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 casesCuffingHistopathologyCasesImmunohistochemistryFindingsProteinCutaneous Involvement in Plasma Cell Myeloma
Panse G, Subtil A, McNiff JM, Glusac EJ, Ko CJ, Galan A, Myung P, Xu ML. Cutaneous Involvement in Plasma Cell Myeloma. American Journal Of Clinical Pathology 2020, 155: 106-116. PMID: 32885235, DOI: 10.1093/ajcp/aqaa122.Peer-Reviewed Original ResearchConceptsPlasma cell myelomaCutaneous involvementSquamous cell carcinomaAmyloid depositionCell carcinomaCell myelomaCases of PCMBone marrow involvementCyclin D1 immunoreactivityDisease-related deathLight chain restrictionCCND1 gene rearrangementMarrow involvementSkin involvementClinicopathologic featuresCytomorphologic spectrumCutaneous lesionsPoor outcomeCommon immunophenotypeChain restrictionClinical dataCytogenetic findingsOlder individualsGene rearrangementsMyeloma
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
2000
Primary cutaneous follicle center cell lymphoma with follicular growth pattern
Cerroni L, Arzberger E, Puütz B, Hoüfler G, Metze D, Sander C, Rose C, Wolf P, Ruütten A, McNiff J, Kerl H. Primary cutaneous follicle center cell lymphoma with follicular growth pattern. Blood 2000, 95: 3922-3928. PMID: 10845929, DOI: 10.1182/blood.v95.12.3922.Peer-Reviewed Original ResearchConceptsB-cell infiltratesFollicular growth patternGerminal centersPrimary cutaneous follicle center cell lymphomaCutaneous follicle center cell lymphomaPrimary cutaneous follicular lymphomaCutaneous B-cell lymphomaCutaneous follicular lymphomaSame monoclonal populationFollicle center cell lymphomaCutaneous B-cell infiltratesBone marrow biopsyReactive germinal centersB-cell lymphomaFollicle center cellsBcl-2 protein expressionExtracutaneous spreadStaging investigationsPolymerase chain reaction analysisMarrow biopsyImmunophenotypic criteriaNeoplastic folliclesFollicular patternMonoclonal rearrangementSkin lesions
1999
Expression and Targeting of the Apoptosis Inhibitor, Survivin, in Human Melanoma
Grossman D, McNiff J, Li F, Altieri D. Expression and Targeting of the Apoptosis Inhibitor, Survivin, in Human Melanoma. Journal Of Investigative Dermatology 1999, 113: 1076-1081. PMID: 10594755, DOI: 10.1046/j.1523-1747.1999.00776.x.Peer-Reviewed Original ResearchConceptsInvasive malignant melanomaMalignant melanomaDominant negative mutantCultured normal human melanocytesCell cycle progressionApoptosis inhibitor Bcl-2G1 DNA contentNormal human melanocytesSurvivin expressionApoptosis inhibitor survivinApoptosis regulationEndogenous survivinNegative mutantTwo-color flow cytometryGenotoxic stimuliMalignant melanoma cell linesSurvivin dominant-negative mutantCycle progressionMetastatic malignant melanomaApoptosis inhibitorMelanoma cell linesHuman melanocytesMIB-1 stainingApoptosis inhibitionCases of nevusImmunohistochemical comparison of cutaneous lymphadenoma, trichoblastoma, and basal cell carcinoma: support for classification of lymphadenoma as a variant of trichoblastoma
McNiff J, Eisen R, Glusac E. Immunohistochemical comparison of cutaneous lymphadenoma, trichoblastoma, and basal cell carcinoma: support for classification of lymphadenoma as a variant of trichoblastoma. Journal Of Cutaneous Pathology 1999, 26: 119-124. PMID: 10235376, DOI: 10.1111/j.1600-0560.1999.tb01815.x.Peer-Reviewed Original ResearchConceptsBasal cell carcinomaVariant of trichoblastomaCutaneous lymphadenomaCell carcinomaLangerhans cellsNodular basal cell carcinomaCK20-positive Merkel cellsS100-positive cellsBcl-2CD30-positive cellsCharacteristic immunohistochemical findingsSimilar staining patternLymphoid infiltratesImmunohistochemical findingsStromal stainingTumor groupEpithelial tumorsImmunohistochemical comparisonUncertain histogenesisMerkel cellsTrichoblastomaS100 proteinCD1aLymphadenomaStaining pattern