{Reference Type}: English Abstract
{Title}: [Pediatric very early onset inflammatory bowel disease: Role of pathology].
{Author}: Drabent P;Berrebi D;
{Journal}: Ann Pathol
{Volume}: 43
{Issue}: 3
{Year}: Jun 2023 28
{Factor}: 0.411
{DOI}: 10.1016/j.annpat.2023.02.003
{Abstract}: Inflammatory bowel diseases (IBD), including Crohn's disease and ulcerative colitis, are a heterogeneous group of multifactorial pathologies, often polygenic, due to a dysregulated immune response in a genetically susceptible host. In children under 6 years of age, a significant proportion of IBD, named "very early onset inflammatory bowel diseases" (VEO-IBD), are monogenic disorders in more than one third of cases. Over 80 genes have been linked to VEO-IBD and pathological descriptions are sparce. In this clarification, we describe the clinical aspects of monogenic VEO-IBD and the main causative genes, as well as the various histological patterns observed in intestinal biopsies. The management of a patient with VEO-IBD should be a coordinated effort by a multidisciplinary team including pediatric gastroenterologists, immunologists, geneticists, and of course pediatric pathologists.