Characterization of gastric cancer in Guatemala
DOI:
https://doi.org/10.54495/Rev.Cientifica.v25i2.87Keywords:
gastric cancer, Helicobacter pylori, characterization, infection, GuatemalaAbstract
Taking into account that gastric cancer in the Guatemalan population have shown an increase in recent years and that the prevalence of H. pylori infection reported is 65%, it was considered important to analyze the characteristics of this type of cancer and its relation to the bacteria. We obtained information from medical records of patients diagnosed with gastric cancer, statistically representative, who were treated at the Cancer Institute and “Bernardo del Valle S” Hospital during the period 2004 to 2007.
A total of 284 records were reviewed and it was found that the most affected age range is 41-80 years. For the advanced stage of cancer at the time of the consultation, 107 patients (37%) were considered “case out of cancer treatment.” In 248 (87%) patients, diagnosis was made by endoscopy and of them only 69 (27.8%) were investigated for H. pylori, finding 22 (31.9%) with a positive result.
It was established 85 cases of diffuse cancer (34.3%) and 134 of intestinal type (54%), the most frequent histological type in H. pylori positive patients was intestinal (10/22, 45.4%), while diffuse type prevailed in the negative (26/47, 55.3%). The most affected stomach area was antrum (69/155, 44.5%), union esophagus and stomach (24/155, 15.5%) and body (19/155, 12.3%). With regard to gender a male predominance was observed being 76 (56.7%) for the
intestinal type and 47 (55.3%) for diffuse, allowing to establish a relationship of 1.31 and 1.26, respectively.
The hazard rate ratio is 1.97 (IC = 0.8251 - 4.7290, p = 0.20), indicating that Guatemalans patients with H. pylori infection have twice the risk of intestinal cancer type one of the diffuse type, while the joint probability that an H. pylori positive patient develop cancer is 0.0058 (CI 0.0052 to 0008), greater than the global probability reported by WHO.
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