2022
Survival of nonseminomatous germ cell tumors in pediatric patients and young adults – A stage group stratified analysis
Srivastava A, Patel H, Koehne E, Gupta G, Drachtman R, Pierorazio P, Bagrodia A, Elsamra S, Kim I, Ghodoussipour S, Singer E, Jang T, Patel H, Barone J. Survival of nonseminomatous germ cell tumors in pediatric patients and young adults – A stage group stratified analysis. Urologic Oncology Seminars And Original Investigations 2022, 40: 169.e1-169.e12. PMID: 35144865, PMCID: PMC8960351, DOI: 10.1016/j.urolonc.2021.12.012.Peer-Reviewed Original ResearchConceptsNonseminomatous germ cell tumorsCancer-specific survivalGerm cell tumorsCell tumorsStage groupPediatric patientsAdolescent patientsYoung adultsStage IAdvanced nonseminomatous germ cell tumorsSurvival analysisAge groupsWorse cancer-specific survivalCox proportional hazards modelTesticular germ cell tumorsEnd Results (SEER) databaseExcellent survival outcomesStage III tumorsExcellent oncologic outcomesImportant prognostic factorKaplan-Meier curvesCommon solid malignancyProportional hazards modelNSGCT patientsOncologic outcomesAssociation of Lymph Node Count and Survival after Primary Retroperitoneal Lymphadenectomy for Nonseminomatous Testicular Cancer
Patel H, Srivastava A, Kim S, Patel H, Pierorazio P, Bagrodia A, Masterson T, Ghodoussipour S, Kim I, Singer E, Jang T. Association of Lymph Node Count and Survival after Primary Retroperitoneal Lymphadenectomy for Nonseminomatous Testicular Cancer. Journal Of Urology 2022, 207: 1057-1066. PMID: 34978466, DOI: 10.1097/ju.0000000000002369.Peer-Reviewed Original ResearchConceptsPrimary retroperitoneal lymph node dissectionRetroperitoneal lymph node dissectionNonseminomatous germ cell tumorsLymph node countLymph nodesOverall survivalTherapeutic implicationsTesticular nonseminomatous germ cell tumorsFive-year OS ratesHigher lymph node countLymph node-positive diseasePrimary retroperitoneal lymphadenectomyClinical stage INational Cancer DatabaseLymph node dissectionNode-positive diseaseKaplan-Meier methodNonseminomatous testicular cancerCS IGerm cell tumorsLogistic regression analysisNode countImproved OSNode dissectionRetroperitoneal lymphadenectomy
2021
Comparative Outcomes of Salvage Retzius-Sparing versus Standard Robotic Prostatectomy: An International, Multi-Surgeon Series
Kowalczyk K, Madi R, Eden C, Sooriakumaran P, Fransis K, Raskin Y, Joniau S, Johnson S, Jacobsohn K, Galfano A, Bocciardi A, Hwang J, Kim I, Hu J. Comparative Outcomes of Salvage Retzius-Sparing versus Standard Robotic Prostatectomy: An International, Multi-Surgeon Series. Journal Of Urology 2021, 206: 1184-1191. PMID: 34181471, DOI: 10.1097/ju.0000000000001939.Peer-Reviewed Original ResearchConceptsRobotic-assisted radical prostatectomyAssisted radical prostatectomyConsole timeRadical prostatectomyPrimary treatmentStereotactic body radiation therapyFeasible salvage optionNonsurgical primary treatmentPostoperative pad useUrinary function outcomesRisk of incontinenceKaplan-Meier curvesBody radiation therapyProportional hazards modelLonger console timeT-testStudent's t-testPostoperative complicationsMedian followupOncologic outcomesPerioperative dataBlood lossComplication rateSalvage optionFunction outcomes
2020
Individual and joint effects of metformin and statins on mortality among patients with high‐risk prostate cancer
Tan X, E J, Lin Y, Rebbeck T, Lu S, Shang M, Kelly W, D'Amico A, Stein M, Zhang L, Jang T, Kim I, Demissie K, Ferrari A, Lu‐Yao G. Individual and joint effects of metformin and statins on mortality among patients with high‐risk prostate cancer. Cancer Medicine 2020, 9: 2379-2389. PMID: 32035002, PMCID: PMC7131852, DOI: 10.1002/cam4.2862.Peer-Reviewed Original ResearchConceptsHigh-risk PCaPCa mortalityCause mortalityPopulation-based retrospective cohort studyHigh-risk prostate cancerCox proportional hazards modelRetrospective cohort studyHigh-risk patientsFirst human studyProstate cancer metastasisCause of deathProportional hazards modelPre-clinical studiesMetformin useCohort studyProstate cancerStatinsHazards modelHuman studiesPatientsMetforminSignificant associationMortalityPropensity scoreCancer metastasis
2017
Local Therapy Improves Overall Survival in Patients With Newly Diagnosed Metastatic Prostate Cancer
Parikh R, Byun J, Goyal S, Kim I. Local Therapy Improves Overall Survival in Patients With Newly Diagnosed Metastatic Prostate Cancer. The Prostate 2017, 77: 559-572. PMID: 28093791, DOI: 10.1002/pros.23294.Peer-Reviewed Original ResearchConceptsNational Cancer DatabaseMetastatic prostate cancerLocal therapyOverall survivalProstate cancerRadiation therapyMultivariable Cox proportional hazards modelsLower co-morbidity scoreFive-year overall survivalCox proportional hazards modelAcademic/research programCo-morbidity scoreSuperior overall survivalNode-negative statusProspective clinical trialsKaplan-Meier methodLower T stagePatterns of careProportional hazards modelPropensity-score matchingPrimary diseaseT stageMedicare insuranceGleason scoreCancer Database
2016
Long-Term Outcomes of Using Hyaluronic Acid-Carboxymethylcellulose Adhesion Barrier Film on the Neurovascular Bundle
Patel R, Modi P, Elsamra S, Kim I. Long-Term Outcomes of Using Hyaluronic Acid-Carboxymethylcellulose Adhesion Barrier Film on the Neurovascular Bundle. Journal Of Endourology 2016, 30: 709-713. PMID: 27072291, DOI: 10.1089/end.2016.0046.Peer-Reviewed Original ResearchMeSH KeywordsCarboxymethylcellulose SodiumErectile DysfunctionHumansHyaluronic AcidKaplan-Meier EstimateLaparoscopyMaleMiddle AgedNeoplasm Recurrence, LocalPenile ErectionPostoperative PeriodProspective StudiesProstate-Specific AntigenProstatectomyProstatic NeoplasmsRetrospective StudiesRobotic Surgical ProceduresTreatment OutcomeConceptsErectile functionNeurovascular bundleBiochemical recurrenceGood baseline erectile functionPreoperative prostate-specific antigenRobot-assisted laparoscopic prostatectomyBaseline erectile functionPreoperative SHIM scoreSexual Health InventoryAUA symptom scorePostoperative erectile functionKaplan-Meier analysisNerve-sparing prostatectomyProstate-specific antigenSignificant differencesMean SHIMSHIM scoreIndependent t-testMedian followOncologic outcomesConsecutive patientsOperative timeRetrospective reviewProstate sizeSymptom scores
2015
Pathological Outcome following Radical Prostatectomy in Men with Prostate Specific Antigen Greater than 10 ng/ml and Histologically Favorable Risk Prostate Cancer
Yu J, Kwon Y, Kim S, Han C, Farber N, Kim J, Byun S, Kim W, Jeon S, Kim I. Pathological Outcome following Radical Prostatectomy in Men with Prostate Specific Antigen Greater than 10 ng/ml and Histologically Favorable Risk Prostate Cancer. Journal Of Urology 2015, 195: 1464-1470. PMID: 26608903, PMCID: PMC5769700, DOI: 10.1016/j.juro.2015.11.031.Peer-Reviewed Original ResearchConceptsFavorable-risk prostate cancerRisk prostate cancerProstate-specific antigenProstate cancerSpecific antigenActive surveillancePathological outcomesAntigen groupRadical prostatectomyBiochemical recurrence-free survival rateElevated prostate-specific antigenProstate specific antigen cutoffLow-risk prostate cancerProstate-specific antigen levelRecurrence-free survival ratesFavorable risk diseaseMulti-institution databaseSpecific antigen levelsAdverse pathological outcomesTreatment of choiceDatabase of menHigh groupOncologic outcomesRisk diseaseAntigen levelsRefining the American Urological Association and American Society for Radiation Oncology guideline for adjuvant radiotherapy after radical prostatectomy using the pathologic Gleason score
Song W, Kwon Y, Jeon S, Kim I. Refining the American Urological Association and American Society for Radiation Oncology guideline for adjuvant radiotherapy after radical prostatectomy using the pathologic Gleason score. Asian Journal Of Andrology 2015, 19: 20-25. PMID: 26620454, PMCID: PMC5227667, DOI: 10.4103/1008-682x.159715.Peer-Reviewed Original ResearchMeSH KeywordsAgedDatabases, FactualDisease-Free SurvivalHumansKallikreinsKaplan-Meier EstimateMaleMargins of ExcisionMiddle AgedNeoplasm GradingNeoplasm Recurrence, LocalNeoplasm StagingPractice Guidelines as TopicProstate-Specific AntigenProstatectomyProstatic NeoplasmsRadiation OncologyRadiotherapy, AdjuvantRetrospective StudiesSocieties, MedicalUnited StatesUrologyConceptsPositive surgical marginsGleason score 6Adjuvant radiotherapyGleason score 8BCR-free survivalRadical prostatectomyBiochemical recurrenceAmerican Urological AssociationPathologic stageGleason scoreScore 6BCR rateSurgical marginsScore 8Urological AssociationPathologic Gleason score 8Multivariate Cox regression analysisPathologic Gleason scoreSurgical margin statusCox regression analysisRadiation Oncology guidelinesAmerican SocietyASTRO guidelineIndependent predictorsMargin statusSafety of Robot-Assisted Radical Prostatectomy with Pneumoperitoneum of 20 mm Hg: A Study of 751 Patients
Modi P, Kwon Y, Patel N, Dinizo M, Farber N, Zhao P, Salmasi A, Parihar J, Ginsberg S, Ha Y, Kim I. Safety of Robot-Assisted Radical Prostatectomy with Pneumoperitoneum of 20 mm Hg: A Study of 751 Patients. Journal Of Endourology 2015, 29: 1148-1151. PMID: 25891967, DOI: 10.1089/end.2015.0094.Peer-Reviewed Original ResearchConceptsRobot-assisted radical prostatectomyInsufflation pressureComplication rateHemoglobin levelsOperative timeRadical prostatectomyControl groupShort-term perioperative outcomesPostoperative hemoglobin levelsGlomerular filtration rateMean hemoglobin levelDatabase of patientsHigh complication rateNumber of patientsUse of pneumoperitoneumExperimental groupHigh insufflation pressurePerioperative outcomesRenal functionBlood lossPneumoperitoneum pressureFiltration rateSignificant short-term effectPatientsVenous oozingIncreased Expression of Androgen Receptor mRNA in Human Renal Cell Carcinoma Cells is Associated with Poor Prognosis in Patients with Localized Renal Cell Carcinoma
Ha Y, Lee G, Modi P, Kwon Y, Ahn H, Kim W, Kim I. Increased Expression of Androgen Receptor mRNA in Human Renal Cell Carcinoma Cells is Associated with Poor Prognosis in Patients with Localized Renal Cell Carcinoma. Journal Of Urology 2015, 194: 1441-1448. PMID: 25796113, DOI: 10.1016/j.juro.2015.03.078.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBiomarkers, TumorBlotting, WesternCarcinoma, Renal CellCell Line, TumorDisease ProgressionFemaleFollow-Up StudiesGene Expression Regulation, NeoplasticHumansKidney NeoplasmsMaleMiddle AgedNeoplasm StagingPrognosisReal-Time Polymerase Chain ReactionReceptors, AndrogenRetrospective StudiesRNA, NeoplasmTime FactorsYoung AdultConceptsRenal cell carcinomaAndrogen receptor mRNA expressionReceptor mRNA expression levelsCancer-specific survivalCell carcinomaCell carcinoma cell linesReceptor mRNA expressionHuman renal cell carcinoma cell linesRenal cell carcinoma cell linesAndrogen receptorMRNA expression levelsSpecific survivalCarcinoma cell linesMultivariate Cox regression analysisLocalized Renal Cell CarcinomaMRNA expressionT2 renal cell carcinomaCell linesPathological stage T1Androgen receptor expressionCox regression analysisKaplan-Meier estimatesReceptor-positive cell linesChain reactionPositive renal cell carcinomas
2014
Concern for overtreatment using the AUA/ASTRO guideline on adjuvant radiotherapy after radical prostatectomy
Kang J, Ha Y, Kim S, Yu J, Patel N, Parihar J, Salmasi A, Kim W, Kim I. Concern for overtreatment using the AUA/ASTRO guideline on adjuvant radiotherapy after radical prostatectomy. BMC Urology 2014, 14: 30. PMID: 24708639, PMCID: PMC4005471, DOI: 10.1186/1471-2490-14-30.Peer-Reviewed Original ResearchConceptsAdjuvant radiotherapyRadical prostatectomyAmerican Urological AssociationSalvage radiotherapyASTRO guidelineBiochemical progression-free survivalLocal recurrence-free survivalCox proportional hazards analysisNeoadjuvant hormonal therapyPre-operative PSAUndetectable PSA levelsProgression-free survivalPositive surgical marginsProportional hazards analysisRecurrence-free survivalMultivariate Cox analysisRadiation Oncology guidelinesSeminal vesicle invasionOutcomes of observationPathologic GSPT2-3Adjuvant treatmentHormonal therapyFree survivalPSA levelsProstate cancer bone metastases acquire resistance to androgen deprivation via WNT5A-mediated BMP-6 induction
Lee G, Kang D, Ha Y, Jung Y, Chung J, Min K, Kim T, Moon K, Chung J, Lee D, Kim W, Kim I. Prostate cancer bone metastases acquire resistance to androgen deprivation via WNT5A-mediated BMP-6 induction. British Journal Of Cancer 2014, 110: 1634-1644. PMID: 24518599, PMCID: PMC3960605, DOI: 10.1038/bjc.2014.23.Peer-Reviewed Original ResearchMeSH KeywordsAdultAndrogen AntagonistsAnilidesBone Morphogenetic Protein 6Bone NeoplasmsCell CommunicationCell Growth ProcessesCell Line, TumorHumansMaleMiddle AgedNeoplasm MetastasisNitrilesOrchiectomyProstatic Neoplasms, Castration-ResistantProto-Oncogene ProteinsReceptors, AndrogenRetrospective StudiesStromal CellsTosyl CompoundsWnt ProteinsWnt-5a ProteinConceptsCastration-resistant prostate cancerBone stromal cellsBone metastasesBone morphogenetic protein 6Castration resistanceCaP cell linesStromal cellsProstate cancerPrimary androgen deprivation therapyProstate-specific antigen progressionProstate cancer bone metastasisAndrogen-deprived mediumBone-tumor interactionAndrogen deprivation therapyFirst-line therapyCancer bone metastasisMetastatic prostate cancerAbsence of androgenAndrogen-depleted conditionsNF-κB pathwayCell linesPolymerase chain reaction arrayBMP-6 expressionAdvanced CaPDeprivation therapy
2013
Comprehensive Analysis of Sexual Function Outcome in Prostate Cancer Patients After Robot-Assisted Radical Prostatectomy
Woo S, Kang D, Ha Y, Salmasi A, Kim J, Lee D, Kim W, Kim I. Comprehensive Analysis of Sexual Function Outcome in Prostate Cancer Patients After Robot-Assisted Radical Prostatectomy. Journal Of Endourology 2013, 28: 172-177. PMID: 23987521, DOI: 10.1089/end.2013.0304.Peer-Reviewed Original ResearchConceptsRobot-assisted radical prostatectomyPotency ratesNeurovascular bundleRadical prostatectomyPotency recoveryBilateral preservationYounger ageOverall potencyPhosphodiesterase type 5 inhibitorsBaseline erectile functionPreoperative potency statusSexual Health InventoryDatabase of patientsType 5 inhibitorsFunction 12 monthsProstate cancer patientsRecovery of potencySexual function outcomesPDE-5 inhibitorsOverall potency rateMultivariate regression analysisPotency statusPreoperative potencyErectile functionIndependent predictorsUse of a Hyaluronic Acid-Carboxymethylcellulose Adhesion Barrier on the Neurovascular Bundle and Prostatic Bed to Facilitate Earlier Recovery of Erectile Function After Robot-Assisted Prostatectomy: An Initial Experience
Joung J, Ha Y, Singer E, Ercolani M, Favaretto R, Lee D, Kim W, Lee K, Kim I. Use of a Hyaluronic Acid-Carboxymethylcellulose Adhesion Barrier on the Neurovascular Bundle and Prostatic Bed to Facilitate Earlier Recovery of Erectile Function After Robot-Assisted Prostatectomy: An Initial Experience. Journal Of Endourology 2013, 27: 1230-1235. PMID: 23879531, PMCID: PMC3787401, DOI: 10.1089/end.2013.0345.Peer-Reviewed Original ResearchConceptsRobot-assisted radical prostatectomyErectile functionNeurovascular bundleEF recoveryEarly recoveryPerioperative complicationsIndependent predictorsRadical prostatectomyGroup 2Group 1Initial experienceBilateral nerve-sparing techniqueNerve-sparing robot-assisted radical prostatectomyEF recovery ratesPreoperative IIEF-5Preoperative International IndexPreoperative sexual functionNerve-sparing techniqueRobot-Assisted ProstatectomyIIEF-5Consecutive patientsProstatic bedSurgical outcomesProstate removalSexual functionIncreased Incidence of Pathologically Nonorgan Confined Prostate Cancer in African-American Men Eligible for Active Surveillance
Ha Y, Salmasi A, Karellas M, Singer E, Kim J, Han M, Partin A, Kim W, Lee D, Kim I. Increased Incidence of Pathologically Nonorgan Confined Prostate Cancer in African-American Men Eligible for Active Surveillance. Urology 2013, 81: 831-836. PMID: 23465143, PMCID: PMC3978180, DOI: 10.1016/j.urology.2012.12.046.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBlack or African AmericanHumansIncidenceMaleMiddle AgedProstateProstatectomyProstatic NeoplasmsRetrospective StudiesRisk FactorsConceptsNational Comprehensive Cancer NetworkAA menRadical prostatectomyActive surveillanceProstate cancerNCCN criteriaBiopsy coresAS criteriaAS inclusion criteriaFinal surgical pathologyComprehensive Cancer NetworkPositive biopsy coresDatabase of menWorse clinicopathological featuresAfrican American menPathological upstagingAdvanced diseaseIndependent predictorsPathologic characteristicsClinicopathological featuresPreoperative PSAClinicopathologic findingsWA patientsInclusion criteriaPositive coresIncidence of Upgrading and Upstaging in Patients with Low-Volume Gleason Score 3+4 Prostate Cancers at Biopsy: Finding a New Group Eligible for Active Surveillance
Park H, Ha Y, Park S, Kim Y, Lee T, Kim J, Lee D, Kim W, Kim I. Incidence of Upgrading and Upstaging in Patients with Low-Volume Gleason Score 3+4 Prostate Cancers at Biopsy: Finding a New Group Eligible for Active Surveillance. Urologia Internationalis 2013, 90: 301-305. PMID: 23391718, DOI: 10.1159/000345292.Peer-Reviewed Original ResearchConceptsGleason score 3Prostate cancerRadical prostatectomyActive surveillanceScore 3Positive coresIncidence of upstagingPrediction of upgradingPSA cutoff levelPreoperative PSA levelUpstaging ratePSA levelsCancer involvementClinical stageNeedle biopsyUpstagingPatientsCutoff levelBiopsyMarginal associationIncidenceOverall rateCancerSurveillanceProstatectomy
2011
Pathologic implications of prostatic anterior fat pad
Jeong J, Choi E, Kang D, Ercolani M, Lee D, Kim W, Kim I. Pathologic implications of prostatic anterior fat pad. Urologic Oncology Seminars And Original Investigations 2011, 31: 63-67. PMID: 21396837, DOI: 10.1016/j.urolonc.2010.09.003.Peer-Reviewed Original ResearchConceptsProstatic anterior fat padRobot-assisted radical prostatectomyMetastatic prostate cancerLymph nodesProstate cancerAnterior fat padPSA levelsRadical prostatectomyLymphoid tissuePathologic analysisFat padPathologic implicationsSignificant pathologic differencesHigh-risk featuresPelvic lymph nodesRetrospective chart reviewLymph node statusProstate cancer patientsChart reviewConsecutive patientsPathologic stagingRoutine excisionNode statusBiochemical recurrenceCancer patientsImpact of robot‐assisted radical prostatectomy on health‐related quality of life in patients with lower urinary tract symptoms
Choi E, Jeong J, Kang D, Johnson K, Ercolani M, Jang T, Lee D, Kim W, Kim I. Impact of robot‐assisted radical prostatectomy on health‐related quality of life in patients with lower urinary tract symptoms. International Journal Of Urology 2011, 18: 297-303. PMID: 21342297, DOI: 10.1111/j.1442-2042.2011.02730.x.Peer-Reviewed Original ResearchMeSH KeywordsHumansLower Urinary Tract SymptomsMaleMiddle AgedProstatectomyProstatic NeoplasmsQuality of LifeRetrospective StudiesRobotic Surgical ProceduresConceptsLower urinary tract symptomsRobot-assisted radical prostatectomyPreoperative lower urinary tract symptomsUrinary tract symptomsHealth-related qualityAUA-SSTract symptomsRadical prostatectomyAmerican Urologic Association symptom scoreExpanded Prostate Cancer Index CompositePostoperative health-related qualityPreoperative Sexual Health InventoryProstate Cancer Index CompositeSexual Health InventorySignificant differencesLUTS severityUrinary botherUrinary domainStorage symptomsUrinary functionSevere groupSymptom scoresCommon complaintProstate cancerSignificant symptoms
2010
Impact of Posterior Urethral Plate Repair on Continence Following Robot-Assisted Laparoscopic Radical Prostatectomy
Kim I, Hwang E, Mmeje C, Ercolani M, Lee D. Impact of Posterior Urethral Plate Repair on Continence Following Robot-Assisted Laparoscopic Radical Prostatectomy. Yonsei Medical Journal 2010, 51: 427-431. PMID: 20376897, PMCID: PMC2852800, DOI: 10.3349/ymj.2010.51.3.427.Peer-Reviewed Original ResearchMeSH KeywordsAgedHumansLaparoscopyMaleMiddle AgedProstatectomyRetrospective StudiesUrethraUrinary IncontinenceConceptsRobot-assisted laparoscopic radical prostatectomyLaparoscopic radical prostatectomyContinence ratesRadical prostatectomyPad-free rateRecovery of continenceFoley catheter placementFoley catheter removalEPIC questionnaireVs. 71.4Catheter removalUrinary retentionPatient demographicsConsecutive patientsCatheter placementProstate cancerRetrospective analysisVs. 80Posterior aspectUrethral plateControl groupContinencePlate repairSignificant differencesPatients