Dr.
Laetitia-Marie Petit
Pediatric Gastroenterologist and Pediatric Nutritionist
Secretarial
022 719 79 29
Consultations by appointment only.
Hours
Monday
08:30 - 11:30
13:30 - 17:00
13:30 - 17:00
Wednesday
08:30 - 11:30
13:30 - 17:30
13:30 - 17:30
Thursday
08:30 - 11:30
13:30 - 17:00
13:30 - 17:00
Friday
08:30 - 11:30
13:30 - 16:00
13:30 - 16:00
Place of practice
-
Hôpital de La TourBâtiment B11
Rue de Veyrot 39
CH-1217 Meyrin
Mot du spécialiste
A pediatrist above all else, I am delighted to have the opportunity to treat children suffering from chronic gastrointestinal diseases at the Crohn’s and Colitis Center within the Hôpital de La Tour. Based on my extensive experience working in university hospitals in both Paris and Geneva, I offer diagnostic and therapeutic management for children suffering from chronic inflammatory bowel disease, digestive tract motility disorders, and chronic abdominal pain. Our aim is to offer multi-disciplinary care that takes account of the future transitional needs of young patients. The state-of-the art technology available at Hôpital de La Tour and collaboration with teams from other units makes it possible to carry out the necessary assessments to allow treatment of pediatric patients. With a particular focus and skill set in pediatric nutrition, I offer consultations for patients suffering from malnutrition as well as multidisciplinary follow-on care. In children with digestive or somatic diseases, it is especially important to monitor their growth.
Children are not just adults in miniature form and need to be viewed and listened to with that in mind, especially when they are living with a chronic gastrointestinal disorder.
Domaines de compétences
- Pediatric nutrition
- Functional testing: lactose, fructose, and lactulose breath test
- Gastrointestinal endoscopy
- Dysmotility of the digestive tract in children
Medical specialties
Languages spoken
- French
- English
- German
Professional activities
Since 2022
Pediatric Gastroenterologist
Crohn’s and Colitis Center, Hôpital de La Tour, Geneva, Switzerland
2012 - 2022
Chief Resident then Attending Physician, Gastroenterology, Hepatology, and Pediatric Nutrition Unit – Swiss Center for Liver Disease in Children
Women, Children, and Adolescents Department, Pediatric Unit, Geneva University Hospitals, Geneva, Switzerland
2009 - 2012
Chief Resident, Gastroenterology, Hepatology, and Pediatric Nutrition Unit
Hôpital Necker Enfants malades, Assistance Publique des Hôpitaux de Paris, Paris, France
2016
Visiting Professor, Gastroenterology, Hepatology, and Pediatric Nutrition Unit (Dr. C. Deslandres)
CHU Sainte Justine, Montreal, Canada
Teaching activities
2012 - 2022
Bedside clinical teaching for pre-graduate medical students
Department for Children and Adolescents, Geneva University Hospitals, Geneva, Switzerland
2012 - 2022
Clinical and theoretical teaching of pediatric residents regarding pediatric nutrition and gastroenterology
Department for Children and Adolescents, Geneva University Hospitals, Geneva, Switzerland
2012 - 2022
Teaching of pharmacists in preparation for the Inter-University Diploma in Artificial Nutrition
Department for Children and Adolescents, Geneva University Hospitals, Geneva, Switzerland
2012 - 2022
Teaching of nutrition students, University of Applied Sciences
Department for Children and Adolescents, Geneva University Hospitals, Geneva, Switzerland
2009 - 2012
Bedside clinical teaching for pre-graduate medical and nursing students
Hôpital Necker Enfants Malades, Assistance publique des Hôpitaux de Paris, Paris, France
2009 - 2012
Clinical and theoretical teaching of pediatric residents regarding pediatric nutrition and gastroenterology
Hôpital Necker Enfants Malades, Assistance publique des Hôpitaux de Paris, Paris, France
Degrees and qualifications
2015
Accreditation in Pediatric Hepatology and Gastroenterology
ISFM
2009
Doctoral Thesis in Medicine
Faculty of Medicine, Université de Paris 6, Paris, France
2009
Specialization in Pediatrics
Faculty of Medicine, Université de Paris 5, Paris, France
2009
Inter-University Diploma in Pediatric Gastroenterology, Hepatology, and Nutrition
Faculty of Medicine, Université de Paris 6, Paris, France
2011
Inter-University Diploma in Pediatric Functional Testing, Doctoral Thesis in
Faculty of Medicine, Université de Paris 6, Paris, France
Professional training
2017 - 2018
Supportive and therapeutic communication and training in therapeutic hypnosis at the University of Geneva Hospitals, clinical hypnosis practitioner
Geneva University Hospitals
Publication
2019
Doctoral Thesis in Medicine: Insuffisance intestinale et nutrition parentérale de longue durée : 217 enfants suivis en nutrition parentérale à domicile entre 2000 et 2008 : évolutions et perspectives (‘Intestinal dysfunction and long-term parenteral nutri
Paris: Université de Paris VI, 2009. – No 2009PA06S098
Book – Vademecum de Nutriton Pédiatrique, Edition Médecine et Hygiène (‘Vademecum on Pediatric Nutrition; Medicine and Hygiene Edition’, in French)
Claire Morice, Nathalie Rock, Angelika Weber, under the direction of Laetitia-Marie Petit
Book – Ma gastrostomie et moi (‘My gastrostomy and me’, in French)
Book – "Swiss recommendations on Cystic Fibrosis" - Chapter on digestive condition and on nutrition
Intestinal absorption rate in children after small intestinal transplantation
Am J Clin Nutr, vol. 97 (2013), No 5, pp. 743-749 6.504 (2012)
Weaning off prognosis factors of children on home parenteral nutrition for primary digestive disease.
JPGN 2016 Mar;62(3):462-8
Outcome of homeparenteral nutrition in 251 children over a 14-y period: report of a single center.
Am J Clin Nutr. 2016. May; 103(5):1327-36
Antibody mediated rejection after intestinal transplantation: clinical and pathological features, treatment and outcome.
Pediatr Transplant. 2017 mar:21(2)
Pathology of antibody-mediated rejection in pediatric small bowel transplantation : redefining the histological landscape of intestinal rejection.
Am J Transplantation. 2018.
A new mutation in the CTerminal end of TTC37 leading to a mild form of Syndromic diarrhea/Tricho-hepato-enteric syndrome.
Am Journal Medical Genetics 2018 vol 176(3), 727-732
E-learning training to improve pediatric parenteral nutrition practice : a pilot study in two university hospitals.
JPEN J Parenter Enteral Nutr. 2019 Dec 5. doi:10.1002/jpen.1730
Extraintestinal Manifestations of Pediatric Inflammatory Bowel Disease: Prevalence, Presentation and anti-TNF Treatment.
J Pediatr Gastroenterol Nutr. 2016 Oct
Quality of Life in Swiss Paediatric Inflammatory Bowel Disease Patients : Do Patients and Their Parents Experience Disease in the Same Way?.
J Crohns Colitis. 2016 Mar;10(3):269-76
Genetic polymorphisms associated with smoking behaviour predict the risk of surgery in patients with Crohn’s disease.
Aliment Phramco et Therap 2018.
Age at disease onset of inflammatory bowel disease is associated with later extra-intestinal manifestations and complications.
European Journal of Gastroenterology & Hepatology 2018, vol 30 (6) 598-607
Colectomy rates in ulcerative colitis are low and decreasing : 10 years follow up data from the swiss IBD cohort study.
J Crohn Colitis 2018. Vol 12(7),811-818
The relevance of vitamin and iron deficiency in patients with IBD in the Swiss IBD Cohort
Inflamm Bowel Dis. 2018
Combined pancreatic islet- lung-liver transplantation in a pediatric patient with cystic fibrosis related diabetes.
Horm Res Paediatr 2018
Preformed and “de novo” DSA are associated with T-Cell mediated rejection in pediatric liver transplantrequiring clinically indicated liver biopsy.
Pediatr Transplant. 2020 Feb;24(1):e13611. doi: 0.1111/petr.13611
Vitamin D Insufficiency Prior to Paediatric Liver Transplantation Is Associated with Early T-Cell Mediated Rejection.
Children (Basel). 2021 Jul 20;8(7):612.
Food protein-induced enterocolitis syndrome (FPIES) – a review of the literature with focus on clinical management"
"Journal of Asthma and Allergy"2017, vol 10, 197- 207
L’alimentation végétalienne de l’enfant : quels déficits surveiller ?(‘Children on vegan diets: what deficits should we monitor?’, in French)
Rev Med Suisse. 2019 Feb 13;15(638):373-375.
Digestive and nutritional problems of children with cerebral palsy.
Rev Med Suisse 202223:18(770) 324-327
Prevalence and predictive factors of histopathological complications in children with oesophageal atresia.
Eur J Pediatr Surg. 2018 Dec 19. doi: 10.1055/s-0038-1676505.
PPI treatment in patients with esophageal atresia and tracheoesophageal fistula: how long and who should be treated?
Data from a prospective cohort. J Pediatr Gastroenterol Nutr. 2019 Jul;69(1):45-51. doi: 10.1097