McMaster University

McMaster University

Dean Daya


Professor Emeritus (2012)
Pathology and Molecular Medicine

Division: Anatomical Pathology

Professor, Obstetrics & Gynecology

Juravinski Hospital
Hamilton Ontario
(905) 525-9140 ext 42036
Fax:  (905) 389-1698

photo of Dr Daya

Faculty Biography

Education and Professional Standing

  • Fellow, Royal College of Physicians & Surgeons of Canada
  • Fellow, American Society of Clinical Pathology
  • Fellow, American Board of Pathology
  • Masters in Hospital Administration, University of Ottawa, Canada
  • MD University of Dar-es-salaam, Tanzania
  • Consultant Pathologist, Juravinski Caner Centre, Hamilton, Ontario, Canada
  • Recipient, Distinguished Meritorious Canadian Association of Pathology
  • Recipient, Council of Resident Education in Obstetrics & Gynecology for Excellence in Resident Education


Clinical Focus

Dr Daya’s main interest is in diagnostic gynecologic and urologic pathology. He regularly discusses difficult diagnostic cases with junior faculty and residents. His emphasis on clinicopathological correlation is appreciated by both the clinical and pathology staff. 

Best practice guidelines for Oncologic Pathology Secondary Review, Cancer Care Ontario

Research Focus

Dr Daya's current focus is in the genesis of ovarian carcinoma and diagnostic criteria for early gynecological malignancy including vulva, cervix and the endometrium (including preinvasive conditions).   He collaborates locally, nationally, and internationally. 

Academic Interests

Dr. Daya’s main passion is teaching residents and junior staff.  His emphasis is how to come up “with bottom line” which has a pertinent clinical implication. He is currently involved in multi institutional study for early invasive adenocarcinoma of the cervix. Dr Daya also regularly teaches residents in obstetrics and gynecology who do a pathology/colposcopy rotation at the Juravinski Centre.

Currently involved in the new WHO (2012) Classification of gynecological malignancies.

Selected Publications

  • Tang S, Onuma K, Deb P, Wang E, Lytwyn A, Sur M, Daya D.Frequency of serous tubal intraepithelial carcinoma in various gynecological malignancies:A study of 300 consecutive cases.International Journal of Gynecologic Pathology. 2012;00:1-8.
  • Fridman E, Daya D, Srigley J, Whelan KF, Lu JP, Pinthus JH.Construction of tissue micro array from prostate needle biopsies using the vertical clustering re-arrangement technique.Prostate 2011 Feb 9
  • El Demellawy D, Saleh R, Daya D, Alowami S.Malignant giant cell tumour of the vulva. International Journal of Gynecologic Pathology 2010;29(1):93-7.
  • Misir A, Daya D, Sur M.Cotyledonoid dissecting leiomyoma of the uterus (Sternberg tumour): A clinicopathological study of six cases.Canadian Journal of Pathology 2009;1(3):9-15.
  • Ceballos K, Chapman W, Daya D, Julian J, Lytwyn A, McLachlin CM, Elit L. Reproducibility of the histological diagnosis of cervical dysplasia among pathologists from four continents.International Journal of Gynecologic Pathology 2008;27(1):101-107.
  • Ceballos K, Shaw D, Daya D.Microinvasive cervical adenocarcinoma (FIGO stage IA Tumours):Results of surgical staging and outcome analysis.Am J Surg Pathol 2006; 30(3):370-374.
  • Lytwyn A, Gafni A, Sellors JW, Goeree R, Randazzo J, Mahony JB, Daya D.Economic evaluation of hybrid capture human papillomavirus testing in women with low grade Papanicolaou smear abnormalities. Journal Of Lower Genital Tract Disease 1998;2:213-220.
  • Daya D, McCaughey WTE.Well differentiated papillary mesothelioma of the peritoneum.A clinicopathological study of 22 cases.Cancer 1990;65:100-109
  • Daya D, Scully RE.Sarcoma botryoides of the uterine cervix.Aclinicopathological study.Gynecol Oncol 1988;29:290-304.
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