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Keith Tomaszewicz BS

InstitutionUMass Chan Medical School
AddressUMass Chan Medical School
One Innovation Drive
Worcester MA 01605
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    InstitutionT.H. Chan School of Medicine
    DivisionAnatomic Pathology

    Collapse Biography 
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    University of Massachusetts Dartmouth, Dartmouth, MA, United StatesBSClinical Laboratory Scientist

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Cornejo KM, Hutchinson L, O'Donnell P, Meng X, Tomaszewicz K, Shalin SC, Cassarino DS, Chan MP, Quinn TR, Googe PB, Nazarian RM. Molecular Profiling of Syringocystadenocarcinoma Papilliferum Reveals RAS-Activating Mutations. Arch Pathol Lab Med. 2024 Feb 01; 148(2):215-222. PMID: 37074845.
      Citations:    Fields:    Translation:Humans
    2. Covington JD, Zong Y, Talat A, Strock C, Tomaszewicz K, Zivny J, Yang MX. Mass-Forming Gastric Heterotopia of the Rectum: A Series of 3 Cases from a Single Tertiary Health Center. Am J Case Rep. 2022 Jul 26; 23:e936631. PMID: 35881563.
      Citations:    Fields:    Translation:Humans
    3. Selove W, Hutchinson L, Makarenko V, Meng X, Tomaszewicz K, Ramanathan M, Cerny J, Nath R, Chen B, Woda B, Bledsoe JR. Impact of pretransplant mutation status on survival after allogeneic stem cell transplant for acute myeloid leukemia. EJHaem. 2021 Aug; 2(3):514-519. PMID: 35844698.
    4. Sun T, Hutchinson L, Tomaszewicz K, Caporelli ML, Meng X, McCauley K, Fischer AH, Cosar EF, Cornejo KM. Diagnostic value of a comprehensive, urothelial carcinoma-specific next-generation sequencing panel in urine cytology and bladder tumor specimens. Cancer Cytopathol. 2021 07; 129(7):537-547. PMID: 33539671.
      Citations: 1     Fields:    Translation:Humans
    5. Zhu X, Jamshed S, Zou J, Azar A, Meng X, Bathini V, Dresser K, Strock C, Yalamarti B, Yang M, Tomaszewicz K, Tjionas G, Mochel MC, Hutchinson L, Bledsoe JR. Molecular and immunophenotypic characterization of anal squamous cell carcinoma reveals distinct clinicopathologic groups associated with HPV and TP53 mutation status. Mod Pathol. 2021 05; 34(5):1017-1030. PMID: 33483624.
      Citations: 9     Fields:    Translation:Humans
    6. Cornejo KM, Cosar EF, Paner GP, Yang P, Tomaszewicz K, Meng X, Mehta V, Sirintrapun SJ, Barkan GA, Hutchinson L. Mutational Profile Using Next-Generation Sequencing May Aid in the Diagnosis and Treatment of Urachal Adenocarcinoma. Int J Surg Pathol. 2020 Feb; 28(1):51-59. PMID: 31496327.
      Citations: 4     Fields:    Translation:Humans
    7. Sakhdari A, Moghaddam PA, Ok CY, Walter O, Tomaszewicz K, Caporelli ML, Meng X, LaFemina J, Whalen G, Belkin E, Zivny J, Wassef W, Woda BA, Hutchinson LM, Cosar EF. Somatic molecular analysis augments cytologic evaluation of pancreatic cyst fluids as a diagnostic tool. Oncotarget. 2019 Jun 18; 10(40):4026-4037. PMID: 31258847.
      Citations: 4     Fields:    
    8. Zhu X, Salhab M, Tomaszewicz K, Meng X, Mathew C, Bathini V, Switzer B, Walter O, Cosar EF, Wang X, Lambert LA, Hutchinson LM. Heterogeneous mutational profile and prognosis conferred by TP53 mutations in appendiceal mucinous neoplasms. Hum Pathol. 2019 03; 85:260-269. PMID: 30458197.
      Citations: 3     Fields:    Translation:Humans
    9. Zhu S, Ward BM, Yu J, Matthew-Onabanjo AN, Janusis J, Hsieh CC, Tomaszewicz K, Hutchinson L, Zhu LJ, Kandil D, Shaw LM. IRS2 mutations linked to invasion in pleomorphic invasive lobular carcinoma. JCI Insight. 2018 04 19; 3(8). PMID: 29669935.
      Citations: 11     Fields:    Translation:Humans
    10. Liu Q, Cornejo KM, Cheng L, Hutchinson L, Wang M, Zhang S, Tomaszewicz K, Cosar EF, Woda BA, Jiang Z. Next-Generation Sequencing to Detect Deletion of RB1 and ERBB4 Genes in Chromophobe Renal Cell Carcinoma: A Potential Role in Distinguishing Chromophobe Renal Cell Carcinoma from Renal Oncocytoma. Am J Pathol. 2018 04; 188(4):846-852. PMID: 29353061.
      Citations: 6     Fields:    Translation:Humans
    11. Ahmadi Moghaddam P, Cornejo KM, Hutchinson L, Tomaszewicz K, Dresser K, Deng A, O'Donnell P. Complete Spontaneous Regression of Merkel Cell Carcinoma After Biopsy: A Case Report and Review of the Literature. Am J Dermatopathol. 2016 Nov; 38(11):e154-e158. PMID: 27759689.
      Citations: 11     Fields:    Translation:HumansCells
    12. Magotra M, Sakhdari A, Lee PJ, Tomaszewicz K, Dresser K, Hutchinson LM, Woda BA, Chen BJ. Immunohistochemical loss of 5-hydroxymethylcytosine expression in acute myeloid leukaemia: relationship to somatic gene mutations affecting epigenetic pathways. Histopathology. 2016 Dec; 69(6):1055-1065. PMID: 27458708.
      Citations: 5     Fields:    Translation:Humans
    13. Liu Q, Tomaszewicz K, Hutchinson L, Hornick JL, Woda B, Yu H. Somatic mutations in histiocytic sarcoma identified by next generation sequencing. Virchows Arch. 2016 Aug; 469(2):233-41. PMID: 27259537.
      Citations: 22     Fields:    Translation:Humans
    14. Kamionek M, Ahmadi Moghaddam P, Sakhdari A, Kovach AE, Welch M, Meng X, Dresser K, Tomaszewicz K, Cosar EF, Mark EJ, Fraire AE, Hutchinson L. Mutually exclusive extracellular signal-regulated kinase pathway mutations are present in different stages of multi-focal pulmonary Langerhans cell histiocytosis supporting clonal nature of the disease. Histopathology. 2016 Sep; 69(3):499-509. PMID: 26915300.
      Citations: 17     Fields:    Translation:HumansCells
    15. Cornejo KM, Deng A, Wu H, Cosar EF, Khan A, St Cyr M, Tomaszewicz K, Dresser K, O'Donnell P, Hutchinson L. The utility of MYC and FLT4 in the diagnosis and treatment of postradiation atypical vascular lesion and angiosarcoma of the breast. Hum Pathol. 2015 Jun; 46(6):868-75. PMID: 25864386.
      Citations: 17     Fields:    Translation:Humans
    16. Cornejo KM, Hutchinson L, Deng A, Tomaszewicz K, Welch M, Lyle S, Dresser K, Cosar EF. BRAF/KRAS gene sequencing of sebaceous neoplasms after mismatch repair protein analysis. Hum Pathol. 2014 Jun; 45(6):1213-20. PMID: 24767862.
      Citations: 3     Fields:    Translation:HumansCells
    17. Cornejo KM, Hutchinson L, Cosar EF, Smith T, Tomaszewicz K, Dresser K, Deng A. Is it a primary or metastatic melanocytic neoplasm of the central nervous system?: A molecular based approach. Pathol Int. 2013 Nov; 63(11):559-64. PMID: 24274719.
      Citations: 3     Fields:    Translation:HumansCells
    18. Parnian Ahmadi Moghaddam MD, Keith Tomaszewicz BS (Molecular Specialist), Karen Dresser BS, Lloyd Hutchinson Ph.D, April Deng MD Ph.d, Patrick O’Donnell DO. Poster board # 324. The American Society of Dermatopathology Annual Meeting, Washington DC, October 10-13th, 2013. . Complete spontaneous regression of Merkel cell carcinoma after biopsy: A case report. 2013.
    19. Shen Y, Irons M, Miller DT, Cheung SW, Lip V, Sheng X, Tomaszewicz K, Shao H, Fang H, Tang HS, Irons M, Walsh CA, Platt O, Gusella JF, Wu BL. Development of a focused oligonucleotide-array comparative genomic hybridization chip for clinical diagnosis of genomic imbalance. Clin Chem. 2007 Dec; 53(12):2051-9. PMID: 17901113.
      Citations: 15     Fields:    Translation:Humans
    20. Tomaszewicz K, Kang P, Wu BL. Detection of homozygous and heterozygous SMN deletions of spinal muscular atrophy in a single assay with multiplex ligation-dependent probe amplification. Beijing Da Xue Xue Bao Yi Xue Ban. 2005 Feb 18; 37(1):55-7. PMID: 15719043.
      Citations: 3     Fields:    Translation:Humans
    21. 1. Wei Xing MD, PhD1, 2. Xiuling Meng1, 3. Yiqin Xiong1, 4. Keith Tomaszewicz B.S, MT(ASCP)1, 5. Bruce A Woda MD1, 6. Ediz F. Cosar MD1 and 7. Lloyd Hutchinson PhD1. Next Generation Sequencing (NGS) of Somatic Mutations for Residual Disease Detection of Plasma. Cell Neoplasms in Instances of a PCR Negative Immunoglobulin Gene Rearrangement Assays. (2016 United States & Canadian Academy of Pathology Annual Meeting).
    22. McEnery-Stonelake M, Deng A, Tomaszewicz K, Welch M, Hutchinson L. . Diagnosis of Melanocytic Lesions Using Molecular Techniques. 2010 MA American College of Physicians Annual Scientific Meeting, Waltham MA and 8th Annual AMA Medical Student Section and Resident and Fellow Section Research Symposium, San Diego CA.
    23. Rosenblum F, Tomaszewicz K, Cosar EF, Hutchinson L, Fischer A. . Alcohol-fixed Rapid Cell block Cytology specimens provide an Effective Alternative to Formalin-Fixed Tissue for Real-time PCR assays in Lung Adenocarcinoma. 2012. United States and Canadian Academy of Pathology Annual Meeting, Baltimore, MD (03/02/13).
    24. Cornejo, Kristine, Hutchinson L, Tomaszewicz K, Welch M, Deng A, Cosar E. Sebaceous tumors with loss of mismatch repair protein expression by immunohistochemistry and BRAF mutational analysis. 2011. 48th Annual Meeting of The American Society of Dermatopathology (ASDP), Seattle WA (10/20/11).
    25. Ok C-Y, Walter O, Hutchinson L, Belkin E, Tomaszewicz K, Wassef W, Woda B, Cosar E. . KRAS mutation analysis is a good adjunct to cytologic evaluation of pancreatic cyst fluids. 2011 Annual Meeting of American Molecular Pathology. Poster ST66, Solid Tumors category (11/16/11).
    26. Kamionek M, Hutchinson L, Tomaszewicz K, Cosar E. Intrathoracic desmoid tumor: A case report with mutation analysis of the CTNNB1 gene. Poster at the 2011 Biennial Meeting of the Pulmonary Pathology Society (PPS), Memorial Sloan Kettering Cancer Center.
    27. Ok CY, Welch M, Tomaszewicz K, Hutchinson L, Cosar EF. . KRAS mutation in lipomas, atypical lipomatous tumors/well-differentiated liposarcomas (ATL) and dedifferentiated liposarcoma (DDLS). 2011. United States and Canadian Academy of Pathology Annual Meeting, Vancouver BC (01/14/12).
    28. Kristine M. Cornejo MD, Lloyd Hutchinson PhD, Ediz F. Cosar MD, Ashraf Khan MD, Keith Tomaszewicz MT (ASCP), Kathleen McCauley CG (ASCP), Hong Wu MD PhD, Karen Dresser BS HT (ASCP), Patrick O’Donnell DO, April Deng MD PhD. MYC and FLT4 Expression in Post-Radiation Atypical Vascular Lesion (AVL) and Angiosarcoma (AS) of the Breast. . MYC and FLT4 Expression in Post-Radiation Atypical Vascular Lesion (AVL) and Angiosarcoma (AS) of the Breast.
    29. Parnian Ahmadi Moghaddam MD, Keith Tomaszewicz BS (Molecular Specialist), Karen Dresser BS, LIoyd Hutchinson Ph.D, April Deng MD Ph.D. . Comparison of c-KIT and S-100 IHC staining patterns in vulvar malignant melanoma. 2012.
    30. Kristine M. Cornejo MD, Lloyd Hutchinson PhD, April Deng MD, Keith Tomaszewicz BS, Matthew Welch BS, Stephen Lyle MD, Karen Dresser BS, Ediz Cosar MD. . BRAF/KRAS Gene Sequencing of Sebaceous Neoplams Following Mismatch Repair Protein Analysis. 2013.
    31. Hutchinson L, Paner GP, Tomaszewicz K, MehtaV, Sirintrapun SJ, Barkan GA and Cosar EF. . KRAS is Mutated in a Subset of Mucinous Type Urachal Adenocarcinomas (UAC). 2011. Minisymposium presentation & Abstract at the United States and Canadian Academy of Pathology Annual Meeting, Vancouver BC (01/14/12).
    32. Michal Kamionek MD, Parnian Ahmadi Moghaddam MD, Kovach E Alexandra MD, Mathhew Welch BS, Keith Tomaszewicz BS, Lloyd Hutchinson Ph.D, Ediz Cosar MD, Euguine Kark MD, Armando Fraire. BRAF Mutation Analysis in Pulmonary Langerhans Cell Histiocytosis. A case study of 26 cases. 2013.
    33. Parnian Ahmadi Moghaddam MD , Keith Tomaszewicz BS, Lloyd Hutchinson Ph.d, April Deng MD, Karen Dresser BS. . Abstract # 292356, oral presentation; Kit Mutation in Vulvar malignant melanoma correlates with intense uniform cd117 immunohistochemical staining? 50th Annual meeting of the American Society of Dermatopathology, 10/11/2013.
    34. Mariko Yasuda MD, Keith Tomaszewicz BS, Marimeg Clairwood MD, Mary E Maloney MD, April Deng MD, Patrick O’Donnell DO. Varicell-Zoster Virus Infection with Granulomatous Inflammation; Poster. The American Society of Dermatopathology Annual Meeting, Washington DC, October 10-13th, 2013.
    35. Kamionek M, Welch M, Tomaszewicz K, Hutchinson L, Cosar EF, Dresser K and Fraire AE. . .BRAF Mutation Analysis in Pulmonary Langerhans Cell Histiocytosis. 2011. Minisymposium presentation & Abstract at the United States and Canadian Academy of Pathology Annual Meeting, Vancouver BC (01/14/12).
    36. Frida Rosenblum M.D1, 2. Keith Tomaszewicz B.S (Molecular Specialist)1, 3. Maryann St. Cyr B.S1, 4. Andrew Fischer M.D.1, 5. Ediz F. Cosar M.D.1, 6. Elizabeth M. Kurian M.D.1 and 7. Lloyd Hutchinson Ph.D. . DNA qualitative and quantitative comparison of alcohol fixed cytology versus formalin fixed tissue for PNA clamp real-time PCR detection of KRAS, EGFR and BRAF. United States and Canadian Academy of Pathology Annual Meeting, Baltimore, MD. (3/2/2013).
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