[Gastrointestinal bleeding and acute hepatic failure by leptospirosis: an entity that should not be forgotten].

Leptospirosis disease is caused by the spirochete Leptospira. It is a worldwide distribution zoonosis, with predominance in the tropics. In Spain, it is not frequent but some cases have been noticed especially in humid areas surrounded by rivers, lakes or ponds, such as Catalonia, Andalucia or the Valencian Community.

Current role of capsule endoscopy in Crohn's disease.

Capsule endoscopy (CE) currently plays an important role in Crohn's disease (CD). It is a noninvasive technique that has led to a breakthrough in the endoscopic diagnosis of diseases of the small intestine. Its superior diagnostic performance and excellent safety profile lead to its considerable acceptance on the part of the patient.

[Duodenal adenocarcinoma: a rare diagnosis].

Duodenal adenocarcinoma is a rare disease whose symptoms are usually vomit, weight loss and lack of appetite; appearing more frequently in men in their sixties. Upper gastrointestinal endoscopy is the technique chosen for its diagnosis, also relying on other techniques such as endoscopic ultrasonography or computed tomography for the extension study. In this regard we report the case of a patient diagnosed of bulbar duodenal adenocarcinoma in our hospital.

Pseudoaneurysm associated with complicated pancreatic pseudocysts.

A pseudoaneurysm associated with a pseudocyst is a serious and unusual complication of chronic pancreatitis. Its treatment is complex due to its elevated mortality and the need for multidisciplinary management. Initial measures consist in locating the hemorrhage through computerized dynamic tomography and arteriography.

[Collagenous sprue: secondary or independent from celiac disease?].

Collagenous sprue is a rare disease that goes with persistent diarrhea, weight loss and bad absortion, because it affects the small intestine, mainly duodenum and proximal jejunum. Diagnosis is made by having clinical signs and histological proof of atrophy and subepitelial deposit of collagenous material. Its etiology is not known completely, it is proposed that the origin is autoimmune because its relationship with celiac disease.