April A. Ewton, MD

Associate Professor of Clinical Pathology and Genomic Medicine, Academic Institute
Houston Methodist
Weill Cornell Medical College

Hematopathology Fellowship


Dr. Ewton obtained her MD degree from the Baylor College of Medicine in Houston, Texas, in 1994. She then completed a pathology residency at Baylor followed by a surgical pathology fellowship at The University of Texas MD Anderson Cancer Center, and a hematopathology fellowship at the University of New Mexico in Albuquerque. Dr. Ewton joined the Department of Pathology and Genomic Medicine at Houston Methodist in 2007. In addition to her clinical responsibilities, she is very active in resident education and is editor-in-chief of The Laboratory Report, the quarterly newsletter distributed by the department.

Description of Research

Dr. Ewton, Associate Medical Director of Hematopathology, is a general surgical pathologist with subspecialty certification in hematopathology. Her research interests include flow cytometric immunophenotyping of lymphomas.

Education & Training

MD, Baylor College of Medicine
Clinical Fellowship, University of New Mexico Medical School

Insidious Mass Within a Sinus
Dhorepatil, A, Modi, V, Kassi, M, Chamsi-Pasha, MAR, Ewton, A, Allen, D & Mallah, MHA 2023, , Methodist DeBakey cardiovascular journal, vol. 19, no. 1, pp. 92-95. https://doi.org/10.14797/mdcvj.1316

Peripheral T cell lymphoma, NOS with aberrant aß and ?d T cell receptor expression in a post-heart transplant patient
Liu, S, Ewton, A, Miller, TN, Zieske, AW, Thrall, MJ, Olsen, RJ, Zu, Y & Hao, S 2020, , Journal of Hematopathology, vol. 13, no. 2, pp. 109-116. https://doi.org/10.1007/s12308-020-00393-w

Reactive NK cell lymphocytosis with atypical immunophenotype in a chronic HIV-infected patient
Liu, S, Rice, L & Ewton, A 2021, , Cytometry Part B - Clinical Cytometry, vol. 100, no. 2, pp. 240-242. https://doi.org/10.1002/cyto.b.21969

Spontaneous remission in diffuse large cell lymphoma: A case report
Snijder, J, Mihyawi, N, Frolov, A, Ewton, AA & Rivero, G 2019, , Journal of Medical Case Reports, vol. 13, no. 1, 28. https://doi.org/10.1186/s13256-018-1937-z

A new case of adult Acute Myeloid Leukemia with t(3;3)(p24;q26)
Yuan, B, Smith, J, Ewton, AA, Pingali, SR, Zieske, AW & Breman, A 2019, , Atlas of Genetics and Cytogenetics in Oncology and Haematology, vol. 23, no. 7, pp. 204-206. https://doi.org/10.4267/2042/70473

Flow Cytometry
Ewton, AA 2018, . in I Ramzy, D Mody & R Laucirica (eds), Clinical Cytopathology: Fundamental Principles and Practice. 3rd edn, McGraw Hill Education, pp. 745-754.

Lymph Nodes
Ewton, AA & Miller, TN 2018, . in I Ramzy, D Mody & R Laucirica (eds), Clinical Cytopathology: Fundamental Principles and Practice. 3rd edn, McGraw Hill Education, pp. 161-200.

Essential Thrombocythemia
Ewton, AA & Donohue, R 2018, . in C-C Chang & R Ohgami (eds), Precision Molecular Pathology of Myeloid Neoplasms. 1st edn, vol. 12, Springer, Switzerland, pp. 141-154. https://doi.org/10.1007/978-3-319-62146-3_7

Pancreas metastases from papillary thyroid carcinoma: A review of the literature
Davidson, M, Olsen, RJ, Ewton, AA & Robbins, RJ 2017, , Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists, vol. 23, no. 12, pp. 1425-1429. https://doi.org/10.4158/EP-2017-0001

Hepatosplenic T-cell lymphoma
Raza, A & Ewton, A 2014, , Blood, vol. 124, no. 5, pp. 677. https://doi.org/10.1182/blood-2014-05-575449

Systemic polyclonal immunoblastic proliferation: A diagnostic review and differential diagnosis
Raza, A, Cohen, D, Amin, S, Zieske, A & Ewton, A 2014, , Journal of Hematopathology, vol. 7, no. 2, pp. 85-90. https://doi.org/10.1007/s12308-014-0207-2

Selective pathology fellowships: Diverse, innovative, and valuable subspecialty training
Iezzoni, JC, Ewton, A, Chévez-Barrios, P, Moore, S, Thorsen, LM & Naritoku, WY 2014, , Archives of Pathology and Laboratory Medicine, vol. 138, no. 4, pp. 518-525. https://doi.org/10.5858/arpa.2013-0454-SA

Differentiating between Burkitt lymphoma and CD10+ diffuse large B-cell lymphoma: The role of commonly used flow cytometry cell markers and the application of a multiparameter scoring system
McGowan, P, Nelles, N, Wimmer, J, Williams, D, Wen, J, Li, M, Ewton, AA, Curry, C, Zu, Y, Sheehan, A & Chang, CC 2012, , American Journal of Clinical Pathology, vol. 137, no. 4, pp. 665-670. https://doi.org/10.1309/AJCP3FEPX5BEEKGX

Mast cell burden and reticulin fibrosis in the myeloproliferative neoplasms: A computer-assisted image analysis study
Ahmed, A, Powers, MP, Youker, KA, Rice, L, Ewton, A, Dunphy, CH & Chang, CC 2009, , Pathology Research and Practice, vol. 205, no. 9, pp. 634-638. https://doi.org/10.1016/j.prp.2009.04.003

Prognostic impact of C-REL expression in diffuse large B-cell lymphoma
Curry, CV, Ewton, AA, Olsen, RJ, Logan, BR, Preti, HA, Liu, YC, Perkins, SL & Chang, CC 2009, , Journal of Hematopathology, vol. 2, no. 1, pp. 20-26. https://doi.org/10.1007/s12308-009-0021-4

The role of ß-catenin in chronic myeloproliferative disorders
Jauregui, MP, Sanchez, SR, Ewton, AA, Rice, L, Perkins, SL, Dunphy, CH & Chang, CC 2008, , Human Pathology, vol. 39, no. 10, pp. 1454-1458. https://doi.org/10.1016/j.humpath.2008.02.007

p38 mitogen-activated protein kinase has different degrees of activation in myeloproliferative disorders and myelodysplastic syndromes
Shahjahan, M, Dunphy, CH, Ewton, A, Zu, Y, Monzon, FA, Rice, L & Chang, CC 2008, , American Journal of Clinical Pathology, vol. 130, no. 4, pp. 635-641. https://doi.org/10.1309/2450EGK3V0XK8D9D

The implication of identifying JAK2V617F in myeloproliferative neoplasms and myelodysplastic syndromes with bone marrow fibrosis
Olsen, RJ, Dunphy, CH, OMalley, DP, Rice, L, Ewton, AA & Chang, CC 2008, , Journal of Hematopathology, vol. 1, no. 2, pp. 111-117. https://doi.org/10.1007/s12308-008-0014-8

Essential thrombocythemia: A review of diagnostic and pathologic features
Sanchez, S & Ewton, AA 2006, , Archives of Pathology and Laboratory Medicine, vol. 130, no. 8, pp. 1144-1150.

Hodgkin's disease presenting with osseous involvement
Chandra, D, Ewton, AA & Baker, K 2006, , American Journal of Hematology, vol. 81, no. 7, pp. 550-551. https://doi.org/10.1002/ajh.20650