[Necrotizing enteritis due to hypersensitivity reaction (similar to Arthus phenomenon)].

Necrotizing enteritis is a clinico-pathological entity, marked by segmentary necrosis of jejunum and ileum, variously extended, and is a rather rare picture, the etiopathogenesis of which is prevailingly supported by troubles in the intestinal circulation or by intestinal locations of reactions of hypersensitivity (Arthus-similar allergic reaction). The authors start from a case they had the opportunity to observe and successfully surgically treated, and discuss its etiopathogenetic and therapeutical implications in the light of an up-to-date reviewing of the literature thereabout.