Publications by authors named "George Daniel Radavoi"

Radical cystectomy with ileal conduit urinary diversion (Bricker technique) remains the standard treatment for localized muscle-invasive bladder cancer (MIBC), as well as for high-risk non-muscle-invasive bladder cancer (NMIBC). Amid the transition toward minimally invasive techniques, comparing laparoscopic radical cystectomy (LRC) with robot-assisted radical cystectomy (RARC) becomes essential, particularly regarding perioperative morbidity and postoperative health-related quality of life. However, real-world data from Eastern Europe remain limited.

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The formation of kidney stones is a complex biologic process involving interactions among genetic, anatomic, dietary, and environmental factors. Traditional lithogenic models were based on urine supersaturation in relation to the activity of crystallization promoters and inhibitors. However, modern research has added new principles such as the "renal epithelial cell response" and the role of inflammation and oxidative stress leading to the development of a "multi-hit hypothesis".

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Radical cystectomy (RC) with pelvic lymphadenectomy remains the standard therapeutic approach in the treatment of muscle-invasive bladder cancer (MIBC). The impact of urinary diversion type on postoperative health-related quality of life (HRQoL) remains a debated topic, especially in the context of Eastern European clinical practice. Objective: This retrospective, observational, multicentric study aimed to compare the quality of life in patients undergoing RC followed by either simple cutaneous ureterostomy (SCU) or non-continent ileal conduit (Bricker), across two academic centers in Romania, utilizing different surgical approaches.

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Muscle-invasive bladder tumors (MIBT) usually require radical cystectomy (RC) followed by urinary diversion to maintain urinary flow. The two main methods used are simple direct cutaneous ureterostomy (SDCU) and Bricker ileal conduit diversion (BICD), each with distinct advantages and disadvantages. This study compares the outcomes of these two techniques across two university centers in Romania, with each center employing a different surgical approach Material and A retrospective study was conducted on 64 patients with MIBT, divided into two equal groups.

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Article Synopsis
  • The original publication discusses the key themes and findings of the research conducted, highlighting its significance in the field.
  • It outlines the methodology used for data collection and analysis, providing insights into the validity of the results.
  • The conclusion emphasizes the implications of the study and encourages future research on related topics.
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  • Challenges in diagnosing renal cell carcinoma (RCC) using CT imaging include differentiating between benign and malignant tissues and identifying subtypes, prompting the development of an algorithm to enhance diagnosis and treatment for better patient outcomes.
  • The study employs advanced methods using a Convolutional Neural Network from the European Deep-Health toolkit, leveraging U-net for image segmentation and resnet101 for classification, evaluating the model's effectiveness through various metrics.
  • Results show high accuracy in kidney segmentation (0.84) and tumor classification (mean Dice score of 0.675), with the model achieving an impressive accuracy of 0.885 in classifying RCC, suggesting significant potential for improving kidney pathology diagnosis.
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  • Researchers investigated the potential of preoperative C-reactive protein (CRP) levels as a tumor marker for Grawitz tumors, specifically clear cell renal cell carcinoma (RCC).
  • A study of 96 patients showed a correlation between larger renal tumors and higher preoperative CRP levels, but other factors like age and TNM stage did not show significant statistical relationships with CRP changes.
  • The findings suggest that monitoring CRP levels may help in assessing tumor aggressiveness and treatment effectiveness, though more research is needed to clarify the connection between CRP and RCC.
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  • The study investigates the rise of infectious complications associated with percutaneous nephrolithotomy (PCNL), highlighting that infections are becoming more common with these procedures.
  • A systematic search of medical databases yielded 18 relevant articles covering 7,507 patients, all of whom received antibiotic prophylaxis and some were treated for infections before surgery.
  • Findings indicate that longer operative times, positive preoperative urine cultures, and multi-tract PCNL significantly increase the risk of developing postoperative sepsis/SIRS, while factors like age and body mass index show no notable impact on patient outcomes.
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Objective: To ascertain the existence of a connection between Guy's stone score and infectious complications after percutaneous nephrolitholapaxy.

Methods: The retrospective cohort, multi-centre study was conducted in the urology departments of Prof Dr Theodor Burghele Clinical Hospital and C.I.

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The purpose of the study was to establish whether shock wave lithotripsy (SWL) is a potential harmful first-line treatment for ureteric stones where ureteroscopy (URS) is necessary as a second-line treatment. Medical records of patients with ureteric stones who underwent either URS as the only therapy applied or SWL followed by URS over two years were retrospectively evaluated. In total, 158 patients were included: 79 patients in Group A (no SWL) and 79 in Group B (prior SWL before URS).

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The incidence of nephrolithiasis is in full expansion, its etiology being frequently associated with lifestyle changes. The objective of this retrospective study, carried out between April and December 2019, was to identify the correlations of the known lithogenic factors with the chemical structure of the calculi in the patients from the North-Eastern region of Romania. The results obtained after the data analysis of our LAMPA questionnaire (L - liquids, A - antecedents, M - medication, P - associated pathologies, A - aliments) made in evidence a statistically relevant relationship between the heredocollateral history of lithiasis and calcium oxalate dihydrate (COD) calculi, hypertension and calcium oxalate monohydrate (COM) stones, uric lithiasis and diabetes, COD, and obesity, between predominantly uric lithiasis and meat or meat-derived products consumption, between frequent potato consumption and COD stones and the frequently consume of dairy products and predominantly COM calculi.

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We assessed the effects of antiandrogen therapy on ECG parameters of ventricular repolarization related to arrhythmic risk in 35 patients aged 70.3 ± 7 years with advanced prostate cancer treated with degarelix associated with enzalutamide (group A, 26 patients) or degarelix monotherapy (group B, 9 patients). We analyzed Fridericia corrected Q-T interval (QTc), Q-T dispersion (QTd), J-Tpeak interval (JTp), mean and maximum Tpeak-Tend interval (Tpe) and Tpe/QT ratio, Tpeak-Tend dispersion (Tped), index of cardio-electrophysiological balance (iCEB) from ECG tracings, and occurrence of ventricular premature beats (VPB) recorded by Holter ECG, before initiation of medication (M0) and after 6 months of treatment (M1).

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Purpose: PI3K-Akt-mTOR and androgen receptor (AR) signaling are commonly aberrantly activated in metastatic castration-resistant prostate cancer (mCRPC), with PTEN loss associating with poor prognosis. We therefore conducted a phase Ib/II study of the combination of ipatasertib, an Akt inhibitor, with the CYP17 inhibitor abiraterone in patients with mCRPC. Patients were randomized 1:1:1 to ipatasertib 400 mg, ipatasertib 200 mg, or placebo, with abiraterone 1,000 mg orally.

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Objective: To investigate the correlation among clinical parameters, risk factors, outcomes and costs in the context of patients with infected hydronephrosis.

Methods: This retrospective, multi-centric study was conducted in three Romanian academic urology departments, and comprised data of patients with infected hydronephrosis treated between July 2013 and July 2014. Based on per-patient hospitalisation costs, the participants were divided into three groups: group A: cost less than 500 euros), group B: between 500 and 1,000 euros, and group C: over 1,000 euros).

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The aim of this study is to examine a large dataset of single nucleotide polymorphism known to be associated with prostate cancer from previous genome-wide association studies and create a dataset of single nucleotide polymorphisms that can be used in replication studies for the Romanian population. This study will define a list of markers showing a significant association with this phenotype. We propose the results of this study as a starting point for any Romanian genome-wide association studies researching the genetic susceptibility for prostate cancer.

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