Jan Willem Jansen

, MD

Assistant Professor
Pathology and Molecular Medicine

Division: Anatomical Pathology

Consultant Anatomical Pathologist, HRLMP
Pediatric Surgical Pathology

McMaster University
2N18 Health Sciences Centre
905-521-2100 ext 73645
Fax: 905-577-0198
jansenj@hhsc.ca

Education and Professional Standing

• Academic Certificate to Pratice Pathology at McMaster University, 2008
• SRC Pathology, Dutch Medical Specialists Registration Board, 1984
• Pathology Resident, University of Amsterdam (The Netherlands) 1984
• Aspiration Cytology, Karolinska Hospitalet (Sweden) 1981
• Family Medicine, Vrije Universiteit (The Netherlands) 1978
• MD, Vrije Universiteit (The Netherlands) 1976

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Interests

Clinical and Academic Focus

As a pathologist, Dr. Jansen teaches and provides service through the Hamilton Regional Laboratory Medicine Program. He is also actively involved in the Undergraduate (MD) and Postgraduate Medicine Educational Programs.

Graduated and licensed as anatomical pathologist in the Netherlands, as a faculty staff member of the Academic Medical Centre of the University of Amsterdam, Dr. Jansen was actively involved in teaching small groups of medical students and pathology residents. He was mainly involved in cytopathology and established a cytology aspiration service for the Centre. After moving to a large regional hospital north of the capital, as a consultant pathologist he subspecialized in gynaecological and perinatal pathology and he remained active in teaching pathology as well as other residents as part of the exchange program with the Vrije (Independent) University, Amsterdam. After he established a pathology department in a nearby regional hospital he was head of this department for nine years. He moved to Canada and McMaster in 2008.

Research Focus

Dr. Jansen's fields of interest are perinatal pathology and pediatric tumor pathology. He is also interested in clinical research involving placental pathologyin particular decidual pathology and decidual lymphocytic activity. Teaching is very important to him as a means of sharing his professional experience in all its forms with his future collegues. He is currently collaborating with Dr. Jacqueline Bourgeois and Dr. Jorge Arredondo on a clinical research placenta study. 

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Team Members

Dr. Jorge L. Arredondo, Dr. Jacqueline Bourgeois

Pathologist Assistants

Janice Kariatsumari, Scott Phillips, Vasco Georgievski

Selected Publications

• Piek JMJ, van Diest Paul J, JansenJW. “Dysplastic changes in prophylactically removed Fallopian tubes of women predisposed to developing ovarian cancer” Journal of Pathology 195: 451–456 (2001)
• Thunnissen FBJM, Peterse JL, van Pel R, Jansen JW, Laddé BE, Arends JW, Volovics A. “Which Cytological Criteria are the Most Discriminative to Distinguish Carcinoma, Lymphoma and Soft-Tissue Sarcoma? A Probabilistic Approach.” Diagn Cytopathol 17-5, 333–338 (1997)
• Rijbroek A, Moll FL, van Dijk HA, Meijer R, Jansen JW. “Inflammation of the Abdominal Aortic Aneurysm Wall”. European Journal of Vascular Surgury 8, 41-45 (1994)
• Thunnissen FBJM, Peterse JL, van Pel R, Jansen JW, Laddé BE, Arends JW, Volovics A. “Reliability of fine needle aspiration cytology for distinguishing between carcinoma, lymphoma and sarcoma; the influence of clinical information.” Cytopathol 4, 107–114 (1993)
• van Gulik TM, Jansen JW, Taat CW. “Kimura’s disease in the spermatic cord, an unusual site of a rare tumor”. Netherlands Journal of Surg 38-3, 93-95 (1986)