2024
VEXAS Syndrome: Histiocytoid Cells With Feathery Cytoplasm as a Clue to the Diagnosis
Ko C, Odell I, Gehlhausen J, Leventhal J, McNiff J, Zubek A. VEXAS Syndrome: Histiocytoid Cells With Feathery Cytoplasm as a Clue to the Diagnosis. Journal Of Cutaneous Pathology 2024 PMID: 39610062, DOI: 10.1111/cup.14757.Peer-Reviewed Original ResearchTen Year Follow-up After Face Transplantation – a Single Center Retrospective Cohort Study
Huelsboemer L, Kauke-Navarro M, Boroumand S, Parikh N, Hosseini H, Yu C, Stögner V, Ko C, Perry B, Formica R, Hung P, Mahajan A, Azzi J, Murphy G, Pomahac B. Ten Year Follow-up After Face Transplantation – a Single Center Retrospective Cohort Study. American Journal Of Transplantation 2024 PMID: 39413877, DOI: 10.1016/j.ajt.2024.10.007.Peer-Reviewed Original ResearchChronic rejectionFace transplantationFollow-upSingle center retrospective cohort studyFunctional outcomesSensory returnAnalysis of functional outcomesMedian follow-upIncidence of malignancyMetabolic side effectsGraft rejection episodesComputed tomography angiogramRetrospective cohort studyEvidence of vasculopathyFollow-up periodLong-term outcomesYear follow-upFacial motor functionRejection episodesInfectious complicationsTransplant recipientsPatient ageGraft retentionMedical complicationsCohort studyD111. Ten year Follow up after Face Transplantation
Huelsboemer L, Kauke-Navarro M, Boroumand S, Parikh N, Hosseini H, Yu C, Stögner V, Ko C, Perry B, Formica R, Hung P, Mahajan A, Azzi J, Murphy G, Pomahac B. D111. Ten year Follow up after Face Transplantation. Plastic & Reconstructive Surgery Global Open 2024, 12: 120-121. PMCID: PMC11340540, DOI: 10.1097/01.gox.0001018916.83172.5e.Peer-Reviewed Original ResearchCognitive Bias in the Patient Encounter: Part II. Debiasing using an adaptive toolbox
Ko C, Gehlhausen J, Cohen J, Jiang Y, Myung P, Croskerry P. Cognitive Bias in the Patient Encounter: Part II. Debiasing using an adaptive toolbox. Journal Of The American Academy Of Dermatology 2024 PMID: 38588820, DOI: 10.1016/j.jaad.2024.02.061.Peer-Reviewed Original ResearchCognitive Bias in the Patient Encounter: Part I. Background and significance
Ko C, Gehlhausen J, Cohen J, Croskerry P. Cognitive Bias in the Patient Encounter: Part I. Background and significance. Journal Of The American Academy Of Dermatology 2024 PMID: 38588821, DOI: 10.1016/j.jaad.2024.01.091.Peer-Reviewed Original ResearchSpiny Keratoderma: Clinical and Histopathological Findings in a Series of 3 Cases
Hanly A, Turner N, Ko C, Panse G. Spiny Keratoderma: Clinical and Histopathological Findings in a Series of 3 Cases. American Journal Of Dermatopathology 2024, 46: 439-442. PMID: 38574081, DOI: 10.1097/dad.0000000000002705.Peer-Reviewed Original ResearchUsing Shame as a Signal to Talk about Suicide
Siegel J, Ko C. Using Shame as a Signal to Talk about Suicide. Clinical Chemistry 2024, 70: 786-788. PMID: 38441566, DOI: 10.1093/clinchem/hvae017.Peer-Reviewed Original ResearchLymphadenopathy and lymph node rejection following facial vascularized composite allotransplantation
Kauke-Navarro M, Sadigh S, Lee C, Panayi A, Knoedler L, Knoedler S, Stoegner V, Huelsboemer L, Jamil A, Ko C, Lian C, Murphy G, Pomahac B. Lymphadenopathy and lymph node rejection following facial vascularized composite allotransplantation. Journal Of Plastic Reconstructive & Aesthetic Surgery 2024, 91: 268-275. PMID: 38430863, DOI: 10.1016/j.bjps.2024.02.024.Peer-Reviewed Original ResearchLymph nodesVascularized composite allograftsGranzyme BDonor-derived immune cellsFacial vascularized composite allograftMedian time of presentationFacial vascularized composite allotransplantationImmunological processesGranzyme B expressionCytotoxic T cellsNecrotizing histiocytic lymphadenitisHead and neckRetrospective cohort studyTime of presentationStages of follow-upCoexistence of donorFace transplant patientsBilateral adenopathyIncreased histiocytesSuperficial lymph nodesVascularized composite allotransplantationBilateral lymphadenopathyAllograft rejectionTransplant patientsDendritic cellsA pilot study of p53 immunohistochemistry in atypical squamous lesions, using a vulvar scoring system
Niu N, Roy S, Ko C. A pilot study of p53 immunohistochemistry in atypical squamous lesions, using a vulvar scoring system. Journal Of Cutaneous Pathology 2024, 51: 379-386. PMID: 38317537, DOI: 10.1111/cup.14591.Peer-Reviewed Original ResearchCutaneous squamous cell carcinomaLow-risk cSCCAtypical squamous lesionsSquamous lesionsP53 positivityHigh-risk cutaneous squamous cell carcinomaP53 labelingDiagnosis of cutaneous squamous cell carcinomaPattern of p53 mutationsScoring systemBenign squamous lesionsHigh-risk featuresSquamous cell carcinomaImmunohistochemical scoring systemVulvar casesP53 immunostainingBenign mimicsP53 immunohistochemistryCell carcinomaP53 mutationsTP53 sequencingHistopathologic overlapPilot studyCutaneous casesLesionsPitfalls 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‐negativity in sclerosing nevi with pseudomelanomatous features supports classification as an indolent lesion
Tang H, McNiff J, Glusac E, Ko C. PRAME‐negativity in sclerosing nevi with pseudomelanomatous features supports classification as an indolent lesion. Journal Of Cutaneous Pathology 2023, 50: 1001-1005. PMID: 37565491, DOI: 10.1111/cup.14505.Peer-Reviewed Original ResearchVascular-Targeted Therapy for Systemic Lupus Erythematosus–Associated Vasculitis
Xu S, Patrignelli R, Ramachandran S, Koumpouras F, Desir D, Ko C, Gehlhausen J. Vascular-Targeted Therapy for Systemic Lupus Erythematosus–Associated Vasculitis. JAMA Dermatology 2023, 159: 460-462. PMID: 36884229, DOI: 10.1001/jamadermatol.2023.0077.Peer-Reviewed Original ResearchSquamous carcinogenesis: potential truncal mutations
Tang H, Seykora J, Ko C. Squamous carcinogenesis: potential truncal mutations. Human Pathology 2023, 140: 32-38. PMID: 37001739, DOI: 10.1016/j.humpath.2023.03.016.Peer-Reviewed Original ResearchCognitive bias in pathology, as exemplified in dermatopathology
Ko C, Glusac E. Cognitive bias in pathology, as exemplified in dermatopathology. Human Pathology 2023, 140: 267-275. PMID: 36906184, DOI: 10.1016/j.humpath.2023.03.003.Peer-Reviewed Original ResearchIL17A mRNA Staining Distinguishes Palmoplantar Psoriasis from Hyperkeratotic Palmoplantar Eczema in Diagnostic Skin Biopsies
Chen J, Murphy M, Singh K, Wang A, Chow R, Kim R, Cohen J, Ko C, Damsky W. IL17A mRNA Staining Distinguishes Palmoplantar Psoriasis from Hyperkeratotic Palmoplantar Eczema in Diagnostic Skin Biopsies. JID Innovations 2023, 3: 100189. PMID: 37205304, PMCID: PMC10186614, DOI: 10.1016/j.xjidi.2023.100189.Peer-Reviewed Original ResearchMycosis fungoides palmaris et plantarisPalmoplantar psoriasisNonacral sitesPalmoplantar eczemaMRNA expressionAcral skinIL-13 expressionPalmaris et plantarisDiagnostic skin biopsyDermatopathology databaseIL-17AHistopathologic featuresClinical managementBiopsy specimensSkin biopsiesCytokine biomarkersUseful biomarkerEczemaPsoriasisDiagnostic clarityMRNA stainingDermatosesBiomarkersSitu hybridizationSkin
2022
003 Atypical bullous pemphigoid due to radiation therapy
Belzer A, Ko C, Leventhal J. 003 Atypical bullous pemphigoid due to radiation therapy. Journal Of Investigative Dermatology 2022, 142: s1. DOI: 10.1016/j.jid.2022.05.057.Peer-Reviewed Case Reports and Technical Notes
2021
LB731 GJA4 somatic mutations drive venous malformation in the skin and liver and reveal a novel pathway for therapeutic intervention
Ugwu N, Atzmony L, Ellis K, Panse G, Jain D, Ko C, Nassiri N, Choate K. LB731 GJA4 somatic mutations drive venous malformation in the skin and liver and reveal a novel pathway for therapeutic intervention. Journal Of Investigative Dermatology 2021, 141: b8. DOI: 10.1016/j.jid.2021.07.021.Peer-Reviewed Original Research
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 ResearchConceptsSARS-CoV-2 nucleocapsid proteinPerivascular lymphocytesImmunohistochemical stainingCOVID-19 pandemicSARS-CoV-2 immunohistochemistryNucleocapsid proteinSARS-CoV-2Inflammatory lesionsHistopathologic findingsIntravascular occlusionMicroscopic findingsPerniosisIntravascular materialLymphocytesLesionsPatientsStainingPandemicSuch casesCuffingHistopathologyCasesImmunohistochemistryFindingsProteinA detailed analysis of the distribution, morphology, and histopathology of complex purpura in hospitalized patients: A case series of 68 patients
Gehlhausen JR, Wetter DA, Nelson C, Ramachandran S, McNiff JM, Ko CJ. A detailed analysis of the distribution, morphology, and histopathology of complex purpura in hospitalized patients: A case series of 68 patients. Journal Of The American Academy Of Dermatology 2020, 84: 1188-1196. PMID: 32376433, DOI: 10.1016/j.jaad.2020.04.149.Peer-Reviewed Original ResearchConceptsSmall vessel vasculitisLeukocytoclastic vasculitisMicrovascular occlusionIgA vasculitisCase seriesCommon diagnosisSystemic diseaseDermatologic consultationHigh mortalityTertiary care centerMajority of patientsMedium vessel vasculitisBiopsy findingsHospitalized patientsCare centerRetrospective natureVasculitisDifferential diagnosisInpatient consultationsPurpuraClinical morphologyDiagnostic utilityPatientsInpatientsSuperficial vessels