A right colon pouch with a novel efferent channel concept: long-term results of the Turin pouch.

PURPOSE: To report stoma stenosis rates and efferent channel (EC) complications at long term follow-up for Turin pouch (TP). METHODS: This is a retrospective analysis of the prospectively maintained database of patients who underwent TP between March 2006 and May 2018. The TP is a U-shaped right colon pouch. The EC was conceived by the tubularization of 5 cm of the colon wall with the use of a stapler and sutured to the skin (EC-cutaneostomy). The ureters are sutured separately to the last 10 cm of ileum before the ileocecal valve. In literature, catheterization problems have been described on average in 20.3% of patients and stoma stenosis in 19.5% of the patients with flap valve systems. RESULTS: Thirty-eight consecutive patients underwent a TP procedure. The median age was 55 years (IQR: 52-60). Median operative time was 201 min (IQR: 170-210), median reconstructive time was 61 min (IQR: 55-65) and the blood loss was 244 ml (IQR: 150-300) and 4 patients (10.5%) needed blood transfusions. The median follow-up was 52 months (IQR: 37-92). Complete 24h continence was achieved in 34 (89%) patients. Seven (18.4%) patients reported difficulties in EC catheterization and 4 (10.5%) patients had stoma stenosis. This study is limited by the relatively small number of patients. CONCLUSION: In relation to similar systems, the TP seems to offer comparatively good functional results but EC and stoma complications were lower than other pouch variants in literature.

C-Met/miR-130b axis as novel mechanism and biomarker for castration resistance state acquisition.

Although a significant subset of prostate tumors remain indolent during the entire life, the advanced forms are still one of the leading cause of cancer-related death. There are not reliable markers distinguishing indolent from aggressive forms. Here we highlighted a new molecular circuitry involving microRNA and coding genes promoting cancer progression and castration resistance. Our preclinical and clinical data demonstrated that c-Met activation increases miR-130b levels, inhibits androgen receptor expression, promotes cancer spreading and resistance to hormone ablation therapy. The relevance of these findings was confirmed on patients' samples and by in silico analysis on an independent patient cohort from Taylor's platform. Data suggest c-Met/miR-130b axis as a new prognostic marker for patients' risk assessment and as an indicator of therapy resistance. Our results propose new biomarkers for therapy decision-making in all phases of the pathology. Data may help identify high-risk patients to be treated with adjuvant therapy together with alternative cure for castration-resistant forms while facilitating the identification of possible patients candidates for anti-Met therapy. In addition, we demonstrated that it is possible to evaluate Met/miR-130b axis expression in exosomes isolated from peripheral blood of surgery candidates and advanced patients offering a new non-invasive tool for active surveillance and therapy monitoring.

Trends in the use of partial nephrectomy for cT1 renal tumors: Analysis of a 10-yr European multicenter dataset.

AIM: Although extensively addressed in US registries, the utilization rate of Partial Nephrectomy has been poorly addressed in European settings. Our aim is to evaluate the impact of hospital volume on the use of PN for cT1 renal tumors. METHODS: 2526 patients with cT1N0M0 renal tumors treated with either PN or radical nephrectomy at 10 European centres in the last decade were included in the analysis. Joinpoint regression analysis was used to identify significant changes over time in linear slope of the trend for each center. The correlation between yearly caseload and the slopes was assessed with the non-parametric Spearman test. Coincident pairwise tests and regression analyses were used to generate and compare the trends of high-volume (HV), mid-volume (MV) and low-volume (LV) groups. RESULTS: Yearly caseload was significantly associated with increased use of PN (R = 0.69, p = 0.028). The utilization rate of PN was stable at LV centres (p = 0.67, p = 0.7, p = 0.76, for cT1, cT1a, and cT1b tumors, respectively), while increased significantly at MV (p = 0.002, 0.0005 and 0.007, respectively) and HV centers (all p < 0.0001). Regression analysis confirmed the trends for HV and MV as significantly different from those observed in LV centres (all p ≤ 0.002) and highlighted significant differences also between MV and HV centres (all p ≤ 0.03). CONCLUSIONS: We confirmed the association between caseload and the use of PN for cT1 tumors. Our findings suggest that a minimum caseload might turn the tide also in LV centres while a selective referral to HV centers for cT1b tumors should be considered.

Stapled orthotopic ileal neobladder after radical cystectomy for bladder cancer: Functional results and complications over a 20-year period.

AIMS: To present the long term-results and complications of a large series of stapled ileal orthotopic neobladders. MATERIALS AND METHODS: From 1992 to 2012 we performed 606 radical cystectomies with stapled orthotopic neobladder substitution in male patients. The median patient age was 65 years (interquartile range [IQR]: 58-71). RESULTS: Median operative time was 205 min (IQR: 180-225). The overall survival rates at 5, 10, 15, and 20 yr were 68% (336 of 494), 55% (207 of 376), 38% (98 of 259), and 23% (14 of 62), respectively, and the disease specific survival rates were 75% (371 of 494), 59% (222 of 376), 50% (130 of 259), and 35% (22 of 62), respectively. After a median follow-up of 81 months (IQR: 30-144), a total of 147 early (less than 90 days) complications (38 diversion related, 109 diversion unrelated) occurred in 144 patients (24%); 163 late complications (141 diversion related, 22 diversion unrelated) affected 141 patients (23%). At 60 months, daytime and nighttime continence was complete in 96% and 72% of cases, respectively. Urodynamic studies showed that maximum capacity, residual volume, maximum flow rate, pressure at maximum capacity, and maximum outlet closure pressure were not statistically different at 12 and 60 months postoperatively. CONCLUSIONS: The use of a stapler when performing orthotopic neobladders significantly reduces the operating time, and offers good functional results with acceptable complication rates. Our results could encourage the use of a stapler when performing an ileal neobladder during laparoscopic and robotic radical cystectomies.

Is there still a role for computed tomography and bone scintigraphy in prostate cancer staging? An analysis from the EUREKA-1 database.

PURPOSE: According to the current guidelines, computed tomography (CT) and bone scintigraphy (BS) are optional in intermediate-risk and recommended in high-risk prostate cancer (PCa). We wonder whether it is time for these examinations to be dismissed, evaluating their staging accuracy in a large cohort of radical prostatectomy (RP) patients. METHODS: To evaluate the ability of CT to predict lymph node involvement (LNI), we included 1091 patients treated with RP and pelvic lymph node dissection, previously staged with abdomino-pelvic CT. As for bone metastases, we included 1145 PCa patients deemed fit for surgery, previously staged with Tc-99m methylene diphosphonate planar BS. RESULTS: CT scan showed a sensitivity and specificity in predicting LNI of 8.8 and 98 %; subgroup analysis disclosed a significant association only for the high-risk subgroup of 334 patients (P 0.009) with a sensitivity of 11.8 % and positive predictive value (PPV) of 44.4 %. However, logistic multivariate regression analysis including preoperative risk factors excluded any additional predictive ability of CT even in the high-risk group (P 0.40). These data are confirmed by ROC curve analysis, showing a low AUC of 54 % for CT, compared with 69 % for Partin tables and 80 % for Briganti nomogram. BS showed some positivity in 74 cases, only four of whom progressed, while 49 patients with negative BS progressed during their follow-up, six of them immediately after surgery. CONCLUSIONS: According to our opinion, the role of CT and BS should be restricted to selected high-risk patients, while clinical predictive nomograms should be adopted for the surgical planning.

A microRNA code for prostate cancer metastasis.

Although the development of bone metastasis is a major detrimental event in prostate cancer, the molecular mechanisms responsible for bone homing and destruction remain largely unknown. Here we show that loss of miR-15 and miR-16 in cooperation with increased miR-21 expression promote prostate cancer spreading and bone lesions. This combination of microRNA endows bone-metastatic potential to prostate cancer cells. Concomitant loss of miR-15/miR-16 and gain of miR-21 aberrantly activate TGF-ß and Hedgehog signaling, that mediate local invasion, distant bone marrow colonization and osteolysis by prostate cancer cells. These findings establish a new molecular circuitry for prostate cancer metastasis that was validated in patients' cohorts. Our data indicate a network of biomarkers and druggable pathways to improve patient treatment.

Benefits and shortcomings of superselective transarterial embolization of renal tumors before zero ischemia laparoscopic partial nephrectomy.

AIMS: To report feasibility, safety and effectiveness of "zero-ischemia" laparoscopic partial nephrectomy (LPN) following preoperative superselective transarterial embolization (STE) for clinical T1 renal tumors. METHODS: We retrospectively reviewed perioperative data of 23 consecutive patients, who underwent STE prior LPN between March 2010 and November 2012 for incidental clinical T1 renal mass. STE was performed by two experienced radiologists the day before surgery. Surgical procedures were performed in extended flank position, transperitoneally, by a single surgeon. RESULTS: Mean patients age was 68 years (range 56-74), mean tumor size was 3.5 cm (range 2.2-6.3 cm). STE was successfully completed in 16 patients 12-15 h before surgery. In 4 cases STE failed to provide a complete occlusion of all feeding arteries, while in 3 cases the ischemic area was larger than expected. LPN was successfully completed in all patients but one where open conversion was necessary; a "zero-ischemia" approach was performed in 19/23 patients (82.6%) while hilar clamp was necessary in 4 cases, with a mean warm-ischemia time of 14.8 min (range 5-22). Mean operative time was 123 min (range 115-130) and mean intraoperative blood loss was 250 mL (range 20-450). No patient experienced postoperative acute renal failure and no patient developed new onset IV stage chronic kidney disease at 1-yr follow-up. CONCLUSIONS: STE is a viable option to perform "zero-ischemia" LPN at beginning of learning curve; however, hilar clamp was necessary to achieve a relatively blood-less field in 17.4% of cases.

Control of tumor and microenvironment cross-talk by miR-15a and miR-16 in prostate cancer.

The interaction between cancer cells and microenvironment has a critical role in tumor development and progression. Although microRNAs regulate all the major biological mechanisms, their influence on tumor microenvironment is largely unexplored. Here, we investigate the role of microRNAs in the tumor-supportive capacity of stromal cells. We demonstrated that miR-15 and miR-16 are downregulated in fibroblasts surrounding the prostate tumors of the majority of 23 patients analyzed. Such downregulation of miR-15 and miR-16 in cancer-associated fibroblasts (CAFs) promoted tumor growth and progression through the reduced post-transcriptional repression of Fgf-2 and its receptor Fgfr1, which act on both stromal and tumor cells to enhance cancer cell survival, proliferation and migration. Moreover, reconstitution of miR-15 and miR-16 impaired considerably the tumor-supportive capability of stromal cells in vitro and in vivo. Our data suggest a molecular circuitry in which miR-15 and miR-16 and their correlated targets cooperate to promote tumor expansion and invasiveness through the concurrent activity on stromal and cancer cells, thus providing further support to the development of therapies aimed at reconstituting miR-15 and miR-16 in advanced prostate cancer.

Treatment of large cold benign thyroid nodules not eligible for surgery with percutaneous ethanol injection.

We studied the effect of percutaneous ethanol injection (PEI) in the treatment of cold, cytologically benign, large (>10 mL) thyroid nodules (CBNs) in 41 patients. The end-point of our study was to evaluate the efficacy of PEI on: 1) local symptomatology, assessed by an arbitrary symptom score; and 2) nodule volume and tracheal displacement (at ultrasonography). Follow-up ranged from 12-36 (21 +/- 9) months. Symptom score was significantly reduced (P < 0.01) after 6 months and at the end of the follow-up (2.1 +/- 0.3 vs. 0.2 +/- 0.5 and vs. 0.2 +/- 0.4). A significant (P < 0.01) nodule volume reduction was observed, without differences between solid or mixed CBNs; the reduction was 50% or more in 92.7% of patients. Neither clinical parameters nor pretreatment nodule ultrasonographic features were related to nodule reduction. Disappearance or significant reduction (>0.5 cm) of tracheal displacement was obtained in 61% and in 39% of patients, respectively. One patient experienced prethyroid region edema, pain, and mild fewer, which reversed within 1 week; and one patient had dysphonia, caused by vocal cord palsy, which reversed spontaneously within 1 month. At the end of the follow-up, nodules with just necrotic material at cytology showed a greater (P < 0.05) volume reduction than nodules with residual benign thyroid cells. Our data suggest that PEI is a safe and effective treatment of large CBNs, although sometimes serious side effects do occur.

Personal adjustments and regimen compliance 1 year after myocardial infarction.

The relationship of attitudes and perceived beliefs of others to regimen compliance and personal psychologic and social adjustments of patients with myocardial infarction was investigated 1 year after the infarction. Eighty-one patients (39 in the experimental group, 42 in the control group) who participated in a prior study on the effect of a nursing intervention on regimen compliance, completed scales that assessed attitudes toward regimen prescriptions (diet, medications, activity, smoking, and stress response), perceived beliefs of others concerning compliance, personal adjustments, and regimen compliance. At 1 year, no differences were found between experimental and control groups for regimen compliance or personal adjustments. There was a significant decrease in mean scores for all variables from the time the patient was in the hospital to 30 days afterward, but no change at 1 year from the 30- or 60-day visit. At 1 year, attitudes were predictive of compliance for all regimen prescriptions. Perceived beliefs of others were predictive of diet, activity, and medication prescriptions.