Au cours d'une operation pour suspicion d'appendicite aigue, la decouverte d'un appendice geant, d'aspect pseudotumoral, est exceptionnelle. Paradoxalement son etiologie est le plus souvent inflammatoire ou infectieuse. Nous rapportons un cas dont l'examen histologique, apres resection ileocolique droite segmentaire, revele une maladie de Crohn isolee de l'appendice. A ce jour, 156 diagnostics similaires ont ete decrits dans la litterature. L'evolution de cette maladie, differente de la maladie de Crohn ileocolique classique, est benigne et ne necessite ni investigation, ni suivi particulier.
A giant appendix is an extremely rare and improbable finding during surgery in suspected cases of acute appendicitis. Although this condition is primarily suggestive of neoplasia, it is usually due to an inflammatory or infectious disease. We report a case of Crohn's disease limited to the appendix, which was diagnosed after a short right ileocolectomy. Only 156 similar diagnoses have been reported in the literature to date. This disease appears to have a benign course and<space> therefore differs from classical Crohn's ileocolitis. For this reason, these patients do not require any specific investigation or follow-up.