The pancreatic heterotopia of fortuitous operational discovery remains rare because of the medical imagery progress. We report a mesenteric localisation of aberrant pancreas identified during the assumption of responsibility of an abdominal emergency.A 26-year-old man was allowed with the urgencies for an acute obstruction of the small bowel. Surgical exploration revealed a distal support an ileo-parietal adherence near to an inflammatory hearth of appendicular origin. We noted, in addition to the mesentery of the first jejunal loop, a bilobate mass of glandular-like tissue with a pancreatic aspect. The adjacent jejunal handles were macroscopically healthy. The Pathological examination of the mass confirmed the existence of a mixed glandular exocrine and endocrine origin of pancreatic tissue, type I of the Heinrich's classification.This rare topographic entity of fortuitous discovery underlines the need for a meticulous surgical exploration of the abdominal cavity particularly in urgency when a summarized radiological assessment does not permit a complete morphological study.