2024
Pitfalls of PRAME Immunohistochemistry in a Large Series of Melanocytic and Nonmelanocytic Lesions With Literature Review
Turner N, Ko C, McNiff J, Galan A. Pitfalls of PRAME Immunohistochemistry in a Large Series of Melanocytic and Nonmelanocytic Lesions With Literature Review. American Journal Of Dermatopathology 2024, 46: 21-30. PMID: 37982498, DOI: 10.1097/dad.0000000000002584.Peer-Reviewed Original ResearchConceptsConventional malignant melanomaMalignant melanomaPRAME immunohistochemistryBorderline lesionsNonmelanocytic lesionsDysplastic neviAmerican Joint CommitteePathological tumor stageMalignant melanocytic proliferationsBanal melanocytic nevusUlceration statusInstitution experienceBreslow depthMean ageTumor stageClinicopathologic correlationConsecutive casesMale genderAtypical fibroxanthomaSevere atypiaJoint CommitteeLarge seriesAmbiguous melanocytic lesionsMelanocytic proliferationMalignant counterparts
2023
PRAME immunohistochemistry can distinguish melanocytic pseudonests of lichenoid reactions from melanoma in situ
Roy S, Panse G, McNiff J. PRAME immunohistochemistry can distinguish melanocytic pseudonests of lichenoid reactions from melanoma in situ. Journal Of Cutaneous Pathology 2023, 50: 450-454. PMID: 36789669, DOI: 10.1111/cup.14407.Peer-Reviewed Original Research
2022
Not all well-differentiated cutaneous squamous cell carcinomas are equal: Tumors with disparate biologic behavior have differences in protein expression via digital spatial profiling
Vesely M, Martinez-Morilla S, Gehlhausen JR, McNiff JM, Whang PG, Rimm D, Ko CJ. Not all well-differentiated cutaneous squamous cell carcinomas are equal: Tumors with disparate biologic behavior have differences in protein expression via digital spatial profiling. Journal Of The American Academy Of Dermatology 2022, 87: 695-698. PMID: 35398219, DOI: 10.1016/j.jaad.2022.03.057.Peer-Reviewed Original Research
2021
Lichenoid dermatoses with pseudomelanocytic nests vs inflamed melanoma in situ: A comparative study
Panse G, McNiff JM. Lichenoid dermatoses with pseudomelanocytic nests vs inflamed melanoma in situ: A comparative study. Journal Of Cutaneous Pathology 2021, 48: 745-749. PMID: 33350494, DOI: 10.1111/cup.13945.Peer-Reviewed Original ResearchConceptsPseudomelanocytic nestsLichenoid dermatosesDermoepidermal junctionHistopathological featuresPagetoid scatterCytologic atypiaDifferent histopathological featuresSun-damaged skinSignificant cytologic atypiaLichenoid inflammationSolitary melanocytesLichenoid keratosisClinicopathological correlationBiopsy specimensNon-melanocytic lesionsDiagnostic pitfallsAtypical melanocytesDermatosesSingle melanocytesAtypiaMelanomaMelanocytesConfluent growthBenign process
2020
Discordant anti‐SARS‐CoV‐2 spike protein and RNA staining in cutaneous perniotic lesions suggests endothelial deposition of cleaved spike protein
Ko CJ, Harigopal M, Gehlhausen JR, Bosenberg M, McNiff JM, Damsky W. Discordant anti‐SARS‐CoV‐2 spike protein and RNA staining in cutaneous perniotic lesions suggests endothelial deposition of cleaved spike protein. Journal Of Cutaneous Pathology 2020, 48: 47-52. PMID: 32895985, DOI: 10.1111/cup.13866.Peer-Reviewed Original ResearchConceptsSARS-CoV-2 spike proteinCOVID toesEccrine epitheliumEndothelial cellsSkin biopsiesSpike proteinReverse transcriptase polymerase chain reaction testingSARS-CoV-2 antibodiesPolymerase chain reaction testingSARS-CoV-2 RNAPotential pathogenetic mechanismsPositive immunohistochemical labelingSARS-CoV-2Endothelial depositionPathogenetic mechanismsImmunohistochemical stainingReaction testingImmunohistochemical labelingEccrine glandsRNA ISHImmunohistochemistrySpike RNAGold standardTissue sectionsBiopsyPerniosis during the COVID‐19 pandemic: Negative anti‐SARS‐CoV‐2 immunohistochemistry in six patients and comparison to perniosis before the emergence of SARS‐CoV‐2
Ko CJ, Harigopal M, Damsky W, Gehlhausen JR, Bosenberg M, Patrignelli R, McNiff JM. Perniosis during the COVID‐19 pandemic: Negative anti‐SARS‐CoV‐2 immunohistochemistry in six patients and comparison to perniosis before the emergence of SARS‐CoV‐2. Journal Of Cutaneous Pathology 2020, 47: 997-1002. PMID: 32745281, PMCID: PMC7436569, DOI: 10.1111/cup.13830.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overChilblainsCOVID-19FemaleHumansImmunohistochemistryMaleMiddle AgedSARS-CoV-2ConceptsSARS-CoV-2 nucleocapsid proteinPerivascular lymphocytesImmunohistochemical stainingCOVID-19 pandemicSARS-CoV-2 immunohistochemistryNucleocapsid proteinSARS-CoV-2Inflammatory lesionsHistopathologic findingsIntravascular occlusionMicroscopic findingsPerniosisIntravascular materialLymphocytesLesionsPatientsStainingPandemicSuch casesCuffingHistopathologyCasesImmunohistochemistryFindingsProtein
2019
Observational Study Examining the Diagnostic Practice of Ki67 Staining for Melanocytic Lesions
Vyas NS, Charifa A, Desman GT, Goldberg M, Singh R, Phelps RG, McNiff JM. Observational Study Examining the Diagnostic Practice of Ki67 Staining for Melanocytic Lesions. American Journal Of Dermatopathology 2019, Publish Ahead of Print: &na;. PMID: 31233404, DOI: 10.1097/dad.0000000000001379.Peer-Reviewed Original ResearchMultinucleate cell angiohistiocytoma: A clinicopathologic study of 62 cases and proposed diagnostic criteria
Roy SF, Dong D, Myung P, McNiff JM. Multinucleate cell angiohistiocytoma: A clinicopathologic study of 62 cases and proposed diagnostic criteria. Journal Of Cutaneous Pathology 2019, 46: 563-569. PMID: 30927287, DOI: 10.1111/cup.13463.Peer-Reviewed Original ResearchConceptsMultinucleate cell angiohistiocytomaFollicular inductionDiagnostic criteriaPapillary dermal vesselsMononuclear inflammatory infiltrateHistologic diagnostic criteriaLarge case seriesSpecific histologic criteriaWnt/ß-cateninClinicopathologic studyPerifollicular fibrosisCase seriesHistopathologic evidenceInflammatory infiltrateUnderdiagnosed entityFibrohistiocytic originInflamed lesionsHistologic criteriaDermal vesselsHistopathologic entityDermatopathology laboratoryDermatofibromaß-cateninPossible alterationsFibrosis
2014
p40 is a more specific marker than p63 for cutaneous poorly differentiated squamous cell carcinoma
Alomari AK, Glusac EJ, McNiff JM. p40 is a more specific marker than p63 for cutaneous poorly differentiated squamous cell carcinoma. Journal Of Cutaneous Pathology 2014, 41: 839-845. PMID: 25263848, DOI: 10.1111/cup.12388.Peer-Reviewed Original ResearchConceptsSquamous cell carcinomaAtypical fibroxanthomaCell carcinomaNon-cutaneous squamous-cell carcinomaNuclear stainingNon-squamous tumorsGiant cell tumorCutaneous leiomyosarcomaExclusive nuclear stainingCell tumorsDiagnostic challengeCytokeratin MNF116Focal stainingMNF116Tumor cytoplasmLeiomyosarcomaDiagnostic accuracyControl casesSoft tissueSpecific markersP40StainingCarcinomaP63Tumors
2013
Punctate pemphigus: an underreported direct immunofluorescence pattern
Ko CJ, McNiff JM. Punctate pemphigus: an underreported direct immunofluorescence pattern. Journal Of Cutaneous Pathology 2013, 41: 293-296. PMID: 24372009, DOI: 10.1111/cup.12272.Peer-Reviewed Original ResearchConceptsIntercellular depositionIntercellular IgG depositionDirect immunofluorescence studiesCases of pemphigusDirect immunofluorescence patternsDot-like patternIgG depositionPemphigus vulgarisDiagnostic findingsPemphigus foliaceusPemphigusImmunofluorescence patternImmunoglobulin GImmunofluorescence studiesPotential mechanismsIgGDIF studies
1999
Expression of the apoptosis inhibitor, survivin, in nonmelanoma skin cancer and gene targeting in a keratinocyte cell line.
Grossman D, McNiff J, Li F, Altieri D. Expression of the apoptosis inhibitor, survivin, in nonmelanoma skin cancer and gene targeting in a keratinocyte cell line. Laboratory Investigation 1999, 79: 1121-6. PMID: 10496530.Peer-Reviewed Original ResearchConceptsSquamous cell carcinomaBasal cell carcinomaNonmelanoma skin cancerHypertrophic actinic keratosisCell carcinomaSkin cancerKeratinocyte cell lineCutaneous squamous cell carcinomaG0/G1 fractionCell linesAdvanced diseaseBowen's diseaseActinic keratosisSurvivin dominant-negative mutantPremalignant lesionsTherapeutic targetingApoptosis inhibitor survivinSurvivin expressionFlow cytometryWestern blottingDecreased levelsMorpheaform subtypesCancerSpontaneous apoptosisDiseaseEpithelioid Cell Histiocytoma: A Simulant of Vascular and Melanocytic Neoplasms
Glusac E, McNiff J. Epithelioid Cell Histiocytoma: A Simulant of Vascular and Melanocytic Neoplasms. American Journal Of Dermatopathology 1999, 21: 1-7. PMID: 10027517, DOI: 10.1097/00000372-199902000-00001.Peer-Reviewed Original Research
1998
Mycosis Fungoides Palmaris et Plantaris or Acral Pagetoid Reticulosis?
McNiff J, Schechner J, Crotty P, Glusac E. Mycosis Fungoides Palmaris et Plantaris or Acral Pagetoid Reticulosis? American Journal Of Dermatopathology 1998, 20: 271-275. PMID: 9650701, DOI: 10.1097/00000372-199806000-00009.Peer-Reviewed Original ResearchConceptsMycosis fungoides palmaris et plantarisWoringer-Kolopp diseasePalmaris et plantarisPagetoid reticulosisEpidermotropic atypical lymphocytesPolymerase chain reaction studiesT-cell receptor betaT-cell clonalityClonal gene rearrangementsEpidermotropic lymphocytesRecurrent plaquesAtypical lymphocytesCutaneous plaquesSuppressor/Dermal infiltrateMycosis fungoidesSystemic diseaseAcral sitesT cellsBiologic potentialHistologic resemblanceIntraepidermal lymphocytesReceptor betaDiseasePlantaris