„Features of patients with newly diagnosed inflammatory bowel disease treated at the Department of Pediatrics, University Hospital Centre Zagreb, in the period 2011-2013.“, Lorena Klasić. The study retrospectively included children with inflammatory bowel disease hospitalized in the University Hospital Centre Zagreb at the Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, from January 2011. till December 2013. Gender, age at onset of symptoms, leading symptom, anthropometric measures, and the results of specific tests were analyzed in the subgroup of newly diagnosed patients. A total of 86 patients with endoscopically confirmed diagnosis of inflammatory bowel disease were treated, of which 39 with newly discovered disease: there were 13 patients with ulcerative colitis, 25 with Crohn's disease, and 1 patient with the diagnosis of unspecified (intermediate) colitis. Most patients were diagnosed at the age of 16 years and 50% of the newly diagnosed patients were older than 13 years. The majority of children were adequately nourished. Although a relatively small number of subjects were underweight at the time of diagnosis (3/39), weight loss preceded in 16/39 patients. The most common leading symptom was diarrhea, with or without admixture (27/39). Abundant fresh blood in the stool was observed in 6 patients as the leading symptom, significantly more common in ulcerative colitis. Extraintestinal manifestations of the disease were present rarely at the time of diagnosis, only in 5 patients. Laboratory markers of inflammation (sedimentation rate, fibrinogen, C-reactive protein) were increased in both subgroups of patients. In conclusion, initial clinical presentation and laboratory findings were similar in both subgroups of patients. This study identified twice as many children with Crohn's disease than with ulcerative colitis among the newly diagnosed patients, which is consistent with researches from other parts of Europe and the world.