[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]. / Lesiones gastricas preneoplasicas y helicobacter pylori en despistaje endoscopico para cancer gastrico en poblacion de nivel socioeconomico medio y alto.

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. The demografic, clinic and endoscopic information were analysed. RESULTS: 2616 patients were evaluated. Diagnosis histological of premalignant gastric lesions was made in 187 patients (7.1%) 34 (1.3%) atrophic gastritis (AG), 55 (2.1%), complete intestinal metaplasia (CIM), 92 (3.5%) incomplete intestinal metaplasia (IIM), and 6 (0.2%) dysplasia. The frequency of helicobacter pylori infection was 76.5% (p=0.04), 65.5% (p=NS), 55.4% (p=NS) and 16.7% (p=0.03), in AG, CIM, IIM and dysplasia, respectively. The median age of presentation was similar between the lesions: 53.5 (+/-9.3), 52.6 (+/-11.2), 54.3 (+/-7.8) y 54.2 (+/-12.1) years in AG, CIM, IIM and dysplasia, respectively. The premalignant gastric lesions were more frequent in male subjects and under 60 years (p=NS). There were no significant differences among the differents gastric premalignant lesions and family history of gastric cancer, smoking and alcohol consumption (p=NS). CONCLUSIONS. The prevalence of premalignant gastric lesions in our study was low. The frequency of H. pylori infection was decreased in premalignant lesions more advanced. Association significant was only found among H. pylori infection and AG and dysplasia.

Lesiones gástricas preneoplásicas y helicobacter pylori en despistaje endoscópico para cáncer gástrico en población de nivel socioeconómico medio y alto / 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

OBJETIVO: Estudiar la frecuencia y características de las lesiones gástricas preneoplásicas y su relación con el helicobacter pylori (HP). MÉTODO: Se realizó un estudio transversal retrospectivo en una población de nivel socioeconómico medio y alto participante en una campaña de despistaje de cáncer gástrico, desde enero a junio del 2008 en el Hospital Central de la FAP. Se evaluaron variables demográficas, clínicas y endoscópicas. RESULTADOS: De 2616 pacientes estudiados, 187 (7.1%) presentaron diagnostico histológico de lesiones gástricas preneoplásicas: 34 (1.3%) gastritis atrófica (GA), 55(%) metaplasia intestinal completa (MIC), 92 (3.5%) metaplasia intestinal incompleta (MII), y 6 (0.2%) displasia. La frecuencia de infección por HP fue de 76.5% (p=0.04), 65.5% (p=NS), 55.4% (p=NS) y 16.7% (p=0.03), en la GA, MIC, MII y displasia, respectivamente. La edad media de presentación fue similar entre las 4 lesiones: 53.5 (±9.3), 52.6 (±11.2), 54.3 (±7.8) y 54.2 (±12.1) años en la GA, MIC, MII y displasia, respectivamente. Las lesiones preneoplásicas fueron mas frecuentes en varones y menores de 60 años de edad (p=NS). No se encontró asociación entre las lesiones preneoplásicas y el antecedente familiar de cáncer gástrico, consumo de alcohol y tabaco (p=NS). CONCLUSIONES: La prevalencia de las lesiones gástricas preneoplásicas en nuestro estudio fue baja. La frecuencia de la infección por HP fue decreciente en las lesiones preneoplásicas mas avanzadas. Solo se encontró asociación entre la infección por HP y la gastritis atrófica y la displasia gástrica.

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. The demografic, clinic and endoscopic information were analysed. RESULTS: 2616 patients were evaluated. Diagnosis histological of premalignant gastric lesions was made in 187 patients (7.1%), 34 (1.3%) atrophic gastritis (AG), 55 (2.1%), complete intestinal metaplasia (CIM), 92 (3.5%) incomplete intestinal metaplasia (IIM), and 6 (0.2%) dysplasia. The frequency of helicobacter pylori infection was 76.5% (p=0.04), 65.5% (p=NS), 55.4% (p=NS) and 16.7% (p=0.03), in AG, CIM, IIM and dysplasia, respectively. The medianage of presentation was similar between the lesions: 53.5 (±9.3), 52.6 (±11.2), 54.3 (±7.8) y 54.2 (±12.1) years in AG, CIM, IIM and dysplasia, respectively. The premalignant gastric lesions were more frequent in male subjects and under 60 years (p=NS). There were no significant differences among the differents gastric premalignant lesions and family history of gastric cancer, smoking and alcohol consumption (p=NS). CONCLUSIONS. The prevalence of premalignant gastric lesions in our study was low. The frequency of H. pylori infection was decreased in premalignant lesions more advanced. Asociation significant was only found among H. pylori infection and AG and dysplasia.

[Prevalence, clinical-endoscopic characteristics and predictive factors of Barrett's Esophagus in endoscopic screening for gastric cancer]. / Prevalencia, características clínico-endoscópicas y factores predictivos de Esófago de Barrett.

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. Demographic, clinical and endoscopic variables were evaluated, and bivariate and multivariate studies were conducted to identify predictive risk factors, using patients with gastroesophagic reflux and control patients of the study population as control groups. RESULTS: Out of 2273 patients studied, 11 (0.48%) patients with an average age of 52.2 +/- 7.7 years (43-69 year range) suffered from BE, out of which 81.8% were male. The 81.8% were symptomatic, with dyspepsia in 54.5% and with reflux in 27.3%, while 18.2% were asymptomatic. The short-segment BE was more common than the long-segment BE (72.7% versus 27.3%). The predictive factors found after the bivariate and multivariate analysis (comparing cases versus population control group) were: hiatal hernia [OR = 12.1, CI 95% 2.25 64.75], consumption of AINES [OR = 6.72, CI 95% 1.6-29.1] and consumption of alcohol [OR = 4.22, CI 95% 1.1-16.91]. CONCLUSIONS: BE prevalence in the study was low. The presence of hiatal hernia, consumption of AINES, and consumption of alcohol were predictive risk factors to develop BE in the study.

Prevalencia, características clínico-endoscópicas y factores predictivos de esófago de barrett / Prevalence, clinical-endoscopic characteristics and predictive factors of BarrettÆs Esophagus in endoscopic screening for gastric cancer

OBJETIVO: Determinar la prevalencia, características clínico-epidemiológicas y factores predictivos para Esófago de Barrett (EB). MÉTODO: Se realizó un estudio analítico y transversal, seguido de un estudio casos y controles anidado en una población participante en una campaña de despistaje de cáncer gástrico, desde enero a junio del 2008 en el Hospital Central de la FAP. Se definió caso de EB a la presencia endoscópica de mucosa de apariencia columnar en esófago distal confirmada con metaplasia intestinal en la biopsia. Se evaluaron variables demográficas, clínicas y endoscópicas, y se realizó estudio bivariado y multivariado para identificar factores de riesgo predictivos, teniendo como grupos controles a pacientes con reflujo gastroesofágico y a pacientes controles de la población estudiada. RESULTADOS: De 2273 pacientes estudiados, 11 (0.48 por ciento) presentaron EB, con una edad promedio de 52.2 ± 7.7 años (rango 43-69 años), de los cuales 81.8 por ciento fueron varones. El 81.8 por ciento fueron sintomáticos con dispepsia en 54.5 por ciento y reflujo en 27.3 por ciento, mientras que el 18.2 por ciento fueron asintomáticos. La variedad de EB segmento corto fue más frecuente que elsegmento largo (72.7 por ciento vs 27.3 por ciento). Los factores predictivos encontrados luego del análisis bivariado y multivariado (comparando casos vs grupo control Población) fueron: herniahiatal [OR= 12.1, IC 95 por ciento 2.25-64.75], consumo de AINES [OR= 6.72, IC 95 por ciento 1.6-29.1] y el consumo de alcohol [OR= 4.22, IC 95 por ciento 1.1-16.91]. CONCLUSIONES: La prevalencia del EB en nuestro estudio fue baja. La presencia de hernia hiatal, consumo de AINES y de alcohol fueron factores de riesgo predictivos parapresentar EB en nuestro estudio.

PURPOSE: Determine the prevalence, clinical-epidemiological characteristics and predictive factors for BarretÆs 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. Demographic, clinical and endoscopic variables were evaluated, and bivariate and multivariate studies were conducted to identify predictive risk factors, using patients with gastroesophagic reflux and control patients of the study population as control groups. RESULTS: Out of 2273 patients studied, 11 (0.48 per cent) patients with an average age of 52.2 ± 7.7 years (43-69 year range) suffered from BE, out of which 81.8 per cent were male. The 81.8 per cent were symptomatic, with dyspepsia in 54.5 per cent and with reflux in 27.3 per cent, while 18.2 per cent were asymptomatic. The short-segment BE was more common than the long-segment BE(72.7 per cent versus 27.3 per cent). The predictive factors found after the bivariate and multivariate analysis (comparing cases versus population control group) were: hiatal hernia [OR= 12.1, CI 95 per cent 2.25 û 64.75], consumption of AINES [OR = 6.72, CI 95 per cent 1.6-29.1] and consumptionof alcohol [OR = 4.22, CI 95 per cent 1.1-16.91]. CONCLUSIONS: BE prevalence in the study was low. The presence of hiatal hernia, consumption of AINES, and consumption of alcohol were predictive risk factors to develop BE in the study.