[Obscure gastrointestinal bleeding due to gastrointestinal stromal tumors].

Background: The gastrointestinal stromal tumours (GIST) are the most common soft tissue sarcomas of the digestive tract. They are usually found in the stomach (60-70%) and small intestine (25-30%) and, less commonly, in the oesophagus, mesentery, colon, or rectum. The symptoms present at diagnosis are, gastrointestinal bleeding, abdominal pain, abdominal mass, or intestinal obstruction.

[Choledochal cyst during pregnancy. Report of 3 cases and a literature review].

Background: Choledochal cysts are rare. They usually present during childhood in women, but it can also be seen during pregnancy. Clinical signs and symptoms are obscured during this time, thus it can complicate the diagnosis and represent a life threatening complication for both the mother and the child.

[Experience of the surgical management of the esophageal achalasia in a tertiary care hospital].

Introduction: Achalasia is a primary esophageal motor disorder. The most common symptoms are: dysphagia, chest pain, reflux and weight loss. The esophageal manometry is the standard for diagnosis.

[Hepatic artery pseudoaneurysm: report of two cases].

Background: Hepatic pseudoaneurysm is rare and potentially fatal. It occurs as a consequence of injury to the vascular wall, erosion diathermy through clips, biliary leakage and secondary infection. The main symptom is intra-abdominal bleeding.

[Acute pancreatitis and afferent loop syndrome. Case report].

Background: The afferent syndrome loop is a mechanic obstruction of the afferent limb before a Billroth II or Roux-Y reconstruction, secondary in most of case to distal or subtotal gastrectomy. Clinical case: Male 76 years old, with antecedent of cholecystectomy, gastric adenocarcinoma six years ago, with subtotal gastrectomy and Roux-Y reconstruction. Beginning a several abdominal pain, nausea and vomiting, abdominal distension, without peritoneal irritation sings.

[Biliary ileus: 10-year experience. Case series].

Background: Biliary ileus is present in 0.06% of patients with gallstones as an outcome of a cholecystoenteric fistula, most frequently presenting as an intestinal obstruction. It is a clinic entity occasionally diagnosed, which translates into a significant margin of complications and mortality ranging from 12 to 27%.

[Cystic neoplasm of the pancreas: a ten years experience].

Background: Pancreatic cystic lesions (PCL) are identified in 1 % of patients who undergo abdominal computed tomography scans, because it is difficult to discriminate clinically between benign and malignant PCL. The PCL must be distinguished from inflammatory pseudocysts, which can have a similar radiographic appearance. The aim of this study was to review the incidence of PCL during 10 years.

[Splenectomy incidence in a specialized care hospital].

Background: splenectomy has been elected surgical procedure for multiple hematologic diseases, specially for Idiopathic Thrombocytopenic Purpura. The aim of this study was to compare the incidence of splenectomies in two different periods of time and to show decrease tendency during the most recent years.

Methods: it was a retrospectively reviewed study from medical records of patients who underwent splenectomy at the Hospital de Especialidades Siglo XXI, between 1986 to 1990 and 1995 to 1999.

[Bariatric surgery for pseudotumor cerebri. Case report].

Introduction: We report here a case of a patient with pseudotumor cerebri (PTC) associated with morbid obesity. PTC, also called benign intracranial hypertension, is a known complication of morbid obesity with resolution by reduction of obesity.

Clinical Case: A 42-year-old female with morbid obesity and secondary PTC underwent a modified jejunocolonostomy.

[Frantz-Gruber tumor: a case report].

Objective: The objective of this report is to describe the existence of a rare tumor that must be taken into consideration when studying the diagnosis of pancreatic tumors.

Case Report: A 20-year-old female with abdominal pain as an only manifestation was seen. The diagnosis of a pancreatic head and body tumor was made.

[Abdominal pseudocyst in a patient with ventriculoperitoneal shunt. A case report].

Since 1905, the abdominal cavity has been used for absorption of cerebrospinal fluid in patients with hydrocephalus. Among complications in its use is formation of abdominal pseudocysts. We describe the case of a patient with hydrocephalus who developed an abdominal pseudocyst.

[Sclerosing encapsulated peritonitis. Diagnostic and therapeutic challenge for the general surgeon].

Intestinal obstruction is one of the most frequently abdominal problems that concern general surgeons. One of the infrequent causes of mechanical obstruction is sclerosing encapsulating peritonitis (SEP); this entity causes intense fibrosis of the components in the peritoneal layer, resulting in adhesion of abdominal organs. SEP can be primary or secondary; both are a type of peritoneal fibrosclerosis that causes intestinal obstruction with difficult resolution and a great number of complications.