Publications by authors named "Omer B Argun"

Background: The aim of this study was to investigate the diagnostic performance of mpMRI for detecting cribriform pattern prostate cancer.

Materials And Methods: This study retrospectively enrolled 33 patients who were reported cribriform pattern prostate cancer at final pathology. The localization, grade and volumetric properties of the dominant tumors and areas with cribriform pattern at the final pathological specimens were recorded and the diagnostic value of mpMRI was evaluated on the basis of the cribriform morphology detection rate.

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Introduction: The OSNA technique is based on reverse transcription loop-mediated DNA amplification for the detection of cytokeratin 19 (CK19) messen-ger RNA (mRNA). The purpose of our paper, which represents the first study in the literature, is to test the accuracy of this method in the detection of lymph node metastases in patients undergoing robotic radical prostatectomy with lymph node dis-section.

Methods: Our cohort consisted of patients that have undergone robotic radical prostatectomy with extended lymph node dissec-tion.

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Objective: To evaluate the impact of Double J stent (DJS) insertion during open partial nephrectomy (OPN) on postoperative prolonged urinary leakage.

Materials And Methods: A retrospective study was made in consecutive cases of OPN performed between 2002 and 2020 for localized kidney tumors at our tertiary center. Urinary leakage was defined as drainage > 72 hours after surgery by biochemical analysis consistent with urine or radiographic evidence of urine leakage.

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Purpose: In this study, we assessed the performance of apparent diffusion coefficient (ADC) and diffusion-weighted imaging (DWI) metrics and their ratios across different magnetic resonance imaging (MRI) acquisition settings, with or without an endorectal coil (ERC), for the evaluation of prostate cancer (PCa) aggressiveness using whole-mount specimens as a reference.

Methods: We retrospectively reviewed the data of prostate carcinoma patients with a Gleason score (GS) of 3+4 or higher who underwent prostate MRI using a 3T unit at our institution. They were divided into two groups based on the use of ERC for MRI acquisition, and patients who underwent prostate MRI with an ERC constituted the ERC (n = 55) data set, while the remaining patients accounted for the non-ERC data set (n = 41).

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Purpose: To test the efficacy and safety profile of robotic radical nephroureterectomy compared to the open approach.

Methods: We enrolled 45 consecutive patients who suffered from non-metastatic, upper urinary tract urothelial carcinoma from September 2019 to March 2021 and underwent radical nephroureterectomy. Patients were divided in two groups: group A consisted of 29 patients (open approach) and group B consisted of 16 patients (robotic approach).

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Article Synopsis
  • This study examines the outcomes of 52 patients who underwent "off-clamp" robot-assisted partial nephrectomy between April 2008 and March 2020, focusing on factors like renal function and complication rates.
  • The criteria for achieving trifecta outcomes included negative surgical margins, less than 15% decrease in eGFR post-surgery, and no significant complications (grade ≥2).
  • Ultimately, 83% of the patients (43 out of 52) achieved trifecta outcomes, highlighting the benefits of this surgical approach for preserving renal function.
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Objective: To investigate the impact of refractive errors on binocular visual acuity while using the Da Vinci SI robotic system console.

Methods: Eighty volunteers were examined on the Da Vinci SI robotic system console by using a near vision chart. Refractive errors, anisometropia status, and Fly Stereo Acuity Test scores were recorded.

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Prostate cancer patients' management demands prioritization, adjustments, and a tailored approach during the unprecedented SARS-CoV-2 pandemic. Benefit of care from treatment must be carefully weighed against the potential of infection and morbidity from COVID-19. Furthermore, urologists need to be cognizant of their obligation for wise consumption of restricted healthcare resources and protection of the safety of their coworkers.

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Objective: To report the first prospective comparative analysis of robot-assisted (RASP) vs open simple prostatectomy (OSP) for large prostate glands.

Materials And Methods: We prospectively analysed 41 patients who underwent surgery for benign prostatic hyperplasia between 2014 and 2017 at one of two university institutions. Patients were grouped according to the procedure (OSP or RASP) and matched in terms of age, prostate volume, body mass index and prostate-specific antigen level.

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Purpose: To demonstrate a novel frozen section analysis technique during robot assisted radical prostatectomy with 2 distinct advantages: evaluation of the entire circumference and easier reconstruction for whole mount evaluation.

Material And Methods: Istanbul Preserve was performed on patients who underwent robotic prostatectomy with nerve sparing between 10/2014 and 7/2016. Gland was sectioned at 3-4mm intervals from apex to bladder neck.

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Objective: To evaluate early continence rates with a novel modified vesicourethral anastomosis technique based on prevention of urethral retraction using anastomosis sutures as stay sutures (PURS) during robot-assisted radical prostatectomy.

Materials And Methods: Sixty patients operated by a single surgeon were enrolled and data collected prospectively. This cohort was compared with another consecutive 60 patients operated with standard anastomosis.

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Background And Objectives: "Trifecta" in partial nephrectomy consists of negative surgical margins, minimal renal function decrease and absence of complications. In the present article, our single-center robot-assisted partial nephrectomy (RAPN) experience in T1b renal masses is reported in terms of strict Trifecta outcomes.

Methods: This is a retrospective analysis of patients with a tumor diameter between 4 and 7 cm (stage T1b), who underwent RAPN by a single surgeon.

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Background And Objective: Robotic upper urinary tract surgery is in most of the cases performed utilizing a standard 5 port configuration. Fewer ports can potentially produce a less invasive operation. Taking in consideration the above we report a novel technique for robot assisted laparoscopic partial nephrectomy utilizing fewer ports and we test its feasibility and safety profile.

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Objective: To report our initial experience on robot-assisted radical nephroureterectomy, using the da Vinci Xi robotic system without patient or port repositioning.

Materials And Methods: The patients were in a modified flank position. A Bugbee electrode was used to cauterize and mark the ureteral orifice, aiding in the final robotic excision of the distal ureter.

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Introduction: Robot-assisted bladder diverticulectomy (RABD) through a technique for easier identification of diverticulum along with concomitant management of bladder outlet obstruction (BOO) utilizing a combination of transurethral prostatectomy (TUR-P) and photoselective vaporization of prostate (PVP) is presented.

Materials And Methods: Between 2008 and 2015, 9 patients underwent RABD with concurrent treatment of BOO. Diverticula were identified by a technique of catheterizing the diverticulum and the bladder simultaneously and individually.

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Objective: To determine an accurate incidence of lymphocele formation and its sequela after robot-assisted radical prostatectomy (RARP) and extended lymph node dissection (eLND) in a contemporary prostate cancer cohort.

Patients And Method: Consecutive patients who underwent RARP and eLND and had a minimum follow-up of 3 months were included. All surgeries were performed by one surgeon via a transperitoneal approach, with patients uniformly receiving low-molecular-weight heparin.

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Article Synopsis
  • The study examined the feasibility and outcomes of performing concomitant inguinal hernia repairs during robot-assisted radical prostatectomy (RARP) using a nonprosthetic tissue-based technique, involving 1,005 patients from 2005 to 2015.
  • It identified 29 patients who underwent both RARP and hernia repair, finding similar operative times and minimal blood loss when compared to a matched control group, with no significant complications or hernia recurrences reported.
  • The authors concluded that simultaneous hernia repair during RARP is safe and can reduce postoperative risks, emphasizing the effectiveness of the modified tissue-based repair method.
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Purpose: We evaluated the internal and construct validity of an assessment tool for cystoscopic and ureteroscopic cognitive and psychomotor skills at a multi-institutional level.

Materials And Methods: Subjects included a total of 30 urology residents at Ohio State University, Columbus, Ohio; Penn Presbyterian Medical Center, Philadelphia, Pennsylvania; and Mayo Clinic, Rochester, Minnesota. A single external blinded reviewer evaluated cognitive and psychomotor skills associated with cystoscopic and ureteroscopic surgery using high fidelity bench models.

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Background: Cystadenoma is an extremely rare benign tumor of the seminal vesicle. Diagnosis of these tumors and differential diagnosis from malignant ones may be challenging since most of the time symptoms do not occur. Management of these tumors remains debatable due to the limited data in the literature.

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Obtaining accurate understanding of three dimensional structures and their relationships is important in learning human anatomy. To leverage the learning advantages of using both physical and virtual models, we built a hybrid platform consisting of virtual and mannequin pelvis, motion tracking interface, anatomy and pathology knowledge base. The virtual mentorship concept is to allow learners to conveniently manipulate and explore the virtual pelvic structures through the mannequin model and VR interface, and practice on anatomy identification tasks and pathology quizzes more intuitively and interactively than in a traditional self-study classroom, and to reduce the demands of access to dissection lab or wet lab.

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