bluuebunny/crossref_metadata_2025_split huggingface dataset:
Does higher number of lymph nodes (LNs) excised during radical prostatectomy (RP) improve biochemical relapse-free survival (bRFS) in patients with pT2-3a/pN0 prostate cancer?
Authors: Seyedin Steven Neema , Mitchell Darrion L , Russo James Kyle , Mott Sarah L , Parkhurst Jessica , Smith Mark C , Buatti John Michael , Watkins John Morgan 
Published: March 2017

61 Background: In published series of extended pelvic LN dissection (LND), an association between higher number of LNs resected and both higher rate of occult LN disease discovery and long-term bRFS (for pN0) was observed. Despite this, practice patterns of LND extent (and associated number of LNs examined) vary, with the majority being limited to local nodal sampling. It remains unclear whether the LN yield correlates with bRFS in this context. The present investigation examines whether the number of LNs examined at RP is associated with bRFS. Methods: Patients with clinically localized prostate cancer, initial PSA < 30, and pT2-3a/N0 disease at RP were retrospectively identified for inclusion. Those who received pre-RP or adjuvant radiotherapy or hormone therapy were excluded. Kaplan-Meier method was employed for survival probability estimation. Cox regression models were used to assess bRFS differences. Results: From 2002 to 2010, 672 patients were eligible for this analysis. The median age was 61 yrs (range, 43-76). Most patients had cT1c (83%), Gleason Score (GS) 4-6 (63%), and were low risk by D’Amico classification (56%), with median PSA of 5.6 ng/dL (0.9-28.0). At RP, 213 (32%) patients had positive margins (M+). At a median follow-up of 82 months, 140 patients (21%) experienced PSA failure with estimated bRFS of 81%/76% at 5/8 years. Univariate analysis identified GS ³ 7 (biopsy or RP), intermediate/high risk, M+, higher percentage of biopsy cores involved, and performance of LND as adversely associated with bRFS (all p < 0.01). Of 446 patients (66%) who had LN sampling , 396 had a specific number of LNs reported (median 5; range 1-24, with single outlier case [33] excluded for statistical analysis). A higher number of LNs excised was not associated with bRFS for the entire cohort (HR = 0.99, p = 0.60), or for any biopsy GS subgroup (GS4-6 HR = 0.92, GS7 HR = 1.00, GS8-10 HR = 0.11). Conclusions: In the context of limited LND, this study did not demonstrate an association between LN yield and bRFS in patients with clinically localized pT2-3a/pN0 prostate cancer managed with RP alone, either in the entire population or with stratification by GS.
Permanent seed brachytherapy for low risk prostate cancer, long term outcome, and urinary toxicity.
Authors: Raziee Hamid , Berlin Alejandro , Chung Peter W. M. , Helou Joelle Antoine , Jiang Haiyan , Crook Juanita M. , Catton Charles N 
Published: March 2017

66 Background: Low dose rate seed brachytherapy is an established treatment modality for low risk prostate cancer (CaP). Herein, we report long term biochemical control and urinary toxicity from a single institution. Methods: Data from a prospectively-collected institutional database was used, completed with retrospective chart reviews. All patients with low-risk CaP (NCCN criteria) who underwent ultrasound-guided permanent iodine-125 brachytherapy from March 1999 to December 2005 were included. Urinary function was evaluated by the International Prostate Symptom Score (IPSS). PSA relapse was defined by Phoenix Criteria (nadir + 2 ng/ml). Time to IPSS return-to-baseline score ±3 was recorded. Results: 582 patients with a median age of 64 years were included. Median initial PSA was 5.5 ng/ml (0.3-10). 66% and 34% were T1 and T2a, respectively. Gleason score was 6 (96%) and < 6 (4%). Prescription dose was 145Gy, with a median V100 coverage of 94% (IQR [interquartile range] 89-97%) and median D90 of 157Gy (IQR 144-171 Gy). With a median follow up of 131 months (IQR 94-149 months), 27 patients showed biochemical failure (4.6%), and PSA bounce was detected in 38 cases (7%). Biochemical progression-free rates were 97% (96-98%), 96% (94-97%), and 94% (91-96%) at 5, 10, and 15 years, respectively. Median PSA level at 5, 10 and 15 years was 0.06, 0.05 and 0.018 ng/ml, respectively. PSA relapses were observed out to 148 months. At 1, 5, 10 and 15 years, 5.5%, 16.5%, 39.5% and 89.2% of patients were lost to PSA follow up. Median baseline IPSS score was 5. In 515 (88.5%) patients IPSS returned to baseline, with a median time to return-to-baseline of 9 months. The proportion of return-to-baseline at 1, 2, 5, and 10 years was 62%, 75%, 88%, and 90%, respectively. 22 (4%) patients required post-implant urinary catheter. After 3, 6 and 12 months, 9 (1.5%), 6 (1%) and 4 (0.7%) patients continued to be catheterized. Conclusions: Within the limits of retrospective analysis, permanent seed brachytherapy for low risk prostate cancer is an effective treatment modality with low urinary toxicity. Treatment resulted in excellent long-term biochemical control although late relapses were observed.
The importance of surgical margins for biochemical recurrence in high-risk prostate cancer patients.
Authors: Srougi Victor , Sanchez-Salas Rafael , Secin Fernando P. , Nunes-Silva Igor , Baghdadi Mohammed , Barreras Silvia Garcia , Rembeyo Gregory , Rozet Francois , Galiano Marc , Barret Eric , Cathelineau Xavier 
Published: March 2017

75 Background: High-risk prostate cancer (PCa) is associated with greater risk of biochemical recurrence and cancer specific lethality. A multi-modal treatment is required for this group of patients, comprising surgery as part of it. However, the role of surgery as monotherapy is still under investigation. The purpose of this study is to analyze the influence of surgical margins on biochemical recurrence (BCR) among patients with high-risk prostate cancer (PCa) treated with robot assisted radical prostatectomy (RARP) since the start of our robotic program. Methods: We retrospectively analyzed our prospectively collected database of 5695 minimally invasive prostatectomies performed between 2000 and 2015. Clinical, pathological and oncological outcomes were evaluated in patients fulfilling Damico´s high risk characteristics. Primary endpoint was BCR, defined as post-operative PSA ≥ 0,2. Patients with neoadjuvant or adjuvant therapy were excluded. BCR was estimated with Kaplan-Meier curves. Cox proportional hazards regression was used to estimate variables associated with BCR. Results: We identified 199 high-risk PCa patients treated with RARP during the study period. Gleason score ≥ 8, PSA ≥ 20 and clinical stage ≥ T2c were present in 44%, 35% and 11% of the patients, respectively. The rate of positive surgical margins was 25%. With a median follow-up of 23 months (interquartile 12 – 34 months), 31% of the patients had BCR. Five-year BCR-free survival was 34,5%. Gleason score ≥ 8, PSA ≥ 20 and positive surgical margins were not predictors of BCR. A positive correlation of pathological stage ≥ T3 and BCR was found with (HR = 2.9; 95% CI = 1.2-6.9). Conclusions: The 5-years BCR-free survival was poor despite a low rate of positive surgical margins, when compared to historical series. We found that pathological stage ≥ T3 has a significant correlation with the BCR and that negative surgical margins do not assure good prognosis for high-risk patients.
Localized prostate cancer and salvage treatment: EBRT first + salvage HIFU or HIFU first + salvage EBRT? A single-institution matched pair analysis over a 20-year period.
Authors: Pasticier Gilles , Lee Ji-Wann , Crouzet Sebastien , Soria J , Medollima Christelle , Mege-Lechevallier Florence , Chapelon Jean-Yves , Rouviere Olivier , Gelet Albert 
Published: March 2017

77 Background: In the field of curative treatment for localized prostate cancer, HIFU (High Intensity Focused ultrasound) is one of salvage option after EBRT(external beam radiation therapy) failure and EBRT is the standard salvage option for local relapse after HIFU.Our aim was to compare and evaluate the oncologic outcomes between HIFU first + salvage EBRT versus EBRT first +salvage HIFU. Methods: Using a matched pair analysis, 342 Patients (171 in each group) treated between 1994 and 2014 in the same institution were prospectively followed and matched to a 1:1 basis. Outcome measurements: Overall Survival Rate(OSR), cancer specific(CSSR) and metastasis free (MFSR) survival rates were the primary endpoints. Secondary endpoints were survival rate free of hormone therapy (HTFR) and the rate of side effects Clavien score ≥ 3. Results: Mean follow-up were 114 and 124 months for HIFU+ S-EBRT and EBRT + S-HIFU respectively. At 7 years from the primary treatment , the MFSR were significantly better after HIFU first +S- EBRT than after EBRT first+S- HIFU: 96% vs 91%% (p:0.011). The OSR and the CSSR were not significantly different in the two arms (97% and 99% after HIFU+S- EBRT versus 96% and 98% after EBRT+S- HIFU). The HTFR at 7 years was significantly different (p <0.001) after HIFU+ S-EBRT than after EBRT+ S-HIFU 90% versus 69%. In multivariable Cox regression, the initial Gleason sum ≥ 8 and the treatment strategy were predictors of MFSR (risk ratio 3.2 for treatment modality). The rate of side effect Clavien score≥ 3 was significantly higher (p:0.01) in the EBRT+ S-HIFU arm than in the HIFU+ S-EBRT arm. The rate of urinary toxicity (severe incontinence and bladder outlet obstruction) were worse in the EBRT+ S-HIFU arm than in HIFU+S-EBRT arm: 9.4% and 15.2% vs 1.2% and 7.6% (p:0.01 and 0.078). Conclusions: In this single-institution Matched Pair comparison, the MFSR and HTFR were significantly better in the HIFU+S-EBRT arm than in the EBRT+S-HIFU arm. The rate of urinairy toxicity and Clavien≥3 side-effects were Higher in the EBRT + S-HIFU arm than in the HIFU + S-EBRT arm.
Is there a relationship between testosterone levels at the end of short-term androgen deprivation therapy and outcomes in intermediate risk prostate cancer? Prospective data from a phase III trial.
Authors: Nabid Abdenour , Garant Marie-Pierre , Vigneault Eric , Souhami Luis , Lemaire Celine , Brassard Marc-Andre , Bahoric Boris , Archambault Robert , Vincent Francois , Nguyen-Huynh Thu-Van , Bettahar Redouane , Wilke Derek R 
Published: March 2017

78 Background: The purpose of this analysis was to assess whether the testosterone level measured at the end of short term androgen deprivation therapy (STADT) and prostate radiotherapy (RT) has an impact on treatment outcomes in patients with intermediate risk prostate cancer (IRPC) treated on a randomized trial (PCS III ClinicalTrials.gov #NCT00223145). Methods: From December 2000 to September 2010, 400 patients with IRPC received 6 months of STADT (bicalutamide 50mg die and goserelin 10.8mg x 2) and RT. Castrate level of testosterone was defined as <1.7 nmol/L: lower level <0.7 and upper level 0.7-1.7. In 347/400 patients, testosterone levels were available at the end of STADT and were divided into 3 groups based on measured testosterone levels: <0.7, 0.7 to 1.7 and >1.7 nmol/L. Patient’s characteristics were compared with ANOVA and Fisher’s exact test. Biochemical failure, prostate cancer recurrence and death were compared with Cox regression. Results: Patient’s characteristics were well balanced between the 3 groups with no statistical difference for age, performance status, PSA at start, Gleason score and stage. At the end of STADT 55.3% (192/347) presented testosterone levels <0.7 and 38.9% (135/347) levels between 0.7 and 1.7 for a total of 94.2% (327/ 347) reaching castrate levels ≤1.7 nmol/L. In 5.8% of patients (20/347) a castrate testosterone level was not achieved. With a median follow-up of 8.1 years, outcomes are shown in the table. Conclusions: In IRPC patients treated with STADT and RT, the majority of patients (94.2%) achieve a castrate level of testosterone (<1.7 nmol/L). Although we could not show a difference in outcomes between castrate and non-castrate patients, these data have to be viewed with caution given the small number of non-castrate patients studied. Source of Funding: AstraZeneca Pharmaceuticals Grant. Clinical trial information: NCT00223145. [Table: see text]
Does a community cancer center one-day prostate cancer multidisciplinary clinic result in a change in treatment recommendation?
Authors: Cushman Taylor Reid , Mashni Joseph W , Kumar Rachit 
Published: March 2017

82 Background: Multi-disciplinary clinics (MDCs) offer patients the opportunity to meet with multiple providers to discuss treatment options for recently diagnosed prostate cancer. Multiple academic centers have published their experience with these clinics. However, this approach has been sparsely reported in the community setting. Herein, we assess if an MDC results in more appropriate treatment recommendations for patients based on NCCN risk category compared to incoming (non-MDC) treatment recommendations. Methods: A retrospective chart review of patients evaluated in the institutional prostate cancer MDC clinic were reviewed over a 22 month period (January 2015 through October 2016). A single urologist and radiation oncologist served as clinic consultants for all patients. Patients were asked to report the recommendation for treatment prior to evaluation in the MDC clinic, and the patient selection for treatment after evaluation in the MDC clinic. Changes in treatment recommendation were recorded based on NCCN risk category (low [LR], intermediate [IR], and high [HR] risk groups). Results: Eighty patients were evaluated in the MDC. Of the 80 patients, 64 (80%) chose to continue care with the providers in the prostate MDC. Evaluable records (i.e. initial treatment recommendations) were available for 46 of the 64 patients (72%). Median age of the evaluable patients was 67 years (range 43-83). By risk category, 15 (33%) were LR, 21 (46%) were IR, and 10 (22%) were HR. Eleven patients in the LR group (73%) had altered treatment recommendations, 82% of whom were changed from any treatment (surgery or radiation) to active surveillance. Ten patients in the IR group (48%) and four patients in the HR group (40%) had altered treatment recommendations, mostly from surgery to radiation +/- ADT (50% in the IR, and 75% in the HR group). For all patients seen in the MDC, eight (10%) enrolled on a clinical trial (prostate stereotactic radiation). Conclusions: Implementation of a community-based, one-day prostate MDC resulted in significant changes in treatment recommendations, particularly in increasing active surveillance for LR patients and reducing surgical intervention in IR and HR patients.
Focal cryo-hemiablation to treat unilateral localized prostate cancer: A prospective midterm oncologic and functional outcomes.
Authors: Baghdadi Mohammed , Barret Eric , Sivaraman Arjun , Sanchez-Salas Rafael , Nunes-Silva Igor , Srougi Victor , Ahallal Youness , Rembeyo Gregory , Barreras Silvia Garcia , Rozet François , Galiano Marc , Cathelineau Xavier 
Published: March 2017

e537 Background: We report our mid-term oncologic and functional outcomes of focal cryo-hemiablation (FC-HA) for unilateral localized low-risk prostate cancer (PCa). Methods: Prospective single-arm interventional study analyzing mid-term data of PCa patients treated at our institution with FC-HA of diseased lobe. Inclusion criteria‎ were men with unilateral localized cancer, PSA < 15 ng/ml, clinical stage T1c-T2a, Gleason score ≤ 7 (3+4), maximum number of cancer-cores < 33%, maximum cancer involvement in a single core < 50%, no extra prostatic extension in mp-MRI, no previous PCa-related treatment and life expectancy ≥10 yr. PSA was measured every 3 mo during 1st yr post treatment, and biannually thereafter. mp-MRI and biopsy of both lobes were routinely done at 12 mo, while repeat biopsies were driven by PSA elevations. Continence, urinary and erectile functions were assessed using ICS, IPSS and IIEF-5 questionnaires, respectively. Treatment failure (primary outcome) was defined as residual cancer in treated lobe at follow up. Results: We studied 52 men with mean (SD) age of 65.8 (7.2) yrs and median (IQR) follow-up of 31 (21-44) mo. Baseline criteria were: median (IQR) of PSA of 6.8 (5.4–8.0) ng/ml, total number of cancer-cores of 2 (1-3) and percentage cancer-cores of 17% (8-25), and total cancer-core length of 7 (3-12) mm. Gleason score was 6 (3+3) in 33 (63.5%) and 7 (3+4) in 19 (36.5%) patients. Follow-up biopsies were done in 1st, 2nd and 3rd yrs for 52 (100%), 28 (53.8%) and 15 (28.8%) patients, respectively, revealing cancer-cores in 13/52 (25%) patients. 6 (11.5%), 5 (9.6%) and 2 (3.8%) patients showed cancer in ipsilateral lobe, contralateral lobe and bilaterally, respectively. Treatment failure was observed in the treated lobe in 8 (15.4%) patients. Median (IQR) PSA significantly (p < 0.0001) declined to nadir PSA of 2.9 (1.5-4.2) ng/ml (57.4% reduction) at 3 mo. None of patients demonstrated undetectable PSA. All patients maintained continence with insignificant worsening of IPSS (p <0.92) and IIEF-5 (p <0.07) and low toxicity. Conclusions: FC-HA appears to maintain acceptable oncologic control in mid-term follow-up with preserved genitourinary functions and low toxicity.
Prostate cancer stage at diagnosis: First data from a Middle-Eastern cohort.
Authors: Mukherji Deborah , Abed El Massih Sarah , Daher Marilyne , Chediak Alissar , Charafeddine Maya , Shahait Mohammed , Temraz Sally Naji , Geara Fady B. , El Hajj Albert , Nasr Rami , Wazzan Wassim , Bulbul Mohammad , Khauli Raja , Shamseddine Ali 
Published: March 2017

e552 Background: Current data suggest that prostate cancer incidence is increasing in the Middle East and North Africa (MENA) region however remains significantly lower than the United States and Europe. No data are available regarding stage at diagnosis or treatment. SEER data from the US suggest that only 4% of patients present with metastatic disease. We hypothesized that rates of presentation with stage 4 disease are significantly higher in the MENA region. Methods: After IRB approval, a review of prostate cancer cases presenting to the leading tertiary referral center in Lebanon from January 2010 to July 2015 was undertaken. From September 2014 these data were collected prospectively. The American University of Beirut Medical Center sees approximately one third of all cancer cases in the country and is a major referral center for Syria and Iraq. Results: 582 cases were identified, median age at diagnosis was 68 (range 43-97); median PSA at diagnosis was 10.2ng/ml (range 2.3 – 3490), median Gleason score was 7. 480 patients had staging data available; 77.4% (449) presented with organ-confined disease, 22.6% (136) presented with stage 4 disease at diagnosis. 12% of this cohort were from Iraq, 57.6% presenting with stage 4 disease. Increasing age correlated with higher stage at presentation in this cohort. In patients presenting with PSA > 20, 62.3% were found to have stage 4 disease. Conclusions: This is the first report of prostate cancer stage at diagnosis from a large cohort of patients from the Middle East showing a median age at diagnosis of 68 and 22.6% presenting with stage 4 disease. These data highlight the importance of multi-disciplinary management and health-care system planning for the rising burden of prostate cancer affecting the MENA population.
Predictive factors and the important role of detectable prostatic specific antigen for the detection of clinical recurrence following robot-assisted radical prostatectomy.
Authors: Barreras Silvia Garcia , Rozet François , Nunes-Silva Igor , Srougi Victor , Baghdadi Mohammed , Sanchez-Salas Rafael , Barret Eric , Galiano Marc , Prapotnich Dominic , Cathelineau Xavier 
Published: March 2017

e567 Background: To evaluate predictive factors associated with detectable prostate-specific antigen (PSA) and clinical recurrence (CR) after robot assisted radical prostatectomy (RARP). Methods: The study included 2500 patients who were treated with RARP between 2000 and 2016. Patients were divided into two groups according to PSA value at 6 weeks after surgery: undetectable PSA (PSA < 0.1 ng/dl) and PSA persistently elevated (PSA ≥ 0.1 ng/dl). Logistic regression analysis was used to evaluate association between covariates and: (1) detectable PSA, (2) CR (positive imaging during follow up) in persistently elevated PSA group. Kaplan-Meier analyses were used to assess CR and cancer-specific mortality (CSM) rates according to PSA persistence after surgery. Results: Overall, 229 patients (9.16%) experienced PSA persistence and from them, 38 (16.5%) had CR. Inside the group of detectable PSA ,146 men (63.75%) received adjuvant treatments and 44 (19.21%) salvage therapies. Gleason ≥ 7, ≥ pT3a, PSA > 10 ng/dl and positive margins were found as significant predictive factors of detectable PSA after surgery (all p < 0.001). Within patients with detectable PSA, stage ≥ pT3a (HR: 2.71; 95% CI, 1.10-6.67; p < 0.029) and to received adjuvant ADT (HR: 13.36; 95% CI, 5.18-34.48; p < 0.001) were associated with CR. CR-free survival in Gleason ≤ 6 at 3-year was 100% vs 60% for Gleason 7(4+3) and 20% for Gleason ≥ 8, (p 0.02). Men aged < 65 years had higher 3-year CR-free survival than older (35% vs 20%, p 0.05). 10-year CSM rates were higher for patients with CR (25% vs 0% no CR; p < 0.001), for men with Gleason ≥ 8 (10% at 10-y; p 0.003) and pathological stage ≥ pT3a (9% at 10-y; p 0.05). CSM rate for patients who received adjuvant ADT+ RT was 20%, 10% for men with ADT and 0% for patients without adjuvant treatment at 10-year (p 0,03). Conclusions: A detectable PSA is clearly affected by factors associated with high risk prostate cancer. Stage pT3 and adjuvant ADT have an important prognostic value in the prediction of CR. Patients with CR , Gleason ≥ 8, pathologic stage ≥ pT3 and those who are treated with adjuvant ADT+ RT must have a close monitoring due to the high rate of mortality.