Concomitant vascular compressive syndromes: are they all described? About a case of recurrent lower gastrointestinal bleeding.

<title>Abstract</title> Vascular compressive syndromes are a rare entity in which there is extrinsic venous vascular compression, usually by an arterial vessel and a hollow viscus or bony structure. These syndromes can appear isolated or in some cases concomitance of several at the same time has been seen, as in our case. Most of the time they are incidental findings in imaging tests, however, they can cause clinical and even morbidity and mortality of the patient. In our case, the patient presented lower gastrointestinal bleeding due to jejunal varices secondary to compression of a branch of the superior mesenteric vein between the superior mesenteric artery and the third duodenal portion, a syndrome not described in the literature, and which was causing recurrent gastrointestinal bleeding with hemodynamic repercussions.