[Intraluminal diverticulum of the duodenum. Report of a case and review of published cases].

The intraluminal diverticulum of the duodenum is very rare; it is an anatomical sac like formation, located in the interior of the duodenum and communicating with it through an orifice situated a the upper pole of the diverticulum where the wall is covered by mucosa on both faces. It has interesting etiopathogenic problems. We present an observation after reviewing the corresponding literature. It was a 32-year old woman suffering from moderate epigastric pains, pyrosis, chronic constipation, markedly nervous. The epigastric pain was unrelated to food or physical efforts. The physical examination showed slight epigastric pain. The gastroduodenal radiological examination showed in the second part of the duodenum a particular image, pear-shaped, homogeneous, impregnated in barium; this image was surrounded by a radiotransparent halo which changed with the patient's position. It has been seen that the diverticulum changes in size and position in agreement with the peristaltism, without ever obstructing the passage through the duodenum. A review is made of the literature and history of intraluminal diverticulum.