Tomas Wester

Tomas Wester is a Professor/Senior Physician at Karolinska Institutet, affiliated with the Department of Women's and Children's Health. His research focuses on gastrointestinal pediatric surgery, including malformations and surgical disorders such as anorectal malformations, Hirschsprung disease, necrotizing enterocolitis, and acute appendicitis. He leads a research group investigating surgical outcomes, register studies, and interventional approaches to improve clinical care and patient quality of life.

• Education: Docent (2009), Karolinska Institutet
• Grants: Recipient of grants from the Swedish Research Council for studies on non-operative treatment of appendicitis and antibiotic therapies.

Research Interests: Dr. Wester’s work spans surgical outcomes for congenital anomalies (e.g., congenital diaphragmatic hernia, esophageal atresia), functional and quality-of-life assessments in pediatric surgical patients, and comparative studies of surgical techniques versus non-operative approaches (e.g., antibiotics for appendicitis). His group collaborates internationally on randomized controlled trials and epidemiological studies.

Publications: Over 200 peer-reviewed articles, including high-impact studies in The Lancet, Annals of Surgery, and Journal of Pediatric Surgery, focusing on surgical innovations, long-term patient outcomes, and standardized care protocols.

Labs/Teams: Leads the 'Gastrointestinal pediatric surgery – Tomas Wester's research group,' which emphasizes translational research from molecular mechanisms to clinical trials.