Department of Pathology

O. Hans Iwenofu, MD

Associate Professor

O. Hans Iwenofu, MD




Email Dr. Iwenofu

Office Location:

E418A Doan Hall

Mailing Address:

E418A Doan Hall
410 W. 10th Ave
Columbus, OH 43210


O. Hans Iwenofu, MD is an Associate Professor-Clinical in the Anatomic Pathology Branch and a faculty member of the Division of Bone and Soft Tissue. Dr. Iwenofu earned his M.B., B.S. at the College of Medicine, University of Nigeria in Enugu, Nigeria. He completed his residency in Anatomic and Clinical Pathology at the University of Oklahoma Health Sciences Center in Oklahoma City. Dr. Iwenofu then went on to complete a fellowship in Oncologic Surgical Pathology at Roswell Park Cancer Institute in Buffalo, New York followed by a fellowship in Soft Tissue/Bone Pathology at the University of Pennsylvania Health System in Philadelphia.

Board Certifications

Anatomic & Clinical Pathology Certification, American Board of Pathology

Academic and Medical Appointments

Associate Professor-Clinical, Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio

Education and Training

2006-2007 Fellow, Soft Tissue/Bone Pathology, University of Pennsylvania Health System, Philadelphia, Pennsylvania

2005-2006 Fellow, Oncologic Surgical Pathology, Roswell Park Cancer Institute, Buffalo, New York

2001-2005 Resident, Anatomic & Clinical Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK

1987-1995 M.B., B.S., College of Medicine, University of Nigeria, Enugu, Nigeria

Selected Publications

Search in PubMed

Book Chapters:


  • Yu PY, Balkhi MY, Ladner KJ, Alder H, Yu L, Mo X, Kraybill W, Guttridge DC, Iwenofu OH. A Selective Screening Platform Reveals a Unique Global Expression Patterns of microRNAs in a Cohort of Human Soft Tissue Sarcomas. Lab Invest. 2016. Feb 15.doi:10.1038/labinvest.2015.168.
  • Leon ME, Santosh N, Agrawal A, Teknos TN, Ozer E, Iwenofu OH. Diagnostic Challenges in the Fine Needle Aspiration Biopsy of Chronic Sclerosing Sialadenitis (Kuttner Tumor) in the Context of Head and Neck Malignancy: A Series of 4 Cases .Head Neck Pathol.2016 Feb 24.
  • Price RL, Harkins L, E. Antonio Chiocca, Zhang P, Kurt H and Iwenofu OH. Human Cytomegalovirus is present in Alveolar Soft Part Sarcoma. Appl Immunohistochem Mol Morph.201 Mar 17.
  • Lin C, Iwenofu OH, Kang SY. Parapharyngeal Mass. JAMA Otolayngol Head Neck Surg. 2016 Mar 17. Doi:10/1001/jamaoto.2015.3697
  • Smith SM, Iwenofu OH. (Invited Monograph) A Synopsis of Recent Updates to the 2013 World Health Organization Classification of Soft tissue Tumors: What the Surgeons Needs to Know.” Curr Probl Surg Journal 2016.
  • S. Varghese and Braggio DA, Gillepsie J, Toland AE, Pollock R, Mayerson J, T Scharschmidt T, Iwenofu OH. Transforming Growth Factor-b and Connective Tissue Growth Factor Are mitogenic Output Mediators of Wnt/B-Catenin Signalling in Deep fibromatosis. Appl Immunohistochem Mol Morph.2016. Feb 18.
  • Kurt H, Arnold CA, Payne JE, Skoracki RJ, Iwenofu OH. Massive Localized Lymphedema: a clinicopathologic study of 46 patients with an enrichment for Multiplicity. Modern Pathol 2016; 29:75-82.doi:10.1038/modpathol.2015.135. Epub 2015 Nov 20.
  • Buckley K, Iwenofu OH. Limited Utility of p63 in the Sole Evaluation of Suspected Oraopharyngeal Squamous Cell Carcinoma: a Cautionary Tale! Appl Immunohistochem Mol Morphol.2016;24:e1—3.
  • Santosh N, Mayerson J, Iwenofu OH. Pseudosarcomatous Spindle Cell Proliferation with Osteoid Matrix Mimicking Osteosarcoma: A Distinct Histologic Phenotype in Giant Cell Tumor of Bone Following Denosumab Therapy Appl Immunohistochem Mol Morphol.2016;24:e18-9.
  • Santosh N, Herema NA, Mayerson JL, Iwenofu OH. Novel Clonal der(9)t(5;9)(q31;q34) Cytogenetic Translocation in a Giant Cell Tumor of Bone. Appl Immunohistochem Mol Morphol.2015;23:e17-e21.
  • Nowacki N, Roth R, Iwenofu OH. Diffuse Cytokeratin Positivity in an Intradural Paragangioma of the Lumber Vertebra: A Diagnostic Pitfall! Appl Immunohistochem Mol Morphol.2015 Sept 14
  • Smith SM, Coleman J, Bridge J, Iwenofu OH. Molecular diagnostics in soft tissue sarcomas and gastrointestinal stromal tumors. J Surg Oncol. 2015; 111:530-31. Invited review paper as part of a special a seminar entitled: “Multidisciplinary Advances in Soft Tissue Sarcomas by Journal of Surgical Oncology.
  • Smith SM, Schmitt AC, Carrau RL, Iwenofu OH. Primary Sinonasal Mucosal Melanoma with aberrant Diffuse and Strong Desmin Reactivity and Potential Diagnostic Pitfall! Head Neck Pathol 2015;9:165-71.
  • Kiyani A, Heerema Nyler A, Mayerson J, Iwenofu OH. Novel Clonal t(2;4) (q23;p14) Secondary Cytogenetic Abnormality in a Primary Myxoid Liposarcoma. Appl Immunohistochem Mol Morphol. 2015;23:538-40.