[Preneoplastic gastric lesions and helicobacter pylori in endoscopic detection and early diagnosis of gastric cancer in a population of a medium and high socio-economic level].

Objectives: To determine the prevalence and characteristics of premalignant gastric lesions and its relationship with helicobacter pylori infection.

Methods: We performed a cross-sectional retrospective study. Between january and june 2008, consecutive subjects of middle and high socioeconomic status were evaluated by upper gastrointestinal endoscopy during a gastric cancer screening in Central FAP Hospital.

[Prevalence, clinical-endoscopic characteristics and predictive factors of Barrett's Esophagus in endoscopic screening for gastric cancer].

Purpose: Determine the prevalence, clinical-epidemiological characteristics and predictive factors for Barrets Esophagus (BE).

Method: An analytical and transversal study was conducted, followed by a case-control study nested in a population participating in a gastric cancer screening campaign, from January to June 2008 at the Central Hospital of the Peruvian Air Force (FAP). A BE case was defined due to the endoscopic presence of columnar-appearing mucosa confirmed by intestinal metaplasia at biopsy.

[Endoscopic lesions in the upper digestive tract in patients with terminal chronic renal insufficiency].

Introduction: End Stage Renal Disease (ESRD) causes changes that affect every organ system including the digestive tract. These changes are manifested by a variety of symptoms and are responsible for a high degree of morbidity and mortality. The main objective of this study is to determine the most common endoscopic lesions of the upper gastrointestinal tract seen in patients with a diagnosis of ESRD.

Outcome of bone marrow transplantation patients requiring mechanical ventilation.

Objective: To identify outcome predictors in bone marrow transplantation (BMT) patients admitted to the intensive care unit (ICU) of The University of Texas M. D. Anderson Cancer Center who required endotracheal intubation and mechanical ventilation.