Publications by authors named "Rodrigo Frota"

Purpose: To describe the perioperative and oncology outcomes in a series of laparoscopic or robotic partial nephrectomies (PN) for renal tumors treated in diverse institutions of Hispanic America from the beginning of their minimally invasive (MI) PN experience through December 2014.

Methods: Seventeen institutions participated in the CAU generated a MI PN database. We estimated proportions, medians, 95 % confidence intervals, Kaplan-Meier curves, multivariate logistic and Cox regression analyses.

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The implementation of RALP program is usually associated with a steep learning curve (LC). Fellows are proctored for few cases, with long operating times, inferior outcomes and an increased number of complications. We report the initial results of 100 RALP procedures performed in Rio de Janeiro, Brazil, with the implementation of a structured program.

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Purpose: The aim of this paper is to analyze if the anatomy type of the collector system (CS) limits the accessibility of flexible ureteroscopy (FUR) in the lower pole.

Methods: We analyzed the pyelographies of 51 patients submitted to FUR and divided the CS into four groups: A1-kidney midzone (KM) drained by minor calices (Mc) that are dependent on the superior or on the inferior caliceal groups; A2-KM drained by crossed calices; B1-KM drained by a major caliceal group independent both of the superior and inferior groups, and B2-KM drained by Mc entering directly into the renal pelvis. We studied the number of calices, the angle between the lower infundibulum and renal pelvis, and the angle between the lower infundibulum and the inferior Mc.

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Purpose: We present a large series of minimally invasive nephron sparing surgery outcomes in solitary kidneys with a focus on treatment selection criteria, and oncological and functional outcomes.

Materials And Methods: Of 1,019 patients who underwent minimally invasive nephron sparing surgery since September 1997 at our institution 36, 36 and 29 underwent laparoscopic partial nephrectomy, cryoablation and radio frequency ablation, respectively, for tumors in a solitary kidney. Data, including patient and tumor characteristics, surgery details, complications, and postoperative renal function and intermediate term oncological outcomes in each patient, were obtained by telephone contact or from charts.

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Objective: To determine whether data obtained from preoperative prostate needle biopsy can predict the laterality of significant cancer and positive surgical margins on final-specimen pathology after laparoscopic radical prostatectomy (LRP).

Patients And Methods: Data from 490 patients undergoing LRP by one surgeon were reviewed retrospectively. The demographic characteristics, intraoperative data and pathological results were analysed.

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Sebaceous carcinoma is a very aggressive malignant tumor, derived from the adnexal epithelium of sebaceous glands. Extraocular sebaceous carcinoma is a very uncommon neoplasm usually localized on the head and neck. To our knowledge, there are only 2 previously reported cases of sebaceous carcinoma on the penis.

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Purpose: To report our initial experiences with laparoscopic partial cystectomy for urachal and bladder malignancy.

Materials And Methods: Between March 2002 and October 2004, laparoscopic partial cystectomy was performed in 6 cases at 3 institutions; 3 cases were urachal adenocarcinomas and the remaining 3 cases were bladder transitional cell carcinomas. All patients were male, with a median age of 55 years (45-72 years).

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Purpose: Patients with muscle-invasive bladder cancer and concomitant upper urinary tract tumors may be candidates for simultaneous cystectomy and nephroureterectomy. Other clinical conditions such as dialysis-dependent end-stage renal disease and non-functioning kidney are also indications for simultaneous removal of the bladder and kidney. In the present study, we report our laparoscopic experience with simultaneous laparoscopic radical cystectomy (LRC) and nephroureterectomy.

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Introduction: To review the current status of laparoscopic radical prostatectomy (LRP) and robotic assisted radical prostatectomy (RALP) in relation to radical retropubic prostatectomy (RRP) in the management of localized prostate cancer.

Materials And Methods: Between 1982 and 2007 published literature was reviewed using the National Library of Medicine database and the following key words: retropubic, laparoscopic, robotic, robot-assisted, and radical prostatectomy. Special emphasis was given to the technical and cost considerations as well as operative, functional and oncologic outcomes.

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Objectives: Previous renal surgery has been considered a relative contraindication to laparoscopic partial nephrectomy (LPN) because of perirenal surgical adhesions. We present our experience with LPN in patients with previous ipsilateral renal surgery.

Methods: Of 679 patients undergoing LPN for a renal mass from September 1999 to November 2006, 25 (3.

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Background: Management of multiple ipsilateral renal tumors is a dilemma in clinical practice. The effects of minimally invasive nephron-sparing procedures in this group of patients have not been assessed.

Objective: To evaluate the technical feasibility and outcomes of laparoscopic partial nephrectomy (LPN) and laparoscopic cryoablation (LCA) for multiple ipsilateral renal tumors.

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Purpose: We evaluate our experience with laparoscopic partial nephrectomy to determine risk factors for postoperative complications.

Materials And Methods: A prospectively maintained database of 507 laparoscopic partial nephrectomy procedures since September 1999 was retrospectively analyzed with emphasis on postoperative complications. Severity of complications was graded using a 5-tiered scale based on National Cancer Institute Common Toxicity Criteria Version 2.

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Purpose: To our knowledge the outcomes of laparoscopic renal oncological surgery in patients with major aortic and/or inferior vena caval pathology are unknown. We present our experience spanning an 8-year period.

Materials And Methods: From March 1998 to October 2006, 1,826 laparoscopic renal procedures were performed for tumor.

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Objective: To identify differences in operative outcome between methods of controlling the dorsal vein complex during laparoscopic prostatectomy, i.e. suture ligature or stapling with an endoscopic stapler (Endopath ETS Flex 45 linear stapler; Ethicon, Cincinnati, OH, USA).

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Objective: To evaluate the effect of prostate weight on perioperative, functional and oncological outcomes after laparoscopic radical prostatectomy (LRP).

Patients And Methods: Between January 2003 and January 2006, 327 patients had LRP by one surgeon, 193 of whom were available for analysis. Patients were stratified into three groups on the basis of pathological prostate weight, i.

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