patients with Benign Prostatic Hyperplasia Treated with Prostatic Artery Embolization.

PURPOSE: To study the subscore improvement in International Prostate Symptom Scores (IPSS) after prostatic artery embolization (PAE). MATERIALS AND METHODS: A single-center retrospective study was carried out with follow-up from December 2013 to July 2019 in 37 consecutive patients (66.0 ± 8.8 years old) who underwent PAE, comparing resultant scores before and after PAE. IPSS were divided into storage (IPSS-s) subscores and voiding (IPSS-v) subscores. The changes between IPSS-s and IPSS-v at 1, 3, 6, and 12 months' follow-up as well as the last follow-up were compared with baseline scores. The changes in percentages of IPSS-s and IPSS-v and the changes in average IPSS-s-to-total IPSS ratios (IPSS-s/IPSS-t) and IPSS-v-to-IPSS-t ratios (IPSS-v/IPSS-t) were also analyzed. RESULTS: In the study population, consisting of 37 patients, IPSS-t significantly decreased from 16.5 ± 7.2 at baseline to 8.3 ± 5.7 at the last follow-up (4 years later) (P < .0001). Additionally, the changes in IPSS-v symptoms were greater than the changes in IPSS-s symptoms at 1, 3, 6, and 12 months' follow-up, reaching a statistical significance at 6 months with a decrease of 72.9% ± 42.4% for IPSS-v and a decrease of 50.1% ± 52.2% for IPSS-s (P = .009). CONCLUSIONS: PAE can successfully reduce both IPSS-s and IPSS-v with predominant IPSS-v reduction. The improvements in both subscores were sustained for up to 4 years of follow-up.

Prostate Artery Embolization in Patients With Acute Urinary Retention.

BACKGROUND: This prospective study assessed the efficacy of prostate artery embolization after failure of a trial without catheter in patients suffering a first episode of acute urinary retention as a result of benign prostatic hyperplasia (BPH). METHODS: Patients with failure of a trial without catheter despite alpha-blocker therapy were invited to participate in this protocol. Twenty patients were included in the study, and all underwent prostate artery embolization with calibrated polyvinyl alcohol (PVA) microspheres (Bead Block, BTG Ltd., Farnham, UK). RESULTS: Successful removal of the indwelling bladder catheter and spontaneous voiding was achieved in 15 of 20 (75%) patients, and the overall clinical success at 6 months after prostate embolization was 14 of 20 (70%). No patient experienced severe adverse events. CONCLUSIONS: Prostate artery embolization might be a valuable treatment after a failure of a trial without catheter. Further studies are needed to better define its place in this setting.

[Prostatic artery embolisation for symptomatic BPH]. / Traitement des adénomes de la prostate par embolisation.

Benign Prostatic Hyperplasia (BPH) concerns 50% of men older that 60 Years old and can induce symptoms also earlier. Medical treatment are mostly alpha blockers (AB), 5-alpha réductase inhibitors (5ARI) and phospho-diestérase inhibitors. In case of failure or poor tolerance of drug treatment, surgery can be indicated, after evaluation of the Bladder Outlet Obstruction (BOO), based on urodynamic studies. Endoscopic or open surgery is selected according to the size of the prostate, the expertise of the urologist and patient preference. Surgical treatment is very efficient but carries frequent complications, especially retrograde ejaculation which is very frequent and can compromise fertility and sexual pleasure. Prostatic Artery Embolisation, an outpatient intervention performed by Interventional Radiologists and available in France since 2012 is a new alternative to surgery in case of failure or poor tolerance of medical treatment. It consists in super-selective injection of calibrated micro-particles into both prostatic arteries after femoral artery puncture at the groin. It is safe and efficient and provides appropriate symptomatic improvement BOO related to BPH.

Tumor burden and location as prognostic factors in patients treated by iodine seed implant brachytherapy for localized prostate cancers.

BACKGROUND: Iodine seed implant brachytherapy is indicated for low risk and selected favorable intermediate risk prostate cancers. A percentage of positive biopsies > 50% is usually considered as a contra-indication, and the tumor location could also influence the treatment efficacy. We studied the association of the percentage of positive biopsy cores, and tumor location, with progression-free survival. METHODS: Among the 382 patients treated at our center by permanent implant iodine seed brachytherapy for a localized prostate cancer between 2006 and 2013, 282 had accessible detailed pathology reports, a minimum follow-up of 6 months, and were included. Progression was defined as a biochemical, local, nodal, or distant metastatic relapse. We studied cancer location on biopsies (base, midgland or apex of the prostate) and percentage of positive biopsy cores, as well as potential confounders (pre-treatment PSA, tumor stage, Gleason score, risk group according to D'Amico's classification modified by Zumsteg, adjunction of androgen deprivation therapy, and dosimetric data). RESULTS: Most patients (197; 69.9%) had a low risk, 67 (23.8%) a favorable intermediate risk, 16 (5.7%) an unfavorable intermediate risk, and 1 (0.3%) a high-risk prostate cancer. An involvement of the apex was found for 131 patients (46,5%), of the midgland for 149 (52,8%), and of the base for 145 (51,4%). The median percentage of positive biopsy cores was 17% [3-75%]. The median follow-up was 64 months [12-140]. Twenty patients (7%) progressed: 4 progressions (20%) were biochemical only, 7 (35%) were prostatic or seminal, 6 (30%) were nodal, and 3 (15%) were metastatic. The median time to failure was 39.5 months [9-108]. There were more Gleason scores ≥7 among patients who progressed (40% vs 19%; p = 0.042). None of the studied covariates (including tumor location, and percentage of positive biopsy cores), were significantly associated with progression-free survival. The risk group showed a trend towards an association (p = 0.055). CONCLUSIONS: Brachytherapy is an efficient treatment (5-year control rate of 93%) for patients carefully selected with classical criteria. The percentage and location of positive biopsies were not significantly associated with progression-free survival. A Gleason score ≥ 7 was more frequent in case of progression.

Variants of Patterns of Intra- and Extra-prostatic Arterial Distribution of the Prostatic Artery Applied to Prostatic Artery Embolization: Proposal of a Classification.

The development of prostatic artery embolization has led to better understand the complex male pelvic arterial anatomy. To the best of our knowledge, there is still no precise description of the distribution of the branches of the prostatic artery (PA) after its origin. In this study, the patterns of prostatic feeders near to and into the prostate were analyzed, and a classification was proposed. MATERIALS AND METHODS: This study is based on angiograms of 101 consecutive male patients, mean age 70, who underwent PAE between December 2013 and June 2016, to treat symptomatic benign prostatic hyperplasia. RESULTS: The proposed classification is derived from the analysis of 143 solitary PAs from 199 hemipelves (72%). Pattern A was defined as an artery feeding only the prostate, patterns B and C as a PA with a concomitant large supply to the penis (pattern B) or to the rectum (pattern C). A pattern A was found in 89/143 (62%), a pattern B in 16/143 (12%) and pattern C in 38/143 (26%). Protection of a penile/rectal supply was never required in pattern A, while it was performed in 14/16 (87%) of pattern B, and in 7/38 (18%) of pattern C PAs. The PErFecTED technique could be performed in 51%, 50 and 55% of cases in pattern A to C. CONCLUSION: This study proposes a new classification of intra-/extra-prostatic arterial distribution of the PA that could be helpful to prevent complications of PAE. Further prospective angiographic investigations are necessary to confirm its clinical value.

Bilateral Arterial Embolization of the Prostate Through a Single Prostatic Artery: A Case Series.

Peri-prostatic shunts are frequent during PAE, carrying the risk of non-target embolization of penis/corpus cavernosum or rectum but also the potential advantage to irrigate the contralateral lobe. Sometimes, bilateral embolization is impossible, carrying the risk of limited clinical success. The possibility to reach contralateral prostatic territory from the ipsilateral prostatic artery (PA) and embolize it via peri/intra-prostatic anastomoses could be of interest in this situation. We describe a series of three consecutive patients (among 89 consecutive patients treated by PAE for symptomatic BPH) who underwent successful embolization of both prostatic lobes through catheterization of a PA on only one side. All patients had clinical success after a mean follow-up of 3.3 months. Dosimetry of these three procedures indicates that there may be radiation dose savings.