Abiye Kassa, MD, is an Assistant Professor in the Department of Pathology at George Washington University.
Abiye Kassa, MD completed a pathology residency at Addis Ababa University and worked as an Assistant Professor of Pathology at Gondar University and Debub University in Ethiopia. After immigrating to the United States, he also completed Anatomic and Clinical Pathology residency at Howard University and received Specialty Training in Surgical Pathology working as a junior faculty at the Johns Hopkins University with focus on Breast, Head & Neck, & Genitourinary pathology, as well as Melanoma, Pancreatic, GI, & Thoracic resections, and Frozen Section evaluation. Afterwards, he worked at the Quest Diagnostics Reference Lab in Chantilly, VA.
Clinical Expertise
Kassa's clinical practice focus is to provide diagnostic services in Breast Pathology, Head and Neck Pathology, Genitourinary Pathology, Gynecologic Pathology, and Thoracic Pathology.
Teaching
- Breast pathology
- Head and Neck pathology
- Genitourinary pathology
- Gynecologic pathology
- Thoracic pathology
Dongol R M, Behtaj M, Bhavsar T M, Lin P P, Kassa, A (November 20, 2025) Retroperitoneal Soft Tissue Xanthogranulomatous Pseudocyst: A Report of a Rare Case and Literature Review. Cureus 17(11): e97325. doi:10.7759/cureus.97325
Peer Reviewed Journal Articles/Abstracts
Mathews RT, Antar RM, Ali M, Kassa A, Gonzalez D, Kokoneshi K, Kwon S, and Whalen M (2025) Papillary renal neoplasm with reverse polarity: a case report and literature review.Front. Oncol. 15:1598738.doi: 10.3389/fonc.2025.1598738
Ali Ramadan, Abiye Kassa, Lekidelu Taddesse-Heath and Babak Shokrani, Plasmacytoma of the Eyelid in an HIV-Positive Patient J Opht Res Rev Rep, 2021 Volume 2(3): 1-2.
Ermias Diro, Yoseph Techane, Tedros Tefera, Yibeltal Assefa, Tadesse Kebede, Abebe Genetu, Yenew Kebede, Abiye Tesfaye, et al., Field evaluation of FD-DAT, rK39 dipstick and KATEX (urine latex agglutination) for diagnosis of visceral leishmaniasis in northwest Ethiopia, Transactions of the Royal Society of Tropical Medicine and Hygiene, 101: 908—914 (2007)
https://doi.org/10.1016/j.trstmh.2007.05.002
Gashaw Messele, Assefa Getachew, Abiye Tesfaye, Auto Amputation of the lower leg: Case Report, Journal of Ethiopian Medical Practice, 4 (1): 39-40 (2002)
Wondwossen Ergete, Abiye Tesfaye, Histopathological Findings of Postmenopausal Bleeding in Ethiopian women, Ethiopian Journal of Health Development, 15(1): 39-44 (2001). https://www.ejhd.org/index.php/ejhd/article/view/806 https://www.ejhd.org/index.php/ejhd/article/view/806
Christopher Trindade, Markku Miettinen, Shakuntala Mauzo, Dragan Maric, Martha Quezado, Abhik Ray-Chaudhury, Stephen M Hewitt, Astin Powers, Abiye T Kassa, Chyi-Chia Richard Lee, Sara Peters. (2018). The Role of CD70 in Benign and Malignant Cutaneous Skin Lesions. Laboratory Investigations, 98 (1), 211.
https://www.nature.com/articles/labinvest20186
Abiye T. Kassa, Charles Howell, Tammey Naab. (2020). Challenges in the Diagnosis of Well-Differentiated Hepatocellular Carcinoma with Abundant Steatosis and a Possible Link with Leuprolide Treatment (Poster No. 95). Archives of Pathology and Laboratory Medicine, 144 (9s1). https://doi.org/10.5858/arpa.2020-0991-AB
Abiye T. Kassa, Fareed Rajack, Ravi P. Sarma, Ahmed Ali, Lekidelu Taddesse-Heath. (2021). Undiagnosed Metastatic Carcinoma presenting as Thrombotic Thrombocytopenic Purpura (Poster No. 86). Archives of Pathology and Laboratory Medicine, 145 (9). https://doi.org/10.5858/arpa.2021-0267-AB
Books Edited
Editor in: Mesele Bezabeh, Abiye Tesfaye, Bahiru Ergicho, Mengistu Erke, Seyoum Mengistu, Alemayehu Bedane, Abiyot Desta. (2004). Lecture Notes on General
Pathology for Health Science Students. Ethiopian Public Health Training Initiative (in collaboration with the Carter Center, etc.). 5 / 7 https://www.cartercenter.org/resources/pdfs/health/ephti/library/lecture_notes/health_extension_trainees/GeneralPathology.pdf
Chapters in Books
Abiye Tesfaye (2004). Genetic Diseases. In Mesele Bezabeh, Abiye Tesfaye (Ed). Lecture Notes on General Pathology for Health Science Students, (pp. 98 – 137).
Ethiopian Public Health Training Initiative (in collaboration with the Carter Center, etc.). https://www.cartercenter.org/resources/pdfs/health/ephti/library/lecture_notes/health_extension_trainees/GeneralPathology.pdf