Stab wound causing mesenteric-portal arteriovenous fistula: an unusual case with a spontaneous closure.

A case of spontaneous closure of a mesenteric-portal arteriovenous fistula secondary to a stab wound is described. Although a variety of clinical complications can result from such fistulae, it is not always possible to perform an immediate closure of such lesions. The patient described was unable because of his condition to undergo surgical repair of his fistula: when readmitted after 2 months the fistula had closed and the artery was normal.