2022
Implementing a simulation-based curriculum for hybrid intracavitary/interstitial brachytherapy using a new, commercially available, US/MR/CT-compatible gynecologic phantom
Li J, Tien C, Kassick M, Peters G, Damast S. Implementing a simulation-based curriculum for hybrid intracavitary/interstitial brachytherapy using a new, commercially available, US/MR/CT-compatible gynecologic phantom. Brachytherapy 2022, 22: 157-165. PMID: 36528476, DOI: 10.1016/j.brachy.2022.11.006.Peer-Reviewed Original ResearchRadiation therapy in the definitive management of medically inoperable endometrial cancer
Chin C, Damast S. Radiation therapy in the definitive management of medically inoperable endometrial cancer. International Journal Of Gynecological Cancer 2022, 32: 323-331. PMID: 35256419, DOI: 10.1136/ijgc-2021-002532.Peer-Reviewed Original ResearchConceptsMultiparametric magnetic resonance imagingInoperable patientsEndometrial cancerImage-guided brachytherapyRadiation therapySystemic anti-tumor immune responseAnti-tumor immune responseThree-dimensional image-guided brachytherapyInoperable endometrial cancerDefinitive radiation therapyPoor surgical candidatesNovel systemic agentsRecent consensus guidelinesHigh-volume centersExtent of tumorRates of obesityMagnetic resonance imagingMedical inoperabilityLate morbiditySurgical candidatesSystemic agentsClinical stagingDefinitive managementOngoing trialsUterine sizeDosimetric study of Varian Universal Multi-Channel Cylinder System for High-Dose-Rate 192Ir Brachytherapy
Tien CJ, Damast S, Chen ZJ. Dosimetric study of Varian Universal Multi-Channel Cylinder System for High-Dose-Rate 192Ir Brachytherapy. Brachytherapy 2022, 21: 244-254. PMID: 34996715, DOI: 10.1016/j.brachy.2021.11.001.Peer-Reviewed Original Research
2018
Extended duration of dilator use beyond 1 year may reduce vaginal stenosis after intravaginal high-dose-rate brachytherapy
Stahl JM, Qian JM, Tien CJ, Carlson DJ, Chen Z, Ratner ES, Park HS, Damast S. Extended duration of dilator use beyond 1 year may reduce vaginal stenosis after intravaginal high-dose-rate brachytherapy. Supportive Care In Cancer 2018, 27: 1425-1433. PMID: 30187220, DOI: 10.1007/s00520-018-4441-5.Peer-Reviewed Original ResearchConceptsVaginal stenosisEndometrial carcinomaMultivariable Cox proportional hazardsMultivariable Cox regression analysisVD useAcademic tertiary referral centerTertiary referral centerCox regression analysisLog-rank testCox proportional hazardsDevelopment of gradeDilator usePelvic radiotherapyReferral centerNoncompliant patientsPrimary outcomeAdjuvant brachytherapyEC patientsConclusionsThe riskRate brachytherapyProportional hazardsOptimal durationPatientsBrachytherapyStudy period
2015
Predictors of vaginal stenosis after intravaginal high-dose-rate brachytherapy for endometrial carcinoma
Park HS, Ratner ES, Lucarelli L, Polizzi S, Higgins SA, Damast S. Predictors of vaginal stenosis after intravaginal high-dose-rate brachytherapy for endometrial carcinoma. Brachytherapy 2015, 14: 464-470. PMID: 25887343, DOI: 10.1016/j.brachy.2015.03.001.Peer-Reviewed Original ResearchConceptsVaginal stenosisDilator useIndependent predictorsEndometrial carcinomaTotal doseRate brachytherapyMultivariable logistic regression analysisExternal beam radiation therapyCommon Terminology CriteriaEffective adjuvant treatmentMonths of followupPost-treatment factorsBeam radiation therapyHigher total doseLogistic regression analysisTerminology CriteriaAdjuvant treatmentFollowup visitMean followupAdverse eventsLast followupMultivariable analysisRisk factorsRadiation therapyPatients
2012
Sexual Functioning Among Endometrial Cancer Patients Treated With Adjuvant High-Dose-Rate Intra-Vaginal Radiation Therapy
Damast S, Alektiar KM, Goldfarb S, Eaton A, Patil S, Mosenkis J, Bennett A, Atkinson T, Jewell E, Leitao M, Barakat R, Carter J, Basch E. Sexual Functioning Among Endometrial Cancer Patients Treated With Adjuvant High-Dose-Rate Intra-Vaginal Radiation Therapy. International Journal Of Radiation Oncology • Biology • Physics 2012, 84: e187-e193. PMID: 22572074, PMCID: PMC5538259, DOI: 10.1016/j.ijrobp.2012.03.030.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, IntravaginalAdolescentAdultAgedAged, 80 and overBrachytherapyCross-Sectional StudiesDehydrationDilatationEndometrial NeoplasmsFemaleHumansHysterectomyLaparotomyLibidoMiddle AgedOrgasmPainPersonal SatisfactionRadiotherapy DosageRadiotherapy, AdjuvantReference ValuesRegression AnalysisRisk FactorsSexual Dysfunction, PhysiologicalSurveys and QuestionnairesVaginal Creams, Foams, and JelliesVaginal DiseasesYoung AdultConceptsFemale Sexual Function IndexEndometrial cancer patientsSexual dysfunctionFSFI scoreSexual functioningCancer patientsEarly stage endometrial cancer patientsQuestionnaire completionRates of SDLubricant useLower FSFI scoresSexual Function IndexPoor sexual functioningRadiation oncology clinicPostmenopausal statusSimple hysterectomyPostmenopausal populationOncology clinicAdjuvant brachytherapyEC patientsRisk factorsFunction IndexRadiation therapyHigh doseMultivariate analysis
2010
Impact of Dose on Local Failure Rates After Image-Guided Reirradiation of Recurrent Paraspinal Metastases
Damast S, Wright J, Bilsky M, Hsu M, Zhang Z, Lovelock M, Cox B, Zatcky J, Yamada Y. Impact of Dose on Local Failure Rates After Image-Guided Reirradiation of Recurrent Paraspinal Metastases. International Journal Of Radiation Oncology • Biology • Physics 2010, 81: 819-826. PMID: 20888133, DOI: 10.1016/j.ijrobp.2010.06.013.Peer-Reviewed Original ResearchConceptsImage-guided intensity-modulated radiotherapyLocal failure rateParaspinal metastasisImpact of doseDaily fractionsIncidence of myelopathySingle-fraction regimensRecords of patientsRisk of myelopathyIntensity-modulated radiotherapyCumulative incidenceEpidural diseaseField recurrenceDose groupProspective dataFailure rateTreatment characteristicsLF incidenceMetastasisIncidenceSignificant decreaseGyMyelopathyDoseIg
2006
Do metallic ports in tissue expanders affect postmastectomy radiation delivery?
Damast S, Beal K, Ballangrud Å, Losasso TJ, Cordeiro PG, Disa JJ, Hong L, McCormick BL. Do metallic ports in tissue expanders affect postmastectomy radiation delivery? International Journal Of Radiation Oncology • Biology • Physics 2006, 66: 305-310. PMID: 16904530, DOI: 10.1016/j.ijrobp.2006.05.017.Peer-Reviewed Original ResearchConceptsPostmastectomy radiation therapyTissue expanderTangent beamsPermanent implant exchangeDosimetric effectsChest wall treatmentMetallic portPermanent breast implantPotential dosimetric effectsMedian doseImplant exchangeEx vivo resultsThermoluminescent dosimetersRadiation therapyPatientsVolume of tissueBreast implantsRadiation deliveryPermanent implantsExit doseVivo resultsDoseMV photonsTreatmentImplants