Caracterización de la infección por Helicobacter pylori en niños y adolescentes en un servicio ambulatorio / Characterization of Helicobacter pylori infection in children and adolescents in an ambulatory service

Introducción: la infección por Helicobacter pylori es muy común, particularmente en los países en vías de desarrollo, y juega un rol importante en la enfermedad ácido péptica. Objetivos: conocer la prevalencia y algunos datos clínico epidemiológicos, describir los hallazgos endoscópicos (gastritis eritematosa, nodular y úlcera duodenal), y relacionarlos con los hallazgos histológicos; describir la asociación entre los grados histológicos de la gastritis crónica y la positividad de la prueba de ureasa rápida y la presencia de Helicobacter pylori según histología, así como identificar la relación de los pacientes con gastritis crónica antral y úlcera duodenal por Hp, con la edad. Métodos: se realizó un estudio tipo descriptivo prospectivo durante 3 años se hizo una encuesta de síntomas a pacientes y/o padres y examen físico. Se realizó panendoscopia, previo consentimiento informado, y 2 biopsias de mucosa antral para prueba de ureasa rápida, así como estudio histopatológico (hematoxilina-eosina y Giemsa) para determinar el grado de gastritis y presencia de Helicobacter pylori según sistema Sydney. Se demostró la infección por uno de los métodos. Resultados: se seleccionaron 196 pacientes entre 7-18 años (media 14,6) de 471 (41,6 por ciento). El 53 por ciento era del sexo femenino, y el 59,7 por ciento tenía entre 10 y 14 años. Por endoscopia, el 49,5 por ciento tenía gastritis eritematosa antral, el 36,8 por ciento gastritis nodular astral, y el 13,7 por ciento úlcera duodenal con gastritis asociada. Con antecedentes familiares de úlcera péptica estuvo el 29,6 por ciento, con epigastralgia el 85,2 por ciento, con acidez el 46,4 por ciento con vómitos el 21 por ciento y con náuseas el 16,3 por ciento. En relación con el tiempo de evolución al diagnóstico, predominó el grupo de más de un año (24,5 por ciento), seguido del de 4-6 meses (22,4 por ciento). Todos presentaron gastritis crónica de diferentes grados: ligera (34,7 por ciento), moderada (37,2 por ciento) y severa (28,1 por ciento), con Helicobacter pylori por ureasa rápida 83,2 por ciento y 93,4 por ciento por histología, con coincidencia de ambos métodos en 150 (76,5 por ciento). Se observó presencia de nódulos linfoides en 41,8 por ciento. Conclusiones: la infección por Helicobacter pylori es frecuente en niños y adolescentes, causa lesiones inflamatorias gastroduodenales, en particular, gastritis nodular antral. Se encuentra una asociación importante del Helicobacter pylori por ambos métodos diagnósticos. Se recomienda seguimiento por biopsia, en especial, a los que continúan con infección crónica y presenten nódulos linfoides, por el riesgo de presentar linfoma gástrico de células B del tejido linfoide asociado a mucosa (linfoma MALT), si no se consigue la erradicación del Helicobacter pylori(AU)

Introduction: Helicobacter pylori infection is very common, particularly in developing countries, and plays an important role in acid peptic disease. Objectives: to know the prevalence and some clinical epidemiological data for describing the endoscopic findings (erythematous gastritis, nodular and duodenal ulcer), and to relate them with the histological findings; to describe the association among the histological degrees of chronic gastritis and the positivity of the rapid urease test, and the presence of Helicobacter pylori according to histology, as well as identifying by Hp with age the number of patients with chronic antral gastritis and duodenal ulcer. Methods: a prospective, descriptive study was carried out during 3 years, and a survey of symptoms was made to patients and / or parents and also physical examination. Panendoscopy was performed with prior informed consent, and also 2 antral mucosa biopsies for rapid urease test, as well as histopathological study (hematoxylin-eosin and Giemsa) to determine the degree of gastritis and the presence of Helicobacter pylori according to the Sydney system. Infection was demonstrated by one of the methods. Results: 196 patients among 7-18 years (mean 14.6) were selected of 471 (41.6 percent). 53 percent were female, and 59.7 percent were among 10 and 14 years old. By endoscopy, 49.5 percent had antral erythematous gastritis, 36.8 percent astral nodular gastritis, and 13.7 percent duodenal ulcer with associated gastritis. 29.6 percent had a family history of peptic ulcer, 85.2 percent of epigastralgia, 46.4 percent with acidity, 21 percent with vomiting, and 16.3 percent with nausea. In relation to the time of evolution to the diagnosis, the group of more than one year prevailed (24.5 percent followed by the one of 4-6 months (22.4 percent). All presented chronic gastritis of different degrees: light (34.7 percent), moderate (37.2 percent) and severe (28.1 percent), with Helicobacter pylori by rapid urease 83.2 percent, and 93.4 percent by histology with coincidence of both methods in 150 (76.5 percent). The presence of lymphoid nodules was observed in 41.8 percent. Conclusions: Helicobacter pylori infection is frequent in children and adolescents causing gastroduodenal inflammatory lesions, in particular antral nodular gastritis. An important association of Helicobacter pylori is found by both diagnostic methods. Follow-up by biopsy is recommended, especially those who continue with chronic infection and have lymphoid nodules due to the risk of presenting B-cell gastric lymphoma of the lymphoid tissue associated to the mucosa (MALT lymphoma), if Helicobacter pylori eradication is not achieved(AU)

Comparação entre os achados endoscópicos e o diagnóstico histológico de gastrite antral. Arq Gastroenterol / Comparison between the endoscopic findings and the histological diagnosis of antral gastrites

ABSTRACT BACKGROUND: Gastritis is a very common disorder that is widely distributed worldwide, representing one of the most prevalent pathological entities in Gastroenterology and Digestive Endoscopy. OBJECTIVE: This study aims to analyze the correlation between the endoscopic findings and the histological diagnosis of antral gastritis. METHODS: In this study, 92 reports of upper digestive endoscopy were performed between November 2014 and January 2015, including biopsy of the antral gastric mucosa, comparing the endoscopic and histological findings, which were classified according to the Sidney System. The 92 exams included 35 men and 57 women, ranging in age from 15 to 84 years. The most frequent indication was epigastric pain. RESULTS: Of the 92 examinations analyzed, the histological diagnosis of antral gastritis appeared in 75 exams, 59 endoscopic reports contained the diagnosis of antral gastritis, and 33 endoscopic findings were normal. The kappa coefficient was 0.212 (P<0.05), indicating that there was no significant agreement between the endoscopic findings and the histological diagnosis of antral gastritis. CONCLUSION: We conclude that histology represents the gold standard method for the diagnosis of antral gastritis and that in daily clinical practice, biopsies should always be performed, regardless of the endoscopic findings.

RESUMO CONTEXTO: Gastrite é uma afecção muito comum, de larga distribuição mundial, representando uma das entidades patológicas mais prevalentes em Gastroenterologia e Endoscopia Digestiva. OBJETIVO: Este estudo tem por objetivo analisar a correlação entre os achados endoscópicos e o diagnóstico histológico de gastrite antral. MÉTODOS: Nesse estudo, foram analisados 92 laudos de endoscopia digestiva alta, realizados entre novembro de 2014 e janeiro de 2015, que continham biópsia de mucosa gástrica antral, comparando-se os achados endoscópicos e histológicos, que foram classificados segundo o Sistema Sidney. Os 92 exames analisados englobaram 35 homens e 57 mulheres, com idade variando entre 15 e 84 anos. A indicação mais frequente foi epigastralgia. RESULTADOS: Dentre os 92 exames analisados, o diagnóstico histológico de gastrite antral apareceu em 75 exames, sendo que 59 laudos endoscópicos continham o diagnóstico de gastrite antral e 33 laudos endoscópicos foram normais. O coeficiente kappa foi 0,212 com P<0,05, mostrando que não há concordância significativa entre os achados endoscópicos e o diagnóstico histológico de gastrite antral. CONCLUSÃO: Concluímos que a histologia representa o método padrão-ouro para o diagnóstico de gastrite antral, e que na prática clínica diária, biópsias devem ser sempre realizadas, independente dos achados endoscópicos.

Upper gastrointestinal endoscopy applied in pediatrics: endoscopic and histological findings, including Helicobacter pylori / Endoscopia digestiva alta aplicada em pediatria: hallazgos endoscópicos e histológicos incluyendo al Helicobacter pylory

Objective: To present and discuss the endoscopic and histological results, as well as the incidence of Helicobacter pylori and other diseases, indications and characteristics of upper digestive endoscopies performed in children. Material and methods: Twenty-five endoscopies were performed in children aged six months to 11 years (mean 7.69 years), from February 2013 to January 2016. In 200 patients, endoscopies were diagnostic and serial biopsies were performed (esophagus, stomach and duodenum), in 120 of them. Results: The indication of endoscopy was diagnosed in 88.89% of the patients, and in 26 patients, a therapeutic procedure was performed. The most frequent endoscopic findings were esophagitis in 49 patients, gastritis in 84 and duodenitis in 16 patients. Four duodenal ulcers were diagnosed. In the therapeutic endoscopies, six gastrostomies were performed, 14 foreign body withdrawals, five nasoenteral tube passages and esophageal dilatation. The H. pylori survey was performed by anatomopathological method and was positive in 26 (13%) of the 200 patients in whom it was searched. Conclusion: pediatric endoscopy is an important niche of the digestive endoscopy, where it is important to emphasize the relevance of the institutional structure that performs these procedures, in order to conduct them safely, being able to treat possible and feasible complications

Objetivo: Presentar y discutir los hallazgos endoscópicos e histológicos, así como la incidencia de Helicobacter pylori y otras enfermedades, indicaciones y características de endoscopia digestiva alta realizada en niños. Material y métodos: Fueron realizadas 225 endoscopias en niños de seis meses a 11 años (media de 7,69 años) a partir de febrero de 2013 hasta enero de 2016. En 200 pacientes, en las endoscopias diagnósticas se llevan a cabo biopsias seriadas (esófago, estómago y duodeno) en 120 de ellos. Resultados: La indicación de endoscopia fue diagnóstica en el 88,89% de los pacientes y en 26 pacientes se realizaron un procedimiento terapéutico. Los hallazgos endoscópicos más frecuentes fueron esofagitis en 49 pacientes, gastritis y duodenitis 84 y en 16 pacientes se diagnosticaron cuatro úlceras duodenales. En endoscopias terapéuticas fueron realizadas seis gastrostomías, catorce extracciones de cuerpos extraños, cinco pasajes de sonda nasogástrica y una dilatación esofágica. El estudio de H. pylori se realizó por el método histopatológico y fué positivo en 26 (13%) de 200 pacientes en los que se han buscado. Conclusión: La endoscopía pediátrica es un nicho importante de la endoscopía digestiva donde es importante enfatizar la relevancia de la estructura institucional que realiza estos procedimientos para conducirlos con seguridad y ser capaces de tratar las complicaciones posibles