2020
Predicting outcomes following second intent healing of periocular surgical defects
Kibbi N, Khan Y, Leffell DJ, Christensen SR, Suozzi KC. Predicting outcomes following second intent healing of periocular surgical defects. Archives Of Dermatological Research 2020, 313: 483-489. PMID: 32833078, DOI: 10.1007/s00403-020-02122-w.Peer-Reviewed Original ResearchConceptsMohs micrographic surgeryMedial canthusSingle academic surgical centerAcademic surgical centerConclusionsThis retrospective studyMedial canthal lesionAverage defect diameterMethodsRetrospective analysisTumor characteristicsPeriocular tumorsRetrospective studyPoor outcomePeriocular lesionsSurgical centersMicrographic surgeryWorse outcomesAnatomic locationAimThe purposeScar outcomeLarge lesionsUpper eyelidEyelid marginLid marginSurgical defectsLower eyelid
2019
Photodynamic therapy for cutaneous squamous cell carcinoma in situ: Impact of anatomic location, tumor diameter, and incubation time on effectiveness
Kibbi N, Zhang Y, Leffell DJ, Christensen SR. Photodynamic therapy for cutaneous squamous cell carcinoma in situ: Impact of anatomic location, tumor diameter, and incubation time on effectiveness. Journal Of The American Academy Of Dermatology 2019, 82: 1124-1130. PMID: 31712171, DOI: 10.1016/j.jaad.2019.10.079.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAminolevulinic AcidAnalysis of VarianceBiopsy, NeedleCarcinoma in SituCarcinoma, Squamous CellCohort StudiesDisease-Free SurvivalFemaleHumansImmunohistochemistryLogistic ModelsMaleMiddle AgedMultivariate AnalysisNeoplasm InvasivenessNeoplasm StagingPhotochemotherapyPrognosisRetrospective StudiesSkin NeoplasmsSurvival AnalysisTreatment OutcomeTumor BurdenConceptsCutaneous squamous cell carcinomaALA incubation timeSquamous cell carcinomaTumor diameterALA-PDTSubsequent recurrenceCell carcinomaAnatomic locationInitial complete response ratePhotodynamic therapyCases of SCCISMultivariate analysis factorsComplete response rateMedical record reviewEffectiveness of PDTPatient demographicsClinical responseMedian timeRetrospective reviewRecord reviewRetrospective studyTreatment detailsSingle institutionEffective treatmentResponse rate
2018
Hypertrophic Lichen Planus and Well-Differentiated Squamous Cell Carcinoma
Totonchy MB, Leventhal JS, Ko CJ, Leffell DJ. Hypertrophic Lichen Planus and Well-Differentiated Squamous Cell Carcinoma. Dermatologic Surgery 2018, 44: 1466-1470. PMID: 29360655, DOI: 10.1097/dss.0000000000001465.Peer-Reviewed Original Research
2017
Squamous proliferations on the legs of women: Qualitative examination of histopathology, TP53 sequencing, and implications for diagnosis in a series of 30 cases
Ko CJ, Glusac EJ, McNiff JM, Rodic N, Leffell DJ. Squamous proliferations on the legs of women: Qualitative examination of histopathology, TP53 sequencing, and implications for diagnosis in a series of 30 cases. Journal Of The American Academy Of Dermatology 2017, 77: 1126-1132.e1. PMID: 28709693, DOI: 10.1016/j.jaad.2017.04.1119.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overBase SequenceCarcinoma, Squamous CellFemaleGenes, p53HumansKeratoacanthomaLegSkin NeoplasmsConceptsSquamous cell carcinomaProminent cytologic atypiaMultiple squamous cell carcinomasCytologic atypiaSquamous proliferationTP53 mutationsDetectable TP53 mutationsLegs of womenFollicle-like structuresCell carcinomaHistopathologic findingsMultiple lesionsSCC lesionsHistopathologic analysisTP53 sequencingNumerous tumorsSmall seriesTP53 variantsClinical phenotypeKeratoacanthomaLesionsTumorsDifferent patientsAtypiaReactive phenomenonWell‐differentiated neuroendocrine tumors in skin: Terminology and diagnostic utility of cytokeratin 5/6 and p63
Panse G, Cowper SE, Leffell DJ, Pulitzer M, Ko CJ. Well‐differentiated neuroendocrine tumors in skin: Terminology and diagnostic utility of cytokeratin 5/6 and p63. Journal Of Cutaneous Pathology 2017, 44: 557-562. PMID: 28417484, DOI: 10.1111/cup.12952.Peer-Reviewed Original ResearchConceptsCutaneous adnexal neoplasmsAdnexal neoplasmsNeuroendocrine tumorsAdnexal tumorsBenign skin adnexal tumorCutaneous adnexal tumorsAggressive metastatic diseaseLow-grade tumorsSkin adnexal tumorsMajority of casesMetastatic diseaseMetastatic adenocarcinomaCarcinoid tumorsCytokeratin 5/6Diagnostic challengeDifferential diagnosisImmunohistochemical stainsCK5/6Diagnostic utilityPrimary siteTumorsNeoplasmsFirst signWDNETsP63
2016
Histopathologic features of multiple cutaneous squamous cell carcinomas of the lower extremity
Munday WR, Leffell DJ, McNiff JM, Ko CJ. Histopathologic features of multiple cutaneous squamous cell carcinomas of the lower extremity. Journal Of Cutaneous Pathology 2016, 43: 759-765. PMID: 27220356, DOI: 10.1111/cup.12738.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overCarcinoma, Squamous CellFemaleHumansLegMaleMiddle AgedNeoplasms, Multiple PrimarySkin NeoplasmsConceptsSquamous cell carcinomaMultiple squamous cell carcinomasCutaneous squamous cell carcinomaHistopathologic featuresCell carcinomaLower extremitiesMultiple cutaneous squamous cell carcinomasRetrospective chart reviewAmerican Joint CommitteeCancer staging criteriaDistinct clinical subtypesChart reviewPerineural invasionActinic keratosisStaging criteriaClinical subtypesMost lesionsStage IJoint CommitteeStage IIKeratoacanthomaPatientsCarcinomaTumorsSubtypes
2015
Randomized comparison of the safety of Flublok® versus licensed inactivated influenza vaccine in healthy, medically stable adults ≥50 years of age
Izikson R, Leffell DJ, Bock SA, Patriarca PA, Post P, Dunkle LM, Cox MM. Randomized comparison of the safety of Flublok® versus licensed inactivated influenza vaccine in healthy, medically stable adults ≥50 years of age. Vaccine 2015, 33: 6622-6628. PMID: 26529070, DOI: 10.1016/j.vaccine.2015.10.097.Peer-Reviewed Original ResearchConceptsYears of ageVaccine groupInfluenza vaccineHypersensitivity reactionsPossible hypersensitivityOverall adverse event profileUnsolicited adverse eventsInactivated influenza vaccineAdverse event profileSeasonal influenza vaccineIncidence of hypersensitivityAdverse event termsAdverse eventsRandomized comparisonEvent profileClinical criteriaClinical trialsStable adultsAfluriaCase recordsHealthy adultsTreatment assignmentHypersensitivityVaccineFlublokA Strategy for the Successful Management of Dermatofibrosarcoma Protuberans
Goldberg C, Hoang D, McRae M, Chung C, Leffell DJ, Narayan D. A Strategy for the Successful Management of Dermatofibrosarcoma Protuberans. Annals Of Plastic Surgery 2015, 74: 80-84. PMID: 23788146, DOI: 10.1097/sap.0b013e3182898692.Peer-Reviewed Original ResearchConceptsSurgical excisionPositive marginsDermatofibrosarcoma protuberansMohs surgeryNational Comprehensive Cancer Network guidelinesDisease recurrence/persistenceMargin sizeClear histological marginsComplications of reconstructionInitial surgical resectionRecurrence/persistenceTraditional surgical excisionSoft tissue sarcomasMethod of treatmentExcision patientsHistological marginsSurgery groupSubclinical involvementSurgical resectionMargin statusDistant metastasisNetwork guidelinesTissue sarcomasClinical variablesTumor resection
2013
Cutaneous squamous cell carcinomas of the lower extremity: A distinct subset of squamous cell carcinomas
Kim C, Ko CJ, Leffell DJ. Cutaneous squamous cell carcinomas of the lower extremity: A distinct subset of squamous cell carcinomas. Journal Of The American Academy Of Dermatology 2013, 70: 70-74. PMID: 24210370, DOI: 10.1016/j.jaad.2013.09.026.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overCarcinoma, Basal CellCarcinoma, Squamous CellFemaleHumansLower ExtremityMaleMiddle AgedSkin NeoplasmsConceptsCutaneous squamous cell carcinomaSquamous cell carcinomaLower extremitiesCell carcinomaClinical featuresIncidence of SCCPrevalence of SCCDistinct subsetsDistinctive clinical featuresNumber of patientsBasal cell carcinomaClinical outcomesSquamous cellsBiologic behaviorSame patientGeneral populationPatientsCarcinomaStudy periodAdditional studiesDefinitive conclusionsIncidenceExtremitiesOutcomesTreatment
2009
Adenosquamous carcinoma: a report of nine cases with p63 and cytokeratin 5/6 staining
Ko CJ, Leffell DJ, McNiff JM. Adenosquamous carcinoma: a report of nine cases with p63 and cytokeratin 5/6 staining. Journal Of Cutaneous Pathology 2009, 36: 448-452. PMID: 19278431, DOI: 10.1111/j.1600-0560.2008.01083.x.Peer-Reviewed Original ResearchConceptsCytokeratin 5/6Adenosquamous carcinomaPrimary cutaneous originSubset of casesCutaneous originMetastatic adenocarcinomaAppropriate therapyRare tumorGlandular differentiationCytokeratin 7Such tumorsDiffuse positivityLuminal areaTumorsCarcinomaAggressive behaviorP63StainClose associationAdenocarcinomaTherapyLesionsCasesPositivity
2002
Human Cadaveric Allograft for Repair of Nasal Defects After Extirpation of Basal Cell Carcinoma by Mohs Micrographic Surgery
Carucci JA, Kolenik SA, Leffell DJ. Human Cadaveric Allograft for Repair of Nasal Defects After Extirpation of Basal Cell Carcinoma by Mohs Micrographic Surgery. Dermatologic Surgery 2002, 28: 340-343. PMID: 11966793, DOI: 10.1046/j.1524-4725.2002.01143.x.Peer-Reviewed Original ResearchConceptsHuman cadaveric allograftMohs micrographic surgeryBasal cell carcinomaCadaveric allograftsCell carcinomaMicrographic surgeryHealing timeSkin cancerInfiltrative basal cell carcinomaNasal defectsAverage healing timeWound infectionHypergranulation tissueCancer histologyImmediate reconstructionMedical statusPatientsExtensive proceduresUseful alternativeAllograftsSurgeryCarcinomaCosmesisCancerDefect size
1999
Status of residual tumor in patients with squamous cell carcinoma referred for Mohs micrographic surgery.
McGovern T, Grossman D, Fitzgerald D, Glusac E, Leffell D. Status of residual tumor in patients with squamous cell carcinoma referred for Mohs micrographic surgery. JAMA Dermatology 1999, 135: 1557-9. PMID: 10606080, DOI: 10.1001/archderm.135.12.1557.Peer-Reviewed Original ResearchUse of a Lyophilized Bovine Collagen Matrix in Postoperative Wound Healing
Kolenik S, McGovern T, Leffell D. Use of a Lyophilized Bovine Collagen Matrix in Postoperative Wound Healing. Dermatologic Surgery 1999, 25: 303-307. PMID: 10417587, DOI: 10.1046/j.1524-4725.1999.08230.x.Peer-Reviewed Original ResearchConceptsMohs micrographic surgeryBovine collagen matrixMicrographic surgeryWound careControl groupWound healingMinority of patientsPostoperative wound healingSecond intention healingCollagen matrixManagement of defectsWound infectionDressing changesAdverse reactionsImmediate reconstructionAllergic reactionsComplete healingAnatomic sitesRapid wound healingSurgical defectsStudy woundsLarger studySecond intentionBiological dressingSurgery
1996
Relationship Between Sunlight Exposure and a Key Genetic Alteration in Basal Cell Carcinoma
Gailani M, Leffell D, Ziegler A, Gross E, Brash D, Bale A. Relationship Between Sunlight Exposure and a Key Genetic Alteration in Basal Cell Carcinoma. Journal Of The National Cancer Institute 1996, 88: 349-354. PMID: 8609643, DOI: 10.1093/jnci/88.6.349.Peer-Reviewed Original ResearchConceptsBasal cell carcinomaLoss of heterozygosityCell carcinomaP53 geneSunlight exposureExact testGenetic alterationsPathogenesis of BCCSun-exposed areasFrequency of LOHMohs micrographic surgical techniqueEnvironmental agentsLocation of tumorFisher's exact testSkin cancer patientsKey genetic alterationsUVB radiationChi-squared analysisFrequent genetic alterationsLimited associationSpecific environmental agentsBCC incidenceTumor characteristicsCancer patientsCommon cancer
1995
The Use of Cryopreserved Human Skin Allografts in Wound Healing following Mohs Surgery
KOLENIK S, LEFFELL D. The Use of Cryopreserved Human Skin Allografts in Wound Healing following Mohs Surgery. Dermatologic Surgery 1995, 21: 615-620. PMID: 7606373, DOI: 10.1111/j.1524-4725.1995.tb00517.x.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overCarcinoma, Basal CellCarcinoma, Squamous CellCryopreservationDermatologic Surgical ProceduresFemaleFollow-Up StudiesGraft RejectionGraft SurvivalGranulation TissueHumansMaleMiddle AgedMohs SurgerySkinSkin CareSkin NeoplasmsSkin TransplantationSurgical Wound InfectionTransplantation, HomologousTreatment OutcomeWound HealingConceptsHuman skin allograftsWound careSkin allograftsImmediate reconstructionMohs surgeryFull-thickness skin graftingMinority of patientsEvidence of infectionExcision of tumorSkin cancer patientsFull‐thickness cutaneous defectGranulation tissue productionFull-thickness skinCancer patientsSkin graftingReconstructive proceduresWound coverageSafe alternativeBiological dressingCutaneous defectsPatientsRapid healingWound healingHealingCare
1993
Mutation hotspots due to sunlight in the p53 gene of nonmelanoma skin cancers.
Ziegler A, Leffell DJ, Kunala S, Sharma HW, Gailani M, Simon JA, Halperin AJ, Baden HP, Shapiro PE, Bale AE. Mutation hotspots due to sunlight in the p53 gene of nonmelanoma skin cancers. Proceedings Of The National Academy Of Sciences Of The United States Of America 1993, 90: 4216-4220. PMID: 8483937, PMCID: PMC46477, DOI: 10.1073/pnas.90.9.4216.Peer-Reviewed Original ResearchConceptsBasal cell carcinomaCell carcinomaSkin cancerPercent of tumorsSquamous cell carcinomaNonmelanoma skin cancerP53 tumor suppressor geneDipyrimidine sitesBCC developmentMutation hotspotsCancerTumor suppressor geneP53 genePoint mutationsAllelic lossCarcinomaTwo-thirdsSuppressor geneGenetic eventsSkinP53Such mutationsMutationsCarcinogenic mutationsTumors