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Objetivos. To describe the histologic and endoscopic characteristics reported among patients diagnosed with gastric cancer in "Daniel Alcides Carrion" National Hospital in Callao. Materials and methods. We performed a case series including all patients with histological diagnosis of gastric cancer from January 2009 to December 2011. Data were obtained from the registers of the pathology service of Daniel Alcides Carrion National Hospital. Factors such as age and gender of patients, histologic type, endoscopic location, presence of intestinal metaplasia, histologic degree, and cancer morphology were evaluated. Results. 120 patients were included. Mean age was 65.4 ± 13.6 years; 59 (49%) were male. Based on the histologic type, intestinal type was found among 68 (56%); diffuse type among 45 (38%), and a mixed type in 7 (6%). Regarding the site, 23 (19%) of gastric cancers were located in the fundus; 52 (43%) in the body; 39 (33%) in the antrum, and 6 (5%) in the pylorus. Patients with gastric cancer of the intestinal type were in average older than those with a diffuse type (69.1 ± 10.3 versus 59.3 ± 15.3). 60.3% of intestinal-type gastric cancers were located proximally, versus 66.6% of diffuse-type cancers. Conclusion. Among the studied population, diffuse-type gastric cancer appears at an earlier age than the intestinal type, and its most common location is proximal. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the sensitivity of gastric biopsy in detecting Helycobacter pylori (Hp) infection among patients who received proton pump inhibitors (PPI) 7-14 days before endoscopy compared to those who did not received PPI or who received a different medication. Methods: Case series. Patients with dyspepsia who undergo upper endoscopy and biopsy from November 2008 to January 2009 were included if they had received PPI 7-14 days before the procedure. Patients with gastric cancer, prior surgery and those who had received antibiotics or bismuth subsalicylate were excluded. Two biopsies of the main gastric body and antrum were taken. The STATA software was used for the analysis. Results: 80 patients were studied; 38 (47.5%) received PPI. 64.29% (27/42) of those who did not received PPI were Hp positive vs. 65.79% (23/28) in patients who received PPIs (p=0.90). Conclusions: Hp rate was similar irrespective of PPI use. [ABSTRACT FROM AUTHOR]