Dina El Demellawy

Investigator, CHEO Research Institute

Dr. Dina El Demellawy is a Pediatric Pathologist in Children’s Hospital of Eastern Ontario and an Associate Professor in the University of Ottawa. She had completed her Anatomical Pathology residency training at the University of Toronto and her Pediatric Pathology fellowship training at the University of Pittsburgh Medical Centre. Dr. El Demellawy is appointed at The Children’s Hospital of Eastern Ontario Research Institute as a clinical investigator. Her main clinical and academic interests are Perinatal, Pediatric and Bone Pathology. She had contributed to a few book chapters, has over 80 published articles in peer reviewed journals, and over 70 abstracts presentations and publications in national and international meetings. She had over 20 successful grants including CHIR, PSI and Translational Research Grants, among others. She is also actively engaged in teaching of undergraduate and postgraduate students. She is the acting chair of Pathology and Laboratory Medicine Committee (PALM). She had held several positions including Director of Immunohistochemistry at William Osler Health Centre in Toronto, Director of Histology Laboratory at Health Sciences North in Sudbury.

Related News

Research Projects

  1. Histopathology and post-operative complications in pediatric ulcerative colitis


    Our study found that Paneth cell metaplasia in the rectum length may lead to decreased odds of post-operative complications following the J-pouch procedure, while the remaining histological parameters did not show evidence of predicting post-operative complications. This knowledge is clinically important and relevant for pathologists and gastroenterologists who may consider using the Geboes et al. score or PROTECT score to identify histopathological parameters that could predict the presence of post-operative complications. Consequently, they can communicate relevant findings to surgeons during post-operative treatment planning.

  2. Evaluating the Prognostic Implication of the Collins Histology Scoring System in a Pediatric Eastern Ontario Population With Eosinophilic Esophagitis


  3. Placenta pathology in recipient versus donor oocyte derivation for in vitro fertilization in a setting of hypertensive disorders of pregnancy and IUGR


    Multiple gestation may be associated with decreased MVM and total lesions.

  4. Abnormal placental pathological findings and adverse clinical outcomes of oocyte donation


    Placental pathology reflecting dysregulated immune processes and vasculopathy is associated with oocyte donation.

  5. Diagnostic Value of Mid-esophageal Biopsies in Pediatric Patients With Eosinophilic Esophagitis


    Future studies need to be conducted before conclusive recommendations supporting the use of mid-esophageal biopsies can be made.