Dr. Margaret Collins is a Professor of Pediatrics and a pathologist board-certified in Anatomic and Pediatric Pathology with over 25 years of experience. She has extensive experience with eosinophilic gastrointestinal disorders (EGIDs) [e.g. eosinophilic esophagitis (EoE), eosinophilic gastritis (EG), and eosinophilic colitis (EC)]. As the primary diagnostic pathologist reviewing surgical pathology specimens obtained from pediatric and adult patients who request treatment at the CCED, she is uniquely positioned to make observations concerning these diseases. Patients who have eosinophilic esophagitis (EoE) and/or other eosinophilic gastrointestinal diseases (EGID) comprise most of the population whose pathology Dr. Collins reviews. Dr. Collins also provides pathology skills in basic research in relevant animal models, as well as translational research projects. She provides and/or ensures access to immunohistochemistry, electron microscopy, and other pathology services that may be required. Dr. Collins’ collaborations with clinicians and researchers in the CCED have resulted in multiple seminal observations about EoE. She has been a member of The International GI Eosinophil Research Consortia (TIGERS) since its inception and her collaborations with other TIGERS members have also resulted in numerous seminal publications.