The idiopathic myointimal hyperplasia of mesenteric veins is a rare pathology, affecting recto-sigmoid and mimicking clinically an inflammatory chronic disease of the bowel. Only about fifteen cases have been reported in the literature. This lesion is characterized by a myointimal thickening of the mesenteric veins, without inflammatory infiltrate of the vascular wall, differentiating it from vasculitis. We present here the case of a 48-year-old man, in whom the diagnosis of ulcerative colitis then digestive vasculitis had first been raised.
Keywords: Chronic inflammatory bowel disease; Hyperplasie myo-intimale idiopathique des veines mésentériques; Idiopathic myointimal hyperplasia of mesenteric veins; Maladie inflammatoire chronique de l’intestin.
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