2022
COVID-19 & differential effects in twins: Insights from Placenta Pathology
Moriarty K, Yu M, Hussain N, Zgutka K, Sanders MM, Harigopal M, Wang J, Wang X, Hui P, Liu C, Sink D, Shields A. COVID-19 & differential effects in twins: Insights from Placenta Pathology. Placenta 2022, 124: 62-66. PMID: 35640456, PMCID: PMC9121647, DOI: 10.1016/j.placenta.2022.05.014.Peer-Reviewed Original ResearchConceptsSARS-CoV-2Perinatal lossCOVID-19Adverse pregnancy outcomesMaternal-fetal interfaceTime of infectionDifferential effectsPregnancy outcomesPremature deliveryFetal interfaceGestational agePlacenta pathologyTwin pregnanciesMembranous expressionFemale fetusesFetal sexViral detection methodsViral receptorsFemale twinsTissue resultsPregnancyPlacentaTask ForceSuccumbedFetuses
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 casesCuffingHistopathologyCasesImmunohistochemistryFindingsProtein
2016
Metastatic thyroid carcinoma presenting as malignant pleural effusion: A cytologic review of 5 cases
Vyas M, Harigopal M. Metastatic thyroid carcinoma presenting as malignant pleural effusion: A cytologic review of 5 cases. Diagnostic Cytopathology 2016, 44: 1085-1089. PMID: 27456348, DOI: 10.1002/dc.23547.Peer-Reviewed Original ResearchConceptsMetastatic thyroid carcinomaThyroid transcription factor-1Pleural fluidThyroid carcinomaMalignant pleural effusionPleural effusionTranscription factor 1Thyroid originImmunohistochemical stainsLung adenocarcinomaCarcinomaRight diagnosisUseful markerClinical contextDiagnosisFactor 1ThyroglobulinMarkersAdenocarcinomaEffusionMalignancy
2012
Cytoplasmic vacuolization: An under‐recognized cytomorphologic feature in endocrine tumors of the pancreas
Levy GH, Finkelstein A, Harigopal M, Chhieng D, Cai G. Cytoplasmic vacuolization: An under‐recognized cytomorphologic feature in endocrine tumors of the pancreas. Diagnostic Cytopathology 2012, 41: 623-628. PMID: 22807461, DOI: 10.1002/dc.22893.Peer-Reviewed Original ResearchConceptsFine-needle aspirationPancreatic endocrine neoplasmsCytomorphologic featuresDiagnostic pitfallsEndoscopic ultrasound-guided fine-needle aspirationUltrasound-guided fine-needle aspirationFine cytoplasmic vacuolesClinicopathologic featuresDiagnostic challengeEndocrine tumorsEndocrine neoplasmsSmall biopsiesAccurate diagnosisImmunocytochemical studyCytoplasmic vacuoles
2011
Littoral cell angioma of the spleen diagnosed by endoscopic ultrasound‐guided fine‐needle aspiration biopsy
Nagarajan P, Cai G, Padda MS, Selbst M, Kowalski D, Proctor DD, Chhieng D, Aslanian HR, Harigopal M. Littoral cell angioma of the spleen diagnosed by endoscopic ultrasound‐guided fine‐needle aspiration biopsy. Diagnostic Cytopathology 2011, 39: 318-322. PMID: 21488173, DOI: 10.1002/dc.21384.Peer-Reviewed Original ResearchConceptsEndoscopic ultrasound-guided fine-needle aspiration biopsyLittoral cell angiomaUltrasound-guided fine-needle aspiration biopsyFine-needle aspiration biopsyCytologic featuresAspiration biopsyEndoscopic ultrasound examinationCharacteristic cytologic featuresPrevious case reportsFine-needle aspiration samplesNeedle aspiration biopsyPrimary vascular neoplasmSplenic red pulpCase reportVascular lesionsVascular neoplasmUltrasound examinationImmunohistochemical analysisAspiration samplesAngiomaRed pulpSinusoidal lining
2006
Vascular endothelial growth factor, FLT‐1, and FLK‐1 analysis in a pancreatic cancer tissue microarray
Chung GG, Yoon HH, Zerkowski MP, Ghosh S, Thomas L, Harigopal M, Charette LA, Salem RR, Camp RL, Rimm DL, Burtness BA. Vascular endothelial growth factor, FLT‐1, and FLK‐1 analysis in a pancreatic cancer tissue microarray. Cancer 2006, 106: 1677-1684. PMID: 16532435, DOI: 10.1002/cncr.21783.Peer-Reviewed Original ResearchConceptsPancreatic cancer tissue microarrayCancer tissue microarrayTissue microarrayVEGF receptor 1Flt-1Receptor 1Kaplan-Meier survival curvesVascular endothelial growth factor (VEGF) expressionIndependent prognostic factorVascular endothelial growth factorFlk-1Growth factor expressionEndothelial growth factorPrimary antibodyFlt-1 expressionOverall survivalPrognostic factorsWorse survivalAggressive diseaseDisease stagePoor prognosisTumor expressionPancreatic cancerPancreatic adenocarcinomaPrincipal receptorMolecular Classification Identifies a Subset of Human Papillomavirus–Associated Oropharyngeal Cancers With Favorable Prognosis
Weinberger PM, Yu Z, Haffty BG, Kowalski D, Harigopal M, Brandsma J, Sasaki C, Joe J, Camp RL, Rimm DL, Psyrri A. Molecular Classification Identifies a Subset of Human Papillomavirus–Associated Oropharyngeal Cancers With Favorable Prognosis. Journal Of Clinical Oncology 2006, 24: 736-747. PMID: 16401683, DOI: 10.1200/jco.2004.00.3335.Peer-Reviewed Original ResearchConceptsOropharyngeal squamous cell carcinomaHuman papillomavirusFavorable prognosisClass IIILocal recurrencePrognostic valueHuman Papillomavirus–Associated Oropharyngeal CancerHPV DNA presenceHPV16 viral loadDisease-free survivalMultivariable survival analysisSquamous cell carcinomaLong-term patientsThree-class modelReal-time polymerase chain reactionHPV statusLow p53Only patientsOverall survivalOropharyngeal cancerViral loadCell carcinomaPolymerase chain reactionClinical trialsP16 overexpression
2005
Prepubertal Gynecomastia with Lobular Differentiation
Harigopal M, Murray MP, Rosen PP, Shin SJ. Prepubertal Gynecomastia with Lobular Differentiation. The Breast Journal 2005, 11: 48-51. PMID: 15647078, DOI: 10.1111/j.1075-122x.2005.21442.x.Peer-Reviewed Original Research
2004
Prognostic Significance of p16 Protein Levels in Oropharyngeal Squamous Cell Cancer
Weinberger PM, Yu Z, Haffty BG, Kowalski D, Harigopal M, Sasaki C, Rimm DL, Psyrri A. Prognostic Significance of p16 Protein Levels in Oropharyngeal Squamous Cell Cancer. Clinical Cancer Research 2004, 10: 5684-5691. PMID: 15355894, DOI: 10.1158/1078-0432.ccr-04-0448.Peer-Reviewed Original ResearchConceptsSquamous cell cancerOropharyngeal squamous cell carcinomaOropharyngeal squamous cell cancerDisease-free survivalLocal recurrence rateSquamous cell carcinomaCell cancerOverall survivalRecurrence rateCell carcinomaP16 overexpressionNeck squamous cell cancerLow local recurrence rateAdvanced Tumor-NodeMean patient followIndependent prognostic factorHigh histologic gradeP16 expression statusOverexpression of p16Local recurrencePrognostic factorsPrognostic importanceP16 protein expressionPrognostic significanceHistologic grade
2003
Images in Pathology
Harigopal M, Hoda SA, Seshan SV. Images in Pathology. International Journal Of Surgical Pathology 2003, 11: 313-313. PMID: 14615827, DOI: 10.1177/106689690301100409.Peer-Reviewed Original Research