Assoc. Dr. Hasret Ayyıldız Civan is a pediatric gastroenterologist specializing in childhood diseases, oral and esophageal diseases, stomach and small intestinal diseases, food allergies, eating disorders, celiac disease, acute and chronic gastritis, constipation, chronic diarrhea, and large intestinal diseases. She completed her medical education at Hacettepe University Faculty of Medicine before undertaking her Pediatrics residency training at Istanbul Dr. Lütfi Kırdar Kartal Training and Research Hospital and her fellowship training in Pediatric Gastroenterology, Hepatology and Nutrition at Istanbul University Cerrahpaşa Faculty of Medicine. She practiced as a Pediatric Gastroenterology Specialist at Bakırköy Dr. Sadi Konuk Training and Research Hospital for nearly a decade before joining Biruni University Faculty of Medicine Hospital in 2026. She placed first in the Turkish Society of Pediatric Gastroenterology, Hepatology and Nutrition Board Examination in 2016. Her research has focused extensively on celiac disease, congenital enteropathies, and pediatric nutrition, resulting in a substantial body of international peer-reviewed publications and several book chapters. She is a member of the Turkish Society of Pediatric Gastroenterology, Hepatology and Nutrition and ESPGHAN (European Society for Pediatric Gastroenterology, Hepatology and Nutrition).
Book Chapters
- Civan HA. Nutrition and Diet in Children with Diabetes Mellitus. In: Okur İ, editor. Nutrition and Dietary Management Specific to Pediatric Diseases. 1st Edition. Ankara: Akademisyen Publishing House; 2019. p.337-344
- Civan HA. Nutrition in Functional Gastrointestinal Disorders of Infancy. In: Özkaya O, editor. Nutrition in Children from A to Z. 1st Edition. Ankara: Akademisyen Publishing House; 2020. p.177-180
- Ayyıldız Civan H, Ertekin V. Nutrition in Pediatric Intensive Care Patients. In: Çullu Çokuğraş F, editor. Nutrition in Chronic Diseases in Children. 1st Edition. Ankara: Türkiye Klinikleri; 2021. p.70-8
- Ayyıldız Civan H, Ertekin V. Rumination Syndrome in Infancy. In: Çullu Çokuğraş F, editor. Functional Gastrointestinal Disorders of Infancy – With Cases. 1st Edition. Istanbul: Clinic Pediatri-Medikal Bülten; 2021. p.63-70
Courses and Training Programs Attended
- Good Clinical Practice (GCP) Training Meeting, January 10, 2018 / Istanbul
Symposia and Congresses Attended
- 10th National Congress of Pediatric Gastroenterology, Hepatology and Nutrition, April 30 – May 3, 2014 / Malatya
- Nutrition Autumn School, November 20-21, 2015 / Bodrum
- 51st Turkish Pediatric Association Congress, May 17-21, 2015 / Izmir
- Pediatric Gastroenterology Update Meeting, April 10-11, 2015 / Adana
- ESPGHAN 49th Annual Meeting, May 25-28, 2016 / Greece
- 52nd Turkish Pediatric Congress, May 16-19 / Antalya
- Liver Diseases and Nutrition Autumn School, November 25-26, 2016 / Antalya
- 11th National Congress of Pediatric Gastroenterology, Hepatology and Nutrition, May 4-7, 2016 / Samsun
- ESPGHAN 50th Annual Meeting, May 10-13, 2017 / Czech Republic
- Pediatric Gastroenterology, Hepatology and Nutrition Update Meeting, June 1-4, 2017 / Bodrum
- Pediatric Inflammatory Bowel Disease School in Light of Current ECCO Guidelines, April 28-29, 2017 / Istanbul
- 3rd Young Pediatricians Congress, December 1-4 / Istanbul
- ESPGHAN 51st Annual Meeting, May 9-12, 2018 / Switzerland
- Symposium on Esophageal Motility Disorders in Children, May 25-27, 2018 / Ankara
- 12th National Congress of Pediatric Gastroenterology, Hepatology and Nutrition, April 18-21, 2018 / Çeşme
- Pediatric Liver Transplantation Course, February 22-23, 2018 / Istanbul
- 4th Young Pediatricians Congress, November 30 – December 2, 2018 / Istanbul
- 5th Young Pediatricians Congress, November 29 – December 1, 2019 / Istanbul
- 6th Young Pediatricians Congress, March 5-7, 2021 / Istanbul
- 13th National Congress of Pediatric Gastroenterology, Hepatology and Nutrition, May 19-22, 2021
Education
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Fellowship Training, Department of Pediatric Gastroenterology, Hepatology and Nutrition
Istanbul University Cerrahpaşa Faculty of Medicine
2014–2017
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Residency Training, Pediatrics
Istanbul Dr. Lütfi Kırdar Kartal Training and Research Hospital
2006–2011
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Medical Education
Hacettepe University Faculty of Medicine
1999–2006
Academic & Administrative Roles
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Pediatric Gastroenterology Specialist
Biruni University Faculty of Medicine Hospital
2026–Present
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Pediatric Gastroenterology Specialist
Bakırköy Dr. Sadi Konuk Training and Research Hospital
2017–2026
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Pediatric Gastroenterology Fellow
Istanbul University Cerrahpaşa Faculty of Medicine
2014–2017
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Pediatrics Resident
Istanbul Dr. Lütfi Kırdar Kartal Training and Research Hospital
2006–2011
- Turkish Society of Pediatric Gastroenterology, Hepatology and Nutrition
- ESPGHAN (European Society for Pediatric Gastroenterology, Hepatology and Nutrition)
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Congenital Diarrhea and Cholestatic Liver Disease: Phenotypic Spectrum Associated with MYO5B Mutations
Journal of Clinical Medicine · 2021 -
AP1S1 missense mutations cause a congenital enteropathy via an epithelial barrier defect
Human Genetics · 2020 -
Three Novel EPCAM Variants Causing Tufting Enteropathy in Three Families
Children · 2021 -
The frequency of and factors affecting functional gastrointestinal disorders in infants that presented to tertiary care hospitals
European Journal of Pediatrics · 2021 -
Percutaneous Endoscopic Gastrostomy Feeding in Children with Cerebral Palsy
Neuropediatrics · 2021 -
Evaluation of psychiatric symptoms of children with Celiac Disease and their relationship with gluten-free diet and maternal factors
Clinical Pediatrics · 2021 -
Vitamin B12 Status in Children with Helicobacter pylori Gastritis
Medical Journal of Bakirköy · 2020 -
Molecular heterogeneity in cystic fibrosis
Journal of Pediatric Genetics · 2020 -
Screening of celiac disease in children and adolescents with type 1 diabetes mellitus
Journal of Clinical Medicine of Kazakhstan · 2020 -
Impact of compliance to a gluten-free diet on vitamin and trace element deficiencies in celiac patients
International Endocrinology Journal (Ukraine) · 2020 -
Effect of vitamin D and B12 levels on hepatosteatosis in overweight and obese children
International Journal of Endocrinology · 2020 -
Wilkie syndrome presenting with acute abdomen: a case report
Turk Pediatri Ars. · 2018 -
Corrosive Esophagitis with Benzalkonium Chloride in a Two Days Old Neonate
Pediatric Gastroenterology, Hepatology, and Nutrition · 2016 -
Evaluation of Etiologic and Clinical Symptoms in Intrahepatic Bile Duct Diseases: A Single Centre Study
Medical Journal of Bakirköy · 2019 -
Olanzapine-induced atypical neuroleptic malignant syndrome in an adolescent man with anorexia nervosa
Eat Weight Disord. · 2016 -
Functional constipation frequency in children diagnosed with autism spectrum disorder
Konselor · 2021 -
Neurological and Psychosocial Evaluation of Pediatric Celiac Patients: Diet Adherence-Case Control Study
Bakırköy Tıp Dergisi · 2019 -
Vitamin and mineral levels in children with autism spectrum disorder
COUNS-EDU: The International Journal of Counseling and Education · 2020 -
Effectiveness of hepatitis B hyperimmunoglobulin and vaccine in preventing perinatal transmission in children born from a mother with chronic B hepatitis
Clinical Pediatrics · 2021 -
Pediatric upper gastrointestinal bleeding in children: etiology and treatment approaches
2020 -
The effectiveness of chest radiography in the diagnosis of pediatric COVID-19
Journal of Clinical Medicine of Kazakhstan -
Clinical and Laboratory Characteristics of Patients with Food Allergy: Single-Center Experience
Sisli Etfal Hastan Tip Bul. · 2019 -
Necrotizing fasciitis of the perineum
World J Pediatr. · 2013 -
Evaluation of malnutrition development risk in hospitalized children
Nutrition · 2018 -
Allergic myocardial infarction in childhood: Kounis syndrome
Eur J Pediatr. · 2010 -
Kounis syndrome: first series in Turkish patients
Anadolu Kardiyol Derg. · 2009 -
Broken heart syndrome in a 17-year-old girl
Eur J Pediatr. · 2009 -
Kounis syndrome secondary to amoxicillin/clavulanic acid use in a child
Int J Cardiol. · 2009
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First Place, Board Examination
Turkish Society of Pediatric Gastroenterology, Hepatology and Nutrition
2016