[Carcinoid tumors, leiomyosarcoma and invasive adenocarcinoma metastasis of the Treitz angle].

Our paper studies the quite rare occurrence of the digestive superior occlusive pathology, namely some causes which might induce partial or even total obstruction of the digestive tract, at the distal anatomical limits of the duodenum, also known as the Treitz angle. The first two described cases were carcinoid tumors, obstructive and ulcerated in the lumen of the same angle. The last two cases were an obstructive leiomyosarcoma and an invasive mesenteric metastasis from a right colon cancer, which cause a total external compression of the Treitz angle, clinically manifested as a complete food intolerance, as a first symptom. Concerning the clinical evolution, these are totally different lesions, malign, metastasis and neuroendocrine tumors, which occurred at the same level, had a totally different clinical evolution and surgical approach, only three of them developing at good postoperative course. The imaging, clinical and pathological diagnosis problems, the different specific surgical solutions, the postoperative care and finally the rarity of this level of obstruction of the small bowel, are the aim of this paper.