2024
Survival Among Patients With High-Risk Gastrointestinal Cancers During the COVID-19 Pandemic
Janczewski L, Browner A, Cotler J, Palis B, Chan K, Joung R, Bentrem D, Merkow R, Boffa D, Nelson H. Survival Among Patients With High-Risk Gastrointestinal Cancers During the COVID-19 Pandemic. JAMA Network Open 2024, 7: e240160. PMID: 38441896, PMCID: PMC10915687, DOI: 10.1001/jamanetworkopen.2024.0160.Peer-Reviewed Original ResearchConceptsStage IV diseaseRetrospective cohort studyCohort studyQuality care deliveryIV diseaseOperative mortalityHigh riskPandemic-related stressorsAssociated with increased 1-year mortalityDiagnosis of stage IMultivariate logistic regressionCOVID-19 pandemicCare deliveryNational Cancer DatabaseKaplan-Meier curvesEvaluate 30-dayMain OutcomesFollow-up dataCancer communityPrepandemic levelsLogistic regressionCancer DatabaseCOVID-19COVID-19 infectionMalignant neoplasms
2023
Alterations in Cancer Treatment During the First Year of the COVID-19 Pandemic in the US
Janczewski L, Cotler J, Merkow R, Palis B, Nelson H, Mullett T, Boffa D. Alterations in Cancer Treatment During the First Year of the COVID-19 Pandemic in the US. JAMA Network Open 2023, 6: e2340148. PMID: 37902756, PMCID: PMC10616721, DOI: 10.1001/jamanetworkopen.2023.40148.Peer-Reviewed Original ResearchConceptsNational Cancer DatabaseCancer treatmentAcademic hospitalCommunity hospitalMAIN OUTCOMECOVID-19 pandemicProportion of patientsRetrospective cohort studyAvailability of treatmentFirst yearUnderwent surgeryCohort studyMedian ageCancer surgeryMedian timeTreatment of cancerCancer careTreatment modalitiesCancer screeningCancer DatabaseMedian travel distancePatientsHospitalSurgeryCancerAssociation of Wildfire Exposure While Recovering From Lung Cancer Surgery With Overall Survival
Zhang D, Xi Y, Boffa D, Liu Y, Nogueira L. Association of Wildfire Exposure While Recovering From Lung Cancer Surgery With Overall Survival. JAMA Oncology 2023, 9: 1214-1220. PMID: 37498574, PMCID: PMC10375383, DOI: 10.1001/jamaoncol.2023.2144.Peer-Reviewed Original ResearchConceptsNon-small cell lung cancerOverall survivalWorse overall survivalLung cancerNSCLC surgeryCohort studyHazard ratioSurgical resectionNSCLC resectionLong-term overall survivalNational Cancer DatabaseLung cancer surgeryLymph node involvementCell lung cancerHealth insurance typeHealth hazardsHospital dischargeNode involvementCancer surgeryStudy endTumor sizeCancer DatabaseInsurance typeHigh riskUnexposed individualsAssessment of a collaborative treatment model for trimodal management of esophageal cancer
Udelsman B, Ermer T, Ely S, Canavan M, Zhan P, Boffa D, Blasberg J. Assessment of a collaborative treatment model for trimodal management of esophageal cancer. Journal Of Thoracic Disease 2023, 15: 4668-4680. PMID: 37868899, PMCID: PMC10586936, DOI: 10.21037/jtd-23-346.Peer-Reviewed Original ResearchPathologic complete responseNational Cancer DatabaseGy of radiationEsophageal cancerCollaborative treatmentCollaborative treatment modelMultiagent chemotherapySingle institutionRate of pCRPatient travel burdenR0 resection rateTreatment modelTrimodality therapyTrimodality treatmentNeoadjuvant chemoradiotherapyNeoadjuvant therapyR0 resectionResection rateComplete responseMultivariable analysisTumor characteristicsCancer DatabaseMedian travel distancePatientsCollaborative CohortOverall survival in low-comorbidity patients with stage I non–small cell lung cancer who chose stereotactic body radiotherapy compared to surgery
Udelsman B, Canavan M, Zhan P, Ely S, Park H, Boffa D, Mase V. Overall survival in low-comorbidity patients with stage I non–small cell lung cancer who chose stereotactic body radiotherapy compared to surgery. Journal Of Thoracic And Cardiovascular Surgery 2023, 167: 822-833.e7. PMID: 37500052, DOI: 10.1016/j.jtcvs.2023.07.021.Peer-Reviewed Original ResearchNon-small cell lung cancerStereotactic body radiotherapyStage I non-small cell lung cancerLow-comorbidity patientsCell lung cancerOverall survivalSurgical managementLung cancerSurgical resectionBody radiotherapyClinical stage I non-small cell lung cancerEarly-stage non-small cell lung cancerPropensity score-matched cohortPropensity score-matched patientsPropensity score-matched analysisEarly-stage lung cancerLong-term OSNational Cancer DatabaseProportion of patientsCancer DatabasePatientsSBRT patientsSurgeryCancerMortalityEffect of pandemic-related reductions in cancer care delivery on different US health systems.
Janczewski L, Cotler J, Merkow R, Palis B, Nelson H, Mullett T, Boffa D. Effect of pandemic-related reductions in cancer care delivery on different US health systems. Journal Of Clinical Oncology 2023, 41: e18811-e18811. DOI: 10.1200/jco.2023.41.16_suppl.e18811.Peer-Reviewed Original ResearchNational Cancer DatabaseHospital typeAcademic hospitalUS healthcare systemTreatment modalitiesCommunity hospitalTreatment utilizationCancer treatmentCOVID-19 pandemicCancer care deliveryTypes of malignanciesHealthcare systemDifferent hospital typesEvaluation of cancerChi-squared testUS health systemFirst yearUnderwent surgerySurgical patientsCancer careCancer DatabaseSurgical carePatientsTreatment declineDescriptive univariate statisticsASO Visual Abstract: Evaluation of the Impact of the COVID-19 Pandemic on Reliability of Cancer Surveillance Data in the National Cancer Database
Nogueira L, Palis B, Boffa D, Lum S, Yabroff K, Nelson H. ASO Visual Abstract: Evaluation of the Impact of the COVID-19 Pandemic on Reliability of Cancer Surveillance Data in the National Cancer Database. Annals Of Surgical Oncology 2023, 30: 2094-2094. PMCID: PMC9869810, DOI: 10.1245/s10434-022-13022-w.Peer-Reviewed Original Research
2022
Utilization and Outcomes of Radiation in Stage IV Esophageal Cancer
Zhan P, Canavan M, Ermer T, Pichert M, Li A, Maduka R, Kaminski M, Johung K, Boffa D. Utilization and Outcomes of Radiation in Stage IV Esophageal Cancer. JTO Clinical And Research Reports 2022, 3: 100429. PMID: 36483656, PMCID: PMC9722471, DOI: 10.1016/j.jtocrr.2022.100429.Peer-Reviewed Original ResearchStage IV esophageal cancerNational Cancer DatabaseEsophageal cancerCancer DatabaseRadiation doseSurvival advantageMedian total radiation dosePropensity score-matched pairsOutcome of radiationRetrospective cohort studyKaplan-Meier analysisTotal radiation doseAppropriate radiation dosePalliative regimensCohort studyMedian ageRadiation administrationSurvival associationsBetter survivalPatientsLocal controlCancerDosePalliationFurther studiesNonregional Lymph Nodes as the Only Metastatic Site in Stage IV Esophageal Cancer
Zhan P, Canavan M, Ermer T, Pichert M, Li A, Maduka R, Kaminski M, Boffa D. Nonregional Lymph Nodes as the Only Metastatic Site in Stage IV Esophageal Cancer. JTO Clinical And Research Reports 2022, 3: 100426. PMID: 36444359, PMCID: PMC9700291, DOI: 10.1016/j.jtocrr.2022.100426.Peer-Reviewed Original ResearchStage IV esophageal cancerNonregional lymph nodesEsophageal cancerSystemic metastasesLymph nodesMultiorgan metastasesOrgan metastasisSuperior survivalAcademic facility typesOnly metastatic siteNational Cancer DatabaseOutcomes of patientsPatients 18 yearsRetrospective cohort studyStage IV diseaseKaplan-Meier analysisSquamous cell carcinomaPropensity-matched sampleNonregional lymphCohort studyMetastatic involvementMetastatic sitesCell carcinomaCancer DatabaseCox modelEvaluating information loss in the National Cancer Database from cases lost to follow‐up
Cotler JH, Nogueira L, McCabe R, Nelson H, Brajcich BC, Boffa DJ, Lum SS, Harris JB, Hawhee V, Mullett TW, Bilimoria KY, Palis BE. Evaluating information loss in the National Cancer Database from cases lost to follow‐up. Journal Of Surgical Oncology 2022, 126: 1123-1132. PMID: 36029288, DOI: 10.1002/jso.26977.Peer-Reviewed Original ResearchConceptsNational Cancer DatabaseCancer casesPediatric casesAdult casesCancer DatabaseRectal cancer casesLung cancer casesMean survival timeBreast cancer casesHazard ratioCancer RegistryYears postdiagnosisSurvival outcomesLymphoma casesSurvival timeLeukemia casesSurvival analysisResource burdenFollowTotalMinimal differencesYearsAnnual increasePostdiagnosisPatientsRevisiting Indications for Brain Imaging During the Clinical Staging Evaluation of Lung Cancer
Pichert MD, Canavan ME, Maduka RC, Li AX, Ermer T, Zhan PL, Kaminski M, Udelsman BV, Blasberg JD, Mase VJ, Dhanasopon AP, Boffa DJ. Revisiting Indications for Brain Imaging During the Clinical Staging Evaluation of Lung Cancer. JTO Clinical And Research Reports 2022, 3: 100318. PMID: 35540711, PMCID: PMC9079298, DOI: 10.1016/j.jtocrr.2022.100318.Peer-Reviewed Original ResearchPrevalence of brainBrain metastasesSummary stageBrain imagingN classificationIsolated brain metastasesNode-negative NSCLCRoutine brain imagingStage II NSCLCStage IV NSCLCClinical stage INational Cancer DatabaseEarly-stage NSCLCStage IAStage IIIAStage NSCLCStaging evaluationClinical stageLung cancerCancer DatabaseN stageNSCLCPatientsStage IMetastasisAppendiceal Cancer in the National Cancer Database: Increasing Frequency, Decreasing Age, and Shifting Histology.
Salazar MC, Canavan ME, Chilakamarry S, Boffa DJ, Schuster KM. Appendiceal Cancer in the National Cancer Database: Increasing Frequency, Decreasing Age, and Shifting Histology. Journal Of The American College Of Surgeons 2022, 234: 1082-1089. PMID: 35703801, DOI: 10.1097/xcs.0000000000000172.Peer-Reviewed Original ResearchConceptsRight-sided colon cancerNational Cancer DatabaseAppendiceal cancerColon cancerAcute appendicitisNonoperative managementCancer DatabasePatients 49 yearsPatients 18 yearsArea of residenceLogistic regression modelsAppendiceal histologyPatients 40Appendectomy specimensPatient ageCarcinoid tumorsAppendiceal carcinoidsCancer incidenceCancer histologySmall studyAge groupsCancerCarcinoidsLogistic regressionHistologyNonadherence to Multimodality Cancer Treatment Guidelines in the United States
Tchelebi LT, Shen B, Wang M, Potters L, Herman J, Boffa D, Segel JE, Park HS, Zaorsky NG. Nonadherence to Multimodality Cancer Treatment Guidelines in the United States. Advances In Radiation Oncology 2022, 7: 100938. PMID: 35469182, PMCID: PMC9034283, DOI: 10.1016/j.adro.2022.100938.Peer-Reviewed Original ResearchGuideline-concordant treatmentAnal cancerMultimodality treatmentRectal cancerCervical cancerLung cancerAdvanced non-small cell lung cancerNasopharynx cancerNon-small cell lung cancerNonmetastatic anal cancerNational Cancer DatabasePercent of patientsAdvanced cervical cancerCancer treatment guidelinesCell lung cancerMultivariable logistic regressionPrimary tumor siteLow-volume facilitiesTreatment guidelinesComorbid conditionsCancer DatabaseOdds ratioNational guidelinesPatientsConfounding variablesAccess to High-Volume Hospitals for High-Risk Cancer Surgery for Racial and Ethnic Minoritized Groups
Salazar MC, Canavan ME, Holaday LW, Billingsley KG, Ross J, Boffa DJ, Gross CP. Access to High-Volume Hospitals for High-Risk Cancer Surgery for Racial and Ethnic Minoritized Groups. JNCI Cancer Spectrum 2022, 6: pkac024. PMID: 35603855, PMCID: PMC8997114, DOI: 10.1093/jncics/pkac024.Peer-Reviewed Original ResearchConceptsHigh-risk cancer surgeryHigh-volume hospitalsCancer surgeryHispanic patientsNational Cancer DatabaseNon-Hispanic patientsNon-black patientsLung resectionBlack patientsCancer DatabaseBetter outcomesPatientsSurgeryHospitalPancreatectomyLow probabilityInequitable accessEsophagectomyProctectomyResection
2021
Twenty-Five Years of Cancer Follow-Up; Is the Data Worth the Effort?
Brajcich BC, Palis BE, McCabe R, Nogueira L, Boffa DJ, Lum SS, Harris JB, Hawhee V, Mullett TW, Bilimoria KY, Nelson H. Twenty-Five Years of Cancer Follow-Up; Is the Data Worth the Effort? Annals Of Surgical Oncology 2021, 29: 828-836. PMID: 34689251, DOI: 10.1245/s10434-021-10668-w.Peer-Reviewed Original ResearchTrends in Patient Volume by Hospital Type and the Association of These Trends With Time to Cancer Treatment Initiation
Frosch ZAK, Illenberger N, Mitra N, Boffa DJ, Facktor MA, Nelson H, Palis BE, Bekelman JE, Shulman LN, Takvorian SU. Trends in Patient Volume by Hospital Type and the Association of These Trends With Time to Cancer Treatment Initiation. JAMA Network Open 2021, 4: e2115675. PMID: 34241630, PMCID: PMC8271360, DOI: 10.1001/jamanetworkopen.2021.15675.Peer-Reviewed Original ResearchConceptsTreatment initiationCross-sectional studyCommunity hospitalHospital typeAcademic centersPatient volumeNCI centersMAIN OUTCOMETimely treatmentMean annual rateCancer treatmentCancer treatment initiationCancer-accredited hospitalsCommon incident cancerFirst cancer treatmentNational Cancer DatabaseTime interaction termNational Cancer InstituteMean annual changeAdult patientsIncident cancerReferral centerTreatment delayCancer careCancer DatabaseChange in facility-level share of Medicaid patients with cancer following implementation of the affordable care act.
Buck M, Demkowicz P, Nie J, Marks V, Salazar M, Kenney P, Boffa D, Leapman M. Change in facility-level share of Medicaid patients with cancer following implementation of the affordable care act. Journal Of Clinical Oncology 2021, 39: e18543-e18543. DOI: 10.1200/jco.2021.39.15_suppl.e18543.Peer-Reviewed Original ResearchProportion of MedicaidAffordable Care ActMedicaid patientsMedicaid expansionFacility-level changesFacility-level policiesNational Cancer DatabasePrimary study endpointProportion of patientsInsurance coverageMultivariable logistic regressionExpansion statesCare ActFacility-level factorsMedicaid expansion statesNon-expansion statesAdult patientsStudy endpointAdjusted differenceCancer DatabaseMedicaid populationEligible facilitiesPatientsCancerLogistic regressionAdjuvant Chemotherapy for T4 Non-Small Cell Lung Cancer with Additional Ipsilateral Lung Nodules
Li AX, Flores K, Canavan ME, Boffa DJ, Blasberg JD. Adjuvant Chemotherapy for T4 Non-Small Cell Lung Cancer with Additional Ipsilateral Lung Nodules. The Annals Of Thoracic Surgery 2021, 113: 421-428. PMID: 33684345, DOI: 10.1016/j.athoracsur.2021.02.042.Peer-Reviewed Original ResearchConceptsNon-small cell lung cancerDifferent ipsilateral lobeCell lung cancerAdditional tumor nodulesT4 non-small cell lung cancerAdjuvant chemotherapyIpsilateral lobeT4 diseaseTumor nodulesLung cancerT4 tumorsOverall survivalSurgical resectionIIIA non-small cell lung cancerAdjuvant multiagent chemotherapyResectable stage IINational Cancer DatabaseFurther prospective studiesLymph node metastasisMultiagent chemotherapyNode metastasisPrimary outcomeProspective studyPatient populationCancer DatabaseChemoradiation as a nonsurgical treatment option for early-stage esophageal cancers: a retrospective cohort study
Pathak R, Canavan ME, Walters S, Salazar MC, Boffa DJ. Chemoradiation as a nonsurgical treatment option for early-stage esophageal cancers: a retrospective cohort study. Journal Of Thoracic Disease 2021, 13: 140-148. PMID: 33569194, PMCID: PMC7867841, DOI: 10.21037/jtd-20-1187.Peer-Reviewed Original ResearchEarly-stage esophageal cancerEsophageal cancerOverall survivalDefinitive non-surgical treatmentComorbidity-free patientsCT1/T2National Cancer DatabaseRetrospective cohort studyNon-surgical treatmentSubset of patientsGoals of careKaplan-Meier curvesNonsurgical treatment optionsKaplan-Meier estimatesInoperable patientsCohort studyNonsurgical approachCure rateTreatment optionsCancer patientsEndoscopic excisionCancer DatabaseTumor removalChemoradiationPatients
2020
Association of hospital type and patient volume growth with timely cancer treatment.
Frosch Z, Illenberger N, Mitra N, Boffa D, Facktor M, Nelson H, Bekelman J, Shulman L, Takvorian S. Association of hospital type and patient volume growth with timely cancer treatment. Journal Of Clinical Oncology 2020, 38: 2022-2022. DOI: 10.1200/jco.2020.38.15_suppl.2022.Peer-Reviewed Original ResearchNational Cancer InstituteHospital typeAcademic hospitalPatient volumeCancer treatmentNational Cancer DatabaseRegional referral centerTime interactionComplex cancer careTimely cancer treatmentReferral centerPrimary outcomeInitial treatmentCancer careCancer DatabasePatient outcomesCommunity hospitalTimely treatmentNew diagnosisCancer InstituteLinear mixed effects modelsHospitalPatientsSuperior outcomesStudy period