Publications by authors named "Youn-Soo Jeon"

Background: Ubiquitin-specific protease 11 (USP11), one of the principal phosphatase and tensin homolog (PTEN) deubiquitinases, can reserve PTEN polyubiquitination to maintain PTEN protein integrity and inhibit PI3K/AKT pathway activation. The aim of the current study was to investigate the associations between immunohistochemical USP11 staining intensities and prognostic indicators in individuals with prostate cancer.

Methods: Tissue microarrays (TMAs) were performed for human prostate cancer and normal tissue (control) samples.

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Purpose: Ubiquitin-conjugating enzyme E2 C (UBE2C) is known to show a causal relationship with cancer development and advancement. The role of UBE2C is to control the mitotic spindle checkpoint. Excess UBE2C has been identified in patients with advanced prostate cancer.

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Purpose: Healthy aging is an important concern in an aging society. Although the causal relationship between hypogonadism and erectile dysfunction in elderly men remains unclear, many physicians have achieved positive results after implementing exogenous testosterone supplementation therapy in patients with normal or slightly low blood testosterone. The purpose of this study was to conduct a systematic review and meta-analysis on whether testosterone replacement therapy (TRT) could improve sexual function in the elderly, as reported recently.

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Background: The mTOR signaling pathway is inactivated by AMPK's tumor-suppressing function. It is recognized that ubiquitin conjugating enzyme 2O (UBE2O), which directly targets AMPK for ubiquitination and degradation, is intensified in human cancers.

Methods: This study investigated the clinical data about prostate cancer.

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Purpose: Late onset hypogonadism (LOH) is an age-dependent reduction of testosterone associated with alterations of metabolic profile, including glucose control, insulin sensitivity, and lipid profile. The purpose of this study was to investigate the efficacy of testosterone replacement therapy (TRT) for treating metabolic disturbances through a meta-analysis of randomized clinical trials (RCTs).

Methods: A systematic review of literature published from 1964 to November, 2019 was performed using the PubMed/Medline, Embase, and Cochrane databases.

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Background: Several approaches for urethral catheterization after the failure of initial urethral catheterization have been introduced. However, standard procedures regarding what should be done after failed conventional urethral catheterization have been not established. Therefore, we investigated the clinical efficacy of retrograde urethrography (RGU)-assisted urethral catheterization after failed conventional urethral catheterization.

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Background: The present study aimed to investigate whether dual-phase F-18 sodium-fluoride (NaF) positron emission tomography/computed tomography (PET/CT) could improve the diagnostic accuracy of detecting bone metastasis in cancer patients with a solitary bone lesion compared to conventional F-18 NaF PET/CT.

Methods: We retrospectively enrolled 113 cancer patients who underwent dual-phase F-18 NaF PET/CT for the differential diagnosis of a solitary bone lesion seen on bone scintigraphy. According to the dual-phase PET/CT protocol, an early-phase scan was acquired immediately after radiotracer injection and a conventional F-18 NaF PET/CT scan was performed.

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This study aimed to assess the prognostic value of computed tomography (CT)-attenuation and F-fluorodeoxyglucose (FDG) uptake of periprostatic adipose tissue (PPAT) for predicting disease progression-free survival (DPFS) in patients with prostate cancer. Seventy-seven patients with prostate cancer who underwent staging FDG positron emission tomography (PET)/CT were retrospectively reviewed. CT-attenuation (HU) and FDG uptake (SUV) of PPAT were measured from the PET/CT images.

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Although there is no comparison study about the learning curves for holmium laser enucleation and other surgical modalities to treat benign prostatic hyperplasia (BPH), beginner urologists are hesitant to perform holmium laser enucleation because of its steep learning curve. Therefore, we investigated the degree of surgical difficulty of holmium laser enucleation by comparing its learning curve with that of transurethral resection. Two beginner urologists performed surgery for BPH: H.

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We aimed to evaluate the current nationwide trend, efficacy, safety, and quality of life (QoL) profiles of hormone treatment in real-world practice settings for prostate cancer (PCa) patients in Korea. A total of 292 men with any biopsy-proven PCa (TanyNanyMany) from 12 institutions in Korea were included in this multi-institutional, observational study of prospectively collected data. All luteinizing hormone-releasing hormone (LHRH) agonists were allowed to be investigational drugs.

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A follow-up (18)F-fluorodeoxyglucose ((18)F-FDG) PET/CT scan of a 57-year-old asymptomatic male who had undergone total thyroidectomy for thyroid cancer revealed a 5.0 × 4.0-cm, well-defined, ovoid-shaped mass around the left adrenal gland without definite FDG uptake.

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Purpose: Although transurethral resection of the prostate (TURP) is considered the standard surgical treatment for benign prostatic hyperplasia (BPH), Holmium laser enucleation of the prostate (HoLEP) is replacing TURP. We compared TURP with HoLEP with matching for prostate size.

Materials And Methods: We retrospectively reviewed the medical charts of patients who underwent TURP and HoLEP performed by one surgeon at our institute.

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Purpose: We evaluated the safety and accuracy of ultrasonography-guided percutaneous core biopsy collection in patients with renal masses.

Materials And Methods: From June 2008 to August 2012, 30 percutaneous core biopsies of renal masses were performed. The biopsies obtained were small tumors (<4 cm) with ambiguous radiologic findings or that met classic renal biopsy indications.

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Pulmonary sequestration is a rare cystic malformation composed of bronchopulmonary tissue that is discontinuous from the tracheobronchial tree and has an anomalous systemic blood supply. We present a case of a 40-year old male who presented with an extralobar pulmonary sequestration and underwent a laparoscopic retroperitoneal mass excision. Preoperative imaging revealed a large 11.

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Schwannomas are benign tumors that arise from the neural sheath of Schwann cells. Renal schwannomas are extremely rare and are commonly misdiagnosed as renal cell carcinoma, which typically results in a radical nephrectomy. We present a case of a renal schwannoma that mimics a renal pelvis tumor.

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Anterior urethral valve is a rare congenital anomaly that can cause obstructive uropathy. Herein, we report a case of an anterior urethral valve that led to the development of febrile urinary tract infection in a neonate.

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Purpose: During laparoscopic partial cystectomy (LPC), lesion identification is essential to help to determine the appropriate bladder incisions required to maintain adequate resection margins. The inability to use tactile senses makes it difficult for surgeons to locate lesions during laparoscopic surgery. Endoscopic India ink marking techniques are often used in laparoscopic gastroenterological surgery.

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Objective: • To investigate the oncological efficacy of retroperitoneal laparoscopic radical nephrectomy (RLRN) compared with transperitoneal laparoscopic radical nephrectomy (TLRN) for the management of clear-cell renal cell carcinoma (RCC).

Patients And Methods: • With emphasis on survival and disease recurrence, a retrospective analysis was made of 580 patients who underwent TLRN (472 patients) or RLRN (108 patients) at 23 institutions between January 1997 and December 2007. • Inclusion criteria were clear-cell RCC, stage pT1 to pT2 without any nodal involvement, and metastasis.

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Purpose: We analyzed a series of patients who had undergone laparoscopic partial nephrectomies (LPNs) and open partial nephrectomies (OPNs) to compare outcomes of the two procedures in patients with pathologic T1a renal cell carcinomas (RCCs).

Materials And Methods: From January 1998 to May 2009, 417 LPNs and 345 OPNs were performed on patients with small renal tumors in 15 institutions in Korea. Of the patients, 273 and 279 patients, respectively, were confirmed to have pT1a RCC.

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Objectives: Prostate-specific antigen (PSA) levels are affected by many factors. Metabolic syndrome (MS) is a common metabolic disorder related to the increasing prevalence of obesity. The relationship between MS and PSA is currently unknown, however.

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We evaluated whether iatrogenic ureteral injuries recognized late after obstetric and gynaecological surgery were likely to resolve with minimally invasive strategies. We reviewed our records of 30 patients with surgical ureteral injuries diagnosed after obstetric and gynaecological operations. From collected data, the outcome of minimally invasive strategies and operative repair was evaluated and compared.

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Objectives: To investigate whether the incidence of urethral stricture is different according to the primary mode of management, we retrospectively reviewed the record of patients with bulbous urethral disruption by external blunt trauma.

Methods: A total of 95 patients with blunt bulbous urethral injuries were included in the study. Sixty-five underwent immediate urethral realignment and 30 underwent initial suprapubic tube placement followed by delayed management.

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Background: We retrospectively reviewed the records of patients with traumatic posterior urethral injuries, analyzed postoperative findings to compare the results of the primary mode of management, and evaluated whether the Colapinto and McCallum classification system was valuable for predicting the complications.

Methods: 55 patients with traumatic posterior urethral injuries were included in the study. A total of 35 patients underwent immediate realignment over a Foley catheter including direct Foley catheter insertion (group 1) and 20 underwent initial suprapubic tube placement followed by delayed urethroplasty (group 2).

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Objectives: To examine the impact of urinary symptoms on bothersomeness and quality of life among young men in a community.

Methods: The National Institutes of Health-Chronic Prostatitis Symptom Index was used to identify men with urinary symptoms. The questionnaire also queried about sociodemographic characteristics.

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Aim: To help clarifying the possibility of connective-tissue diseases in men with penile or testicular prostheses.

Methods: Eight patients underwent inflatable penile prostheses and 15, testicular prostheses consented to the study. Their medical records were reviewed and a follow-up interview and physical and serological examinations were performed.

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