64 research outputs found

    Tissue‐resonance interaction method for the noninvasive diagnosis of prostate cancer: analysis of a multicentre clinical evaluation

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    OBJECTIVETo determine, in a multicentre prospective study, the accuracy of the tissue‐resonance interaction method (TRIMprob, new technology developed for the noninvasive analysis of electromagnetic anisotropy in biological tissues) in the diagnosis of prostate cancer.PATIENTS AND METHODSTwo hundred patients (mean age 67.4 years) scheduled to have prostatic biopsies (because of a prostate‐specific, PSA, antigen level of ≥4 ng/mL or a suspicious digital rectal examination, DRE) were preliminarily examined while unaware of their clinical details using TRIMprob in five different centres. The final diagnosis obtained with TRIMprob was compared with the final histological diagnosis after extended biopsies.RESULTSOf the 188 evaluable patients (mean PSA level 9.3 ng/mL, sd 8.8; mean prostate volume 62.0 mL, sd 32.4), 61 (32.4%) had a positive biopsy for adenocarcinoma of the prostate. The overall sensitivity, specificity, positive predictive value, negative predictive value (NPV) and accuracy of TRIMprob were 80%, 51%, 44%, 84% and 60%, respectively. The prostate cancer detection rate after biopsy was significantly higher in patients with a positive examination (49/111, 44%) than in patients with a negative TRIMprob (12/77, 15%; P < 0.001). When TRIMprob results were combined with DRE findings the sensitivity and NPV both increased to 92%.CONCLUSIONTRIMprob seems to be a useful tool in the diagnosis of prostate cancer and can increase the accuracy of PSA or DRE results. The high NPV suggests that this new technology might be useful to reduce the indications for prostatic biopsy or repeated series of biopsies in patients suspected of having prostate cancer

    Varicocele treatment: A 2-centers comparison between non microsurgical open correction, laparoscopic approach and retrograde percutaneous sclerotization on 463 cases

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    Objectives: To determine whether there are differences in sperm parameters improvement after different varicocele correction techniques. To determine the role of age in sperm parameters improvement. Methods: 2 different European centers collected pre- and postoperative sperm parameters of patients undergoing varicocele correction. Among 463 evaluated patients, 367 were included. Patients were divided in procedure-related and age-related groups. Ivanissevich inguinal open surgical procedure (OS), lymphatic-sparing laparoscopic approach (LSL) and retrograde percutaneous transfemoral sclerotization (RPS) were performed. As outcome measurements sperm count (millions/mL, SC) and percentage of mobile sperms were analyzed. Univariate and multivariate regression between the defined groups; bivariate regression analysis between age and sperm count and motility. Results: Number of patients: OS 78; LSL 85; RPS 204. Mean age 30.2 (SD 6.83); postoperative SC increased from 18.2 to 30.1 (CI 95% 27.3-32.9; p &lt; 0,001); motility from 25.6 to 32.56% (30.9-34.2; p &lt; 0.001). OS: SC varied from 16.9 to 18.2 (p &lt; 0.001); sperm motility from 29% to 33% (p &lt; 0.001). LSL: SC from 15.5 to 17.2 (p &lt; 0.001); motility from 27 to 31% (p &lt; 0.001). RPS: SC from 18.9 to 36.2 (p &lt; 0.001); motility from 24% to 32% (p &lt; 0.001). Univariate and multivariate analysis confirmed the significant difference of SC variation in RPS, compared to the other groups (p &lt; 0.001). No significance between LSL and OS (p = 0.826). No significant differences regarding motility (p = 0.8). Conclusions: Varicocele correction is confirmed useful in improving sperm parameters; sclerotization technique leads to a better sperm improvement compared to other studied procedures; improvement in seminal parameters is not affected by age of the patients treated

    Development of a questionnaire specifically for patients with Ileal Orthotopic Neobladder (IONB)

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    The ileal orthotopic neobladder (IONB) is often used in patients undergoing radical cystectomy. The IONB allows to void avoiding the disadvantages of the external urinary diversion.In IONB patients the quality of life (QoL) appears compromised by the need to urinate voluntarily. The patients need to wake up at night interrupting the sleep-wake rhythm with consequences on social and emotional life.At present the QoL in IONB patients is evaluated by generic questionnaires. These are useful when IONB patients are compared with patients with different urinary diversions but they are less effective when only IONB patients are evaluated. To address this problem a specific questionnaire-the IONB-PRO-was developed. METHODS: A) Based on a conceptual framework, narrative-based interviews were conducted on 35 IONB patients. A basic pool of 43 items was produced and organized throughout two clinical and four QoL dimensions. An additional 15 IONB patients were interviewed for face validity testing.B) Psychometric testing was conducted on 145 IONB patients. Both classic test strategy and Rasch analysis were applied. Psychometric properties of the resulting scales were comparatively tested against other QoL-validated scales. RESULTS: The IONB-PRO questionnaire includes two sections: one on the QoL and a second section on the capability of the patient to manage the IONB. For evaluation of the QoL, three versions were delivered: 1) a basic 23-item QoL version (3 domains 23-items; alpha 0.86÷ 9.69), 2) a short-form 12-item QoL scale (alpha = 0.947), and 3) a short-form 15-item Rasch QoL scale (alpha = 0.967). Correlations of the long version scales with the corresponding dimensions of the EORTC-QLQ C30 and the EORTC-BLM30 were significant. The short forms exhibited significant correlations with the global health dimension of the EORTC-QLQ and with the urinary subscales of the EORTC-BLM30. The effect size was approximately 1.00 between patients at the 1-year follow-up period and those with 3, 5, and > 5-year follow-up periods for all scales. No relevant differences were observed between the 12-item short-form and the Rasch scale. CONCLUSIONS: The IONB-PRO long and short-forms demonstrated a high level of internal consistency and reliability with an excellent discriminanting validity

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    Tubulovasostomy in the rat. A new experimental model.

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    5Tubular patency is the primary concern in the evaluation of procedures for epididymovasostomy. The epididymal lumen easily becomes occluded or obstructed, with the resulting recurrence of azoospermia. Recently, two-layer direct anastomosis has been advocated. The aim of the present study was to present an experimental model of tubulovasostomy in the rat. Microsurgery was performed in 18 rats (16-40 X magnification). Suture material used was 11/0 Vycryl or nylon for the internal layer of the anastomosis and 10/0 Ethilon for the external layer. After 6 and 12 weeks, semen samples were obtained by electroejaculation and evaluated for sperm count and motility.nonenoneE. Belgrano;G. Carmignani;P. Puppo;F. Gaboardi;C. TrombettaBelgrano, Emanuele; G., Carmignani; P., Puppo; F., Gaboardi; Trombetta, Carl

    Percutaneous treatment of varicocele

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    Varicocele is a common finding in adolescents and adult men. Its association with male infertility has been well documented: varicoceles are reported to be present in 20-40% of infertile men. It has been demonstrated that varicocele correction leads to an improvement in the quality of semen in most cases. Percutaneous sclerotherapy is an established treatment method for varicocele performed on an outpatient basis. In our report we review our experience with venographic study and transcatheter sclerotherapy based on 560 cases of infertile patients with varicocele. Our study confirms that percutaneous therapy of varicocele may lead to improved spermatogenesis in the majority of patients
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