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Profile

Kartik Viswanathan

  • Department of Pathology and Laboratory Medicine
    Assistant Professor
  • kartik.viswanathan@emory.edu
Head shot of Kartik Viswanathan

Academic Appointment

  • Instructor, Head and Neck Pathology, Cytopathology, Pathology and Laboratory Medicine, Emory University Hospital Midtown

Education

Degrees

  • MD from Weill Cornell Medicine
  • PhD from Stanford University

Research

Publications

  • Comprehensive Clinicopathologic, Morphologic, and Molecular Evaluation and Outcomes in Polymorphous Adenocarcinoma Tumors with Applicability of a Two-Tiered Grading System.
    Mod Pathol Page(s): 100803
    05/28/2025 Authors: Viswanathan K; Tharp S; Lubin D; Saeed F; Magliocca K; Delfin L; Bilodeau E; Ilyas G; Ghossein R; Xu B
  • The Potential Utility of RAS Q61R Immunohistochemistry as a Screening Tool in Pre-operative Fine Needle Aspirates of Medullary Thyroid Carcinoma.
    Endocr Pathol Volume: 35 Page(s): 385 - 396
    12/01/2024 Authors: Deyette B; Lubin DJ; Cheriyan AM; Sheen A; Sadow PM; Gill AJ; Viswanathan K
  • Tyrosine-Like Crystalloids Localize to Non-Neoplastic True Vocal Cord and Attachments.
    Head Neck Pathol Volume: 18 Page(s): 81
    08/23/2024 Authors: Dababneh MN; Farris AB; Steward-Tharp SM; Viswanathan K; Lubin D; Saeed F; Magliocca KR
  • The histological spectrum and immunoprofile of head and neck NUT carcinoma: A multicentre series of 30 cases.
    Histopathology Volume: 85 Page(s): 317 - 326
    08/01/2024 Authors: Viswanathan K; Hahn E; Dogan S; Weinreb I; Dickson BC; MacMillan C; Katabi N; Magliocca K; Ghossein R; Xu B
  • Atrophic changes in thyroid tumors are strong indicators of underlying DICER1 mutations: a bi-institutional genotype-phenotype correlation study.
    Virchows Arch Volume: 485 Page(s): 105 - 114
    07/01/2024 Authors: Condello V; Roberts JW; Stenman A; Larsson C; Viswanathan K; Juhlin CC
  • Comprehensive evaluation of cytomorphologic, histologic, and molecular features of DICER1-altered thyroid lesions on FNA: A multipractice experience.
    Cancer Cytopathol Volume: 132 Page(s): 359 - 369
    06/01/2024 Authors: Lengyel K; Lubin DJ; Hsiao W-Y; Sirotnikov S; Luo G; Roberts JW; Shi Q; Magliocca K; Lewis MM; Sears DL
  • Salivary Mucinous Adenocarcinoma Masquerading as Chronic Submandibular Sialolithiasis.
    Laryngoscope Volume: 134 Page(s): 2258 - 2261
    05/01/2024 Authors: Vettikattu NT; Daoud GE; Viswanathan K; Kaka AS
  • Novel prognostic nomogram for predicting recurrence-free survival in medullary thyroid carcinoma.
    Histopathology Volume: 84 Page(s): 947 - 959
    05/01/2024 Authors: Aksoy YA; Xu B; Viswanathan K; Ahadi MS; Al Ghuzlan A; Alzumaili B; Bani M-A; Barletta JA; Chau N; Chou A
  • Grading medullary thyroid carcinoma on fine-needle aspiration cytology specimens with the International Medullary Thyroid Carcinoma Grading System: Acytologic-histologic correlation.
    Cancer Cytopathol Volume: 132 Page(s): 224 - 232
    04/01/2024 Authors: Viswanathan K; Behrman DB; Lubin DJ
  • Reply to "Monkeypox virus cytologic findings".
    Am J Clin Pathol Volume: 161 Page(s): 314
    03/01/2024 Authors: Guarner J; Viswanathan K; Lubin DJ
  • Association of the Genomic Profile of Medullary Thyroid Carcinoma with Tumor Characteristics and Clinical Outcomes in an International Multicenter Study.
    Thyroid Volume: 34 Page(s): 167 - 176
    02/01/2024 Authors: Xu B; Viswanathan K; Ahadi MS; Ahmadi S; Alzumaili B; Bani M-A; Baudin E; Behrman DB; Capelletti M; Chau NG
  • Monkeypox virus cytologic findings: An institutional experience with an emerging threat.
    Am J Clin Pathol Volume: 161 Page(s): 9 - 15
    01/04/2024 Authors: Viswanathan K; Mansmann KM; Workowski K; Guarner J; Heiman KM; Lubin DJ
  • Ki67 proliferation index in medullary thyroid carcinoma: acomparative study of multiple counting methods and validation of image analysis and deep learning platforms.
    Histopathology Volume: 83 Page(s): 981 - 988
    12/01/2023 Authors: Nadeem S; Hanna MG; Viswanathan K; Marino J; Ahadi M; Alzumaili B; Bani M-A; Chiarucci F; Chou A; De Leo A
  • Independent Validation of the International Grading System for Medullary Thyroid Carcinoma: A Single Institution Experience.
    Mod Pathol Volume: 36 Page(s): 100235
    09/01/2023 Authors: Lubin DJ; Behrman DB; Goyal S; Magliocca K; Shi Q; Chen AY; Viswanathan K
  • Exploration of Digital Image Analysis for Ki67 Quantification in the Grading of Medullary Thyroid Carcinoma: A Pilot Study with 85 Cases.
    Head Neck Pathol Volume: 17 Page(s): 638 - 646
    09/01/2023 Authors: Behrman DB; Lubin DJ; Magliocca K; Shi Q; Viswanathan K
  • Spotlight: Rising stars in cytology.
    Cancer Cytopathol Volume: 131 Page(s): 478 - 479
    08/01/2023 Authors: Viswanathan K
  • Does Milan affect management? A retrospective analysis of resection rate and time to surgery among Milan categories.
    Diagn Cytopathol Volume: 51 Page(s): 221 - 229
    04/01/2023 Authors: Tenney TB; Mullane PC; Viswanathan K; Shi Q; Lui SK; Lubin DJ
  • Significance of oncocytic features in poorly differentiated thyroid carcinoma - a bi-institutional experience.
    Virchows Arch Volume: 482 Page(s): 479 - 491
    03/01/2023 Authors: Xu B; Lubin DJ; Dogan S; Ghossein RA; Viswanathan K
  • The evolving landscape of salivary gland tumors.
    CA Cancer J Clin Volume: 73 Page(s): 597 - 619
    01/01/2023 Authors: Steuer CE; Hanna GJ; Viswanathan K; Bates JE; Kaka AS; Schmitt NC; Ho AL; Saba NF
  • Secretory carcinoma of the salivary gland: a multi-institutional clinicopathologic study of 90 cases with emphasis on grading and prognostic factors.
    Histopathology Volume: 81 Page(s): 670 - 679
    11/01/2022 Authors: Xu B; Viswanathan K; Umrau K; Al-Ameri TAD; Dogan S; Magliocca K; Ghossein RA; Cipriani NA; Katabi N
  • Nondiagnostic salivary gland FNAs are associated with decreased risk of malignancy compared with "all-comer" patients: Analysis of the Milan System for Reporting Salivary Gland Cytopathology with a focus on Milan I: Nondiagnostic.
    Cancer Cytopathol Volume: 130 Page(s): 800 - 811
    10/01/2022 Authors: Lui SK; Tenney T; Mullane PC; Viswanathan K; Lubin DJ
  • The solid variant of papillary thyroid carcinoma: a multi-institutional retrospective study.
    Volume: 81 Page(s): 171 - 182
    08/01/2022 Authors: Xu B; Viswanathan K; Zhang L; Edmund LN; Ganly O; Tuttle RM; Lubin D; Ghossein RA
  • Cytomorphologic features of thyroid nodules harboring thyroid adenoma-associated fusion: A single institutional review of 11 cases.
    Diagn Cytopathol Volume: 50 Page(s): 327 - 334
    07/01/2022 Authors: Roberts JW; Lubin DJ; Shi Q; Viswanathan K
  • Head and Neck Acinic Cell Carcinoma: A New Grading System Proposal and Diagnostic Utility of NR4A3 Immunohistochemistry.
    Am J Surg Pathol Volume: 46 Page(s): 933 - 941
    07/01/2022 Authors: Xu B; Saliba M; Ho A; Viswanathan K; Alzumaili B; Dogan S; Ghossein R; Katabi N
  • Ancillary studies on cell blocks from fine needle aspiration specimens of salivary gland lesions: A multi-institutional study.
    Diagn Cytopathol Volume: 50 Page(s): 235 - 252
    05/01/2022 Authors: Tabibi S; Gabrielson M; Saoud C; Davis K; Wangsiricharoen S; Lu R; Tondi Resta I; Viswanathan K; Faquin WC; Baloch Z
  • Application of the Milan System for Reporting Salivary Gland Cytopathology in pediatric patients: An international, multi-institutional study.
    Cancer Cytopathol Volume: 130 Page(s): 370 - 380
    05/01/2022 Authors: Maleki Z; Saoud C; Viswanathan K; Kilic I; Tommola E; Griffin DT; Heider A; Petrone G; Jo VY; Centeno BA
  • Oropharyngeal HPV-Mediated Squamous Cell Carcinoma, Basaloid-type (SOX10+): A Variant To Be Highlighted In Our Diagnostic Terminology?
    Volume: 102 Page(s): 864 - 865
    03/01/2022 Authors: Broder K; Saeed F; Lubin D; (Judy) Shi Q; Viswanathan K; Patel M; Schmitt N; Magliocca K
  • Oropharyngeal HPV-Mediated Squamous Cell Carcinoma, Basaloid-type (SOX10+): A Variant To Be Highlighted In Our Diagnostic Terminology?
    Volume: 35 Page(s): 864 - 865
    03/01/2022 Authors: Broder K; Saeed F; Lubin D; (Judy) Shi Q; Viswanathan K; Patel M; Schmitt N; Magliocca K
  • Surveying for Therapeutic Targets in Poorly Differentiated Carcinoma in the Sinonasal Tract: Immunohistochemical assessment of IDH2, SSTR2A, and CXCR4 in Tumors with Neuroendocrine Features
    Volume: 102 Page(s): 905 - 905
    03/01/2022 Authors: Steward-Tharp S; Ponnatt TS; Magliocca K; Lubin D; Mahdi Z; Saeed F; Viswanathan K; Ai D; (Judy) Shi Q
  • Tyrosine-Like Crystalloids Occur In Non-Neoplastic True Vocal Fold Tissues
    Volume: 102 Page(s): 866 - 867
    03/01/2022 Authors: Dababneh M; Steward-Tharp S; (Judy) Shi Q; Viswanathan K; Lubin D; Saeed F; Mahdi Z; Magliocca K
  • Redefining Solid Variant of Papillary Thyroid Carcinoma (PTC-SV): A Multicentric Retrospective Study
    Volume: 35 Page(s): 400 - 401
    03/01/2022 Authors: Xu B; Edmund L; Zhang L; Ganly O; Viswanathan K; Lubin D; Ghossein R
  • Surveying for Therapeutic Targets in Poorly Differentiated Carcinoma in the Sinonasal Tract: Immunohistochemical assessment of IDH2, SSTR2A, and CXCR4 in Tumors with Neuroendocrine Features
    Volume: 35 Page(s): 905 - 905
    03/01/2022 Authors: Steward-Tharp S; Ponnatt TS; Magliocca K; Lubin D; Mahdi Z; Saeed F; Viswanathan K; Ai D; (Judy) Shi Q
  • Tyrosine-Like Crystalloids Occur In Non-Neoplastic True Vocal Fold Tissues
    Volume: 35 Page(s): 866 - 867
    03/01/2022 Authors: Dababneh M; Steward-Tharp S; (Judy) Shi Q; Viswanathan K; Lubin D; Saeed F; Mahdi Z; Magliocca K
  • NR4A3 Immunostain Is a Highly Sensitive and Specific Marker for Acinic Cell Carcinoma in Cytologic and Surgical Specimens.
    Am J Clin Pathol Volume: 157 Page(s): 98 - 108
    01/06/2022 Authors: Viswanathan K; Beg S; He B; Zhang T; Cantley R; Lubin DJ; Shi Q; Maleki Z; Asiry S; Rao R
  • Case 39-2021: A 26-Year-Old Woman with Respiratory Failure and Altered Mental Status.
    N Engl J Med Volume: 385 Page(s): 2464 - 2474
    12/23/2021 Authors: Kadar A; Shah VS; Mendoza DP; Lai PS; Aghajan Y; Piazza G; Camargo EC; Viswanathan K
  • Cytomorphologic features of intraductal salivary gland carcinoma: A multi-institutional study of 13 FNA cases with histologic, molecular, and clinical correlations.
    Cancer Cytopathol Volume: 129 Page(s): 928 - 946
    12/01/2021 Authors: Viswanathan K; Sadow PM; Maleki Z; Nishino M; Baloch ZW; Abbott TE; Rao R; Faquin WC
  • Somatostatin receptor 2 is highly sensitive and specific for Epstein-Barr virus-associated nasopharyngeal carcinoma.
    Hum Pathol Volume: 117 Page(s): 88 - 100
    11/01/2021 Authors: Viswanathan K; Sadow PM
  • Highlights and Perspectives From a Collaborative Global Health Pathology Experience in Trinidad and Tobago.
    Am J Clin Pathol Volume: 156 Page(s): 340 - 349
    08/04/2021 Authors: Viswanathan K; Johncilla M
  • Diagnostic discrepancy in second opinion reviews of primary epithelial neoplasms involving salivary gland: An 11-year experience from a tertiary referral center focusing on useful pathologic approaches and potential clinical impacts.
    Head Neck Volume: 43 Page(s): 2497 - 2509
    08/01/2021 Authors: Xu B; Ghossein R; Ho A; Viswanathan K; Khimraj A; Saliba M; Cracchiolo JR; Katabi N
  • The Role of Nuclear Receptor Subfamily 4 Group A Member 3 (NR4A3) Immunohistochemistry in Distinguishing Acinic Cell Carcinoma from Oncocytic Salivary Gland Neoplasms in Surgical and Limited Cytology Specimens: A Multi-Institutional Experience
    Volume: 101 Page(s): 200 - 201
    03/01/2021 Authors: Beg S; Viswanathan K; He B; Zhang T; Cantley R; Lubin D; Maleki Z; Katabi N; Faquin W; Sadow P
  • The Role of Nuclear Receptor Subfamily 4 Group A Member 3 (NR4A3) Immunohistochemistry in Distinguishing Acinic Cell Carcinoma from Oncocytic Salivary Gland Neoplasms in Surgical and Limited Cytology Specimens: A Multi-Institutional Experience
    Volume: 34 Page(s): 200 - 201
    03/01/2021 Authors: Beg S; Viswanathan K; He B; Zhang T; Cantley R; Lubin D; Maleki Z; Katabi N; Faquin W; Sadow P
  • Cytomorphology and diagnostic pitfalls of sebaceous and nonsebaceous salivary gland lymphadenoma: A multi-institutional study.
    Diagn Cytopathol Volume: 49 Page(s): 83 - 95
    01/01/2021 Authors: Viswanathan K; Maleki Z; Pantanowitz L; Cantley R; Faquin WC
  • Assessing the diagnostic accuracy for pleomorphic adenoma and Warthin tumor by employing the Milan System for Reporting Salivary Gland Cytopathology: An international, multi-institutional study.
    Cancer Cytopathol Volume: 129 Page(s): 43 - 52
    01/01/2021 Authors: Allison DB; Smith AP; An D; Miller JA; Shafique K; Song S; Viswanathan K; Eykman E; Rao RA; Wiles A
  • Cytomorphologic features of NTRK-rearranged thyroid carcinoma.
    Cancer Cytopathol Volume: 128 Page(s): 812 - 827
    11/01/2020 Authors: Viswanathan K; Chu Y-H; Faquin WC; Sadow PM
  • Interobserver variability between cytopathologists and cytotechnologists upon application and characterization of the indeterminate category in the Milan System for Reporting Salivary Gland Cytopathology.
    Cancer Cytopathol Volume: 128 Page(s): 828 - 839
    11/01/2020 Authors: Viswanathan K; Patel A; Abdelsayed M; Rosado L; Soong L; Margolskee E; Heymann JJ; Goyal A; Rao RA
  • Insulinoma-associated protein 1 (INSM1) is a robust marker for identifying and grading pancreatic neuroendocrine tumors.
    Cancer Cytopathol Volume: 128 Page(s): 269 - 277
    04/01/2020 Authors: Kim D; Viswanathan K; Goyal A; Rao R
  • Chronic Myelogenous Leukemia Diagnosed in the Setting of Untreated Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma.
    Int J Surg Pathol Volume: 28 Page(s): 216 - 224
    04/01/2020 Authors: Viswanathan K; Roboz G; Chadburn A; Mathew S
  • Leiomyoma of the Nipple: A common neoplasm in an uncommon location.
    Breast J Volume: 26 Page(s): 529 - 530
    03/01/2020 Authors: Zhong E; Swistel A; Viswanathan K; Hoda SA
  • The diagnostic utility of zinc E-box 1 (ZEB1) transcription factor for identification of pulmonary sarcomatoid carcinoma in cytologic and surgical specimens.
    J Am Soc Cytopathol Volume: 9 Page(s): 55 - 61
    01/01/2020 Authors: Viswanathan K; Siddiqui MT; Borczuk AC
  • Application of the Milan System for Reporting Submandibular Gland Cytopathology: An international, multi-institutional study.
    Cancer Cytopathol Volume: 127 Page(s): 306 - 315
    05/01/2019 Authors: Maleki Z; Baloch Z; Lu R; Shafique K; Song SJ; Viswanathan K; Rao RA; Lefler H; Fatima A; Wiles A
  • Genetic and Epigenetic Determinants of Aggressiveness in Cribriform Carcinoma of the Prostate.
    Mol Cancer Res Volume: 17 Page(s): 446 - 456
    02/01/2019 Authors: Elfandy H; Armenia J; Pederzoli F; Pullman E; Pertega-Gomes N; Schultz N; Viswanathan K; Vosoughi A; Blattner M; Stopsack KH
  • Insulinoma-associated protein 1 is a sensitive and specific marker for lung neuroendocrine tumors in cytologic and surgical specimens.
    J Am Soc Cytopathol Volume: 8 Page(s): 299 - 308
    01/01/2019 Authors: Viswanathan K; Siddiqui MT; Borczuk AC
  • Mucoepidermoid carcinoma, acinic cell carcinoma, and adenoid cystic carcinoma on fine-needle aspiration biopsy and The Milan System: an international multi-institutional study.
    Volume: 8 Page(s): 270 - 277
    01/01/2019 Authors: Miller JA; An D; Shafique K; Song S; Rao RA; Viswanathan K; Eykman E; Wiles A; Ali SZ; Field A
  • Orthopedia homeobox protein (OTP) is a sensitive and specific marker for primary pulmonary carcinoid tumors in cytologic and surgical specimens.
    J Am Soc Cytopathol Volume: 8 Page(s): 39 - 46
    01/01/2019 Authors: Viswanathan K; Borczuk AC; Siddiqui MT
  • Mammary juvenile papillomatosis ("Swiss cheese" disease): Study of 121 cases reiterates need for long-term follow-up.
    Breast J Volume: 24 Page(s): 1136 - 1137
    11/01/2018 Authors: Cheng E; D'Alfonso T; Patel A; Viswanathan K; Hoda S
  • The role of the Milan System for Reporting Salivary Gland Cytopathology: A 5-year institutional experience.
    Cancer Cytopathol Volume: 126 Page(s): 541 - 551
    08/01/2018 Authors: Viswanathan K; Sung S; Scognamiglio T; Yang GCH; Siddiqui MT; Rao RA
  • Fine needle aspiration of pilomatrixoma: Cytologic features on thinprep and diagnostic pitfalls.
    Diagn Cytopathol Volume: 46 Page(s): 452 - 455
    05/01/2018 Authors: Viswanathan K; Sung SJ; Scognamiglio T; Hoda RS; Rao RA
  • Bilateral Multiple Mammary Myofibroblastomas in an Adult Male.
    Int J Surg Pathol Volume: 26 Page(s): 242 - 244
    05/01/2018 Authors: Viswanathan K; Cheng E; Linver MN; Feddersen R; Hoda S
  • Acquired myospherulosis secondary to gluteal augmentation on fine needle aspiration cytology: A diagnostic challenge.
    Diagn Cytopathol Volume: 46 Page(s): 438 - 442
    05/01/2018 Authors: Alperstein S; Dilcher T; Viswanathan K; Rao RA; Siddiqui MT; Giorgadze T
  • Solitary Neurofibroma of the Breast, and "The Man From Istanbul" Syndrome.
    Int J Surg Pathol Volume: 26 Page(s): 153 - 154
    04/01/2018 Authors: Cheng E; Viswanathan K; Hoda S
  • Fine needle aspiration of meningioma: Cytologic features on ThinPrep.
    Diagn Cytopathol Volume: 46 Page(s): 98 - 100
    01/01/2018 Authors: Viswanathan K; Sung S; Facey KT; Alperstein SA; Pisapia DJ; Rao RA; Hoda RS
  • Juvenile Papillomatosis (Swiss-Cheese Disease) of Breast in an Adult Male With Sequential Diagnoses of Ipsilateral Intraductal, Invasive, and Widely Metastatic Carcinoma: A Case Report and Review of the Disease in Males.
    Int J Surg Pathol Volume: 25 Page(s): 536 - 542
    09/01/2017 Authors: Viswanathan K; McMillen B; Cheng E; D'Alfonso T; Patel A; Hoda SA
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