Immunohistochemical detection of chlamydia trachomatis in sexually transmitted infectious proctitis.

INTRODUCTION: Since 2003, a progressive increase in sexually transmitted infections (STI), presented as proctitis, has been described in homosexual men. In 2013 Arnold et al. described microscopic features that enable pathologists to formulate a histological diagnosis of STI related proctitis. The aim of this study is to identify the presence of Chlamydia trachomatis by immunohistochemistry in a group of patients with male to male sexual activity and pathology compatible with STI proctitis. METHODS: Cross-sectional study. The study included 54 patients with risky sexual activity and histopathology compatible with STI-proctitis according to Arnold´s recommendations. The Chlamydia trachomatis identification was carried out retrospectively on paraffin blocks using mouse monoclonal antibodies from Santa Cruz biotechnology. RESULTS: all patients were young men with male to male sexual activity, 69% were positive for HIV. The most common endoscopic presentation was rectal ulcer (61%). Basal lymphoplasmacytic inflammation and mild crypt distortion were the most common histological findings. The immunohistochemical study identified positivity for Chlamydia trachomatis in 40% (18 of 45 tested) of STI proctitis cases. DISCUSSION: The epidemiological and endoscopic characteristics of the patients studied are similar to those previously reported. In accordance with Arnold et al., the most common histological findings were (a) mild distortion of the crypts; (b) dense and basal lymphoplasmacytic infiltrate and (c) scarcity of eosinophils. The positivity of chlamydia trachomatis in immunohistochemistry was lower than others studies that used PCR for this purpose. We did not find similar published studies to compare our results. CONCLUSIONS: In summary, 54 cases of patients with STI related proctitis are presented, all of them with distinctive histological characteristics and third of the cases tested positive by IHC for Chlamydia trachomatis.

Poor Knowledge of Acute Mountain Sickness in Latin American Medical Students.

INTRODUCTION: Acute altitude exposure is a common event in Latin America that can result in mild to severe altitude illness. Medical students from some Latin American countries receive little information on this topic. Our aim was to determine the knowledge and incidence of acute mountain sickness (AMS), as well as the methods used to prevent AMS among medical students attending the Pan-American Student Meeting in Cusco, Peru, a city at high altitude (3400 m). METHODS: We conducted a cross-sectional study on medical students attending a conference. Participants completed a questionnaire on the day of registration that collected demographic data and investigated students' knowledge of AMS, its prophylaxis, and their personal experience of symptoms. RESULTS: A total of 840 students attended the meeting. Two hundred eighty-eight returned surveys, 51 from high altitude locations. Respondent age was 23±3 y (mean±SD), and 72% were female. Thirty-two percent had basic knowledge about symptoms of AMS. Headache was recognized as a symptom by 79%. Knowledge of AMS prophylaxis was reported by 70%. Coca leaf products and dimenhydrinate were mentioned by 30 and 16%, respectively, whereas acetazolamide was recognized by only 10% of participants. AMS incidence was 42%. Prophylactic measures were adopted by 47% of the participants in our study. Thirty-six percent used dimenhydrinate and 27% used coca tea. Less than 1% used acetazolamide as recommended. CONCLUSIONS: We found poor knowledge of AMS and effective prophylaxis among medical students from several South American countries traveling to 3400 m.

Lactate Ringer's Versus Normal Saline in the Management of Acute Pancreatitis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

BACKGROUND: Fluid therapy plays a critical role in the management of acute pancreatitis. Normal saline (NS) is commonly used in these patients. However, Lactate Ringer's (LR) has also been shown to be useful for this condition. AIM: To assess the effect of LR compared to NS in patients with acute pancreatitis. METHODS: We searched in three electronic databases from inception to December 2020 for randomized controlled trials (RCTs). Outcomes were mortality, intensive care unit (ICU) admission, hospital stay, and Systemic Inflammatory Response Syndrome (SIRS) at 24, 48, and 72 h. The risk of bias was assessed using the Risk of Bias 2.0 tool. All meta-analyses were performed using a random-effects model. RESULTS: Four RCTs comprising 248 patients were included. The mean age ranged from 42.3 to 63.8 years and 49% of patients were men. Patients treated with LR had similar risk of mortality (risk ratio [RR], 0.53; 95% confidence interval [CI], 0.09-3.00) and SIRS at 24 h (RR, 0.69; 95% CI, 0.32-1.51), 48 h (RR, 0.80; 95% CI, 0.46-1.41), and 72 h (RR, 0.68; 95% CI, 0.37-1.25) compared to NS. LR had significantly lower hospital stay (mean difference, - 1.10; 95% CI, - 1.92 to - 0.28) and lower risk of ICU admission (RR, 0.42; 95% CI, 0.20-0.89) compared to NS. The risk of bias was low in nearly all RCTs. CONCLUSION: No differences were found in the mortality and SIRS at 24, 48, and 72 h in patients treated with LR and NS. In contrast, patients who received LR had a lower risk of ICU admission and lower hospital stay than NS.

Factores de riesgo para la malignidad de los pólipos vesiculares en dos hospitales públicos de Perú / Risk factors for gallbladder polyp malignancy in two public hospitals of Peru

Resumen Introducción: los pólipos de vesícula biliar, benignos y malignos, en la mayoría de pacientes tienen un diagnóstico generalmente incidental; a través de estudios de imágenes, que no se pueden distinguir con precisión según su grado de malignidad. Objetivo: determinar los factores de riesgo para la malignidad de los pólipos vesiculares en dos hospitales públicos peruanos. Metodología: estudio de cohorte retrospectiva, de datos secundarios, en colecistectomizados del 2004 al 2012 en un hospital de Lima y otro de Callao. Se definió como pólipo maligno según el tipo histopatológico de adenocarcinoma. Se obtuvieron los riesgos relativos y sus intervalos de confianza del 95 % (IC 95 %). Además, mediante curvas ROC (característica operativa del receptor), se obtuvieron la sensibilidad y especificidad según el tamaño de pólipo. Resultados: de las 368 biopsias, 26 (7 %) fueron adenocarcinomas. La mediana del tamaño de los pólipos fue de 4 mm (rango: 1-65 mm), 176 (51 %) tuvieron múltiples pólipos y 85 (23 %) tuvieron litiasis biliar asociada. En el análisis multivariado, se incrementó el riesgo de malignidad por cada milímetro del tamaño del pólipo en 26 % (IC 95 %:14 %-40 %, valor p < 0,001) y del tamaño de la pared vesicular en 182 % (IC 95 %:46 %-445 %, valor p: 0,002), ajustados por la edad del paciente, la litiasis y el tamaño vesicular. Para un tamaño de 6 mm se tuvo una sensibilidad de 81 % y especificidad del 85 %. Conclusión: se concluye que el tamaño del pólipo y el grosor de la pared vesicular estuvieron asociados con la malignidad de pólipos vesiculares.

Abstract Introduction: In most patients, gallbladder polyps, both benign and malignant, are usually an incidental finding. However, imaging studies cannot accurately establish their degree of malignancy. Objective: To determine the risk factors for gallbladder polyp malignancy in two Peruvian public hospitals. Methodology: Retrospective cohort study conducted on secondary data from patients who underwent cholecystectomy between 2004 and 2012 in Lima and another in Callao, Peru. The malignancy of the polyp was established according to the histopathological type of adenocarcinoma. Relative risks and their 95% confidence intervals (95%CI) were obtained. Moreover, ROC curves were used to determine sensitivity and specificity according to the size of the polyp. Results: Of 368 biopsies, 26 (7%) were adenocarcinomas. The median size of the polyps was 4mm (range: 1-65mm). 176 patients (51%) had multiple polyps, and 85 (23%) had associated gallstones. Multivariate analysis showed that the risk of malignancy increased by 26% (95%CI:14-40%, p-value:<0.001) per millimeter of polyp size and by 182% (95%CI:46-445%, p-value=0.002) based on vesicular wall size, adjusted for patient age, lithiasis and vesicular size. For a size of 6mm, sensitivity was 81%, and specificity was 85%. Conclusion: The size of the polyp and the thickness of the vesicular wall are associated with the malignancy of vesicular polyps.

[Gastric polyps: experience in Daniel Alcides Carrion Hospital 2014-2016]. / Pólipos gástricos: experiencia en el hospital Daniel Alcides Carrión - Callao 2014-2016.

OBJECTIVE: The purpose of this study was to determine the prevalence of the different types of gastric polyps in the Daniel Alcides Carrión Hospital between the years of 2014 and 2016, and also define the endoscopic and histopathological characteristics of the lesions. MATERIALS AND METHODS: 7559 endoscopic reports were reviewed, in which 148 gastric polyps were found. The patients age and sex as well as the localization, number, size and macroscopic and microscopic aspects of the polyps were recorded. RESULTS: The prevalence of gastric polyps was 1.9%; 74.3% of these were found in women with an average age of 61.5 years. 59.4% of the gastric polyps found were singular, and the majority were located on the body and antrum of the stomach. 74.29% of the polyps were less than 1 cm in diameter and 83.64% of these were sessile when seen macroscopically. According to the histological type, it was found that the majority of gastric polyps were hyperplasic (76.4%), followed by fundic gland polyps (17.5%) and gastric adenomas (6.1%). It was also found that multiple gastric polyps were associated with fundic gland polyps while singular polyps were most likely hyperplastic or adenomas. CONCLUSION: The prevalence of fundic gland polyps has increased, while the other types of polyps have maintained their estimated prevalence.

Hiperplasia neuroendocrina en colitis linfocitica y colitis ulcerativa / Neuroendocrine hiperplasia in linfocitic and ulcerative colitis

Introducción: Algunos autores han demostrado incremento de células neuroendócrinas en colitis microscópica y colitis ulcerativa. Objetivo: El objetivo del presente estudio fue evaluar la presencia de células neuroendócrinas en colitis linfocítica, colitis colagenosa y colitis ulcerativa en comparación a controles. Materiales y métodos: Se usó inmunohistoquímica para identificar a las células neuroendócrinas a través del marcador cromogranina A. El estudio incluyó 10 casos de cada diagnóstico de colitis linfocítica, colitis colagenosa y colitis ulcerativa. Resultados: Se encontró diferencia estadísticamente significativa en el conteo de células neuroendocrinas en colitis linfocítica (p=0,019104) y colitis ulcerativa en comparación con los controles (p=0,0077). En colitis colagenosa, se encontró un incremento de células neuroendocrinas pero no pudimos demostrar diferencias estadísticamente significativa. Conclusión: Se demostró hiperplasia de células neuroendocrinas en colitis linfocítica y colitis ulcerativa, lo que confirma lo reportado por los pocos estudios anteriores realizados sobre el tema.

Introduction: Some authors have found increase of neuroendocrine cells in microscopic colitis and ulcerative colitis. Objective: The aim of this study is to evaluate the presence of neuroendocrine cells in ulcerative colitis and lymphocytic colitis and collagenous colitis. Materials and methods: Immunohistochemistry was performed to identify neuroendocrine cells through marker chromogranin A (CgA). The study included 10 cases of each diagnosis of Lymphocytic colitis, collagenous colitis and ulcerative colitis. Results: There was statistically significant difference in the count of neuroendocrine cells, between lymphocytic colitis and control (p=0.019104), and between ulcerative colitis and controls (p=0.0077). In collagenous colitis there was an increase in neuroendocrine cells but we failed to find statistical differences. Conclusion: We could observe neuroendocrine cell hyperplasia in lymphocytic colitis and ulcerative colitis compared with controls, which confirm previous studies.

Pólipos gástricos: experiencia en el hospital Daniel Alcides Carrión - Callao 2014-2016 / Gastric polyps: experience in Daniel Alcides Carrion Hospital 2014-2016

Objetivos: El propósito de este estudio fue determinar la prevalencia y las características endoscópicas e histopatológicas de los distintos tipos de pólipos gástricos en el Hospital Daniel Alcides Carrión entre los años 2014-2016. Materiales y métodos: Se revisó 7559 reportes endoscópicos, donde se encontró 148 pólipos gástricos y se consignó datos de edad, sexo, localización, número de lesiones, tamaño, y aspectos macroscópicos y microscópicos de la lesión. Resultados: La prevalencia de pólipos gástricos fue 1,9%; el 74,3% de estos se presentaron en mujeres donde la edad promedio fue de 61,5 años. El 59,46% de los pólipos gástricos fueron únicos, la mayoría localizándose en el antro y cuerpo del estómago. El 74,29% de pólipos fueron menores de 1 cm en diámetro y el 83,64% tenían un aspecto macroscópico sésil. Con respecto al tipo histológico, se encontró que la mayoría de los pólipos gástricos en esta población son hiperplásicos (76,4%), seguidos por los de glándulas fúndicas (17,5%) y la minoría fueron adenomas (6,1%). Cabe resaltar que los pólipos múltiples fueron en su gran mayoría de tipo de glándulas fúndicas mientras que en los demás tipos histológicos predominó el pólipo único. Conclusión: La prevalencia de pólipos de glándulas fúndicas ha aumentado, mientras los otros tipos de pólipos han mantenido su prevalencia esperada.

Objective: The purpose of this study was to determine the prevalence of the different types of gastric polyps in the Daniel Alcides Carrión Hospital between the years of 2014 and 2016, and also define the endoscopic and histopathological characteristics of the lesions. Materials and methods: 7559 endoscopic reports were reviewed, in which 148 gastric polyps were found. The patients' age and sex as well as the localization, number, size and macroscopic and microscopic aspects of the polyps were recorded. Results: The prevalence of gastric polyps was 1.9%; 74.3% of these were found in women with an average age of 61.5 years. 59.4% of the gastric polyps found were singular, and the majority were located on the body and antrum of the stomach. 74.29% of the polyps were less than 1 cm in diameter and 83.64% of these were sessile when seen macroscopically. According to the histological type, it was found that the majority of gastric polyps were hyperplasic (76.4%), followed by fundic gland polyps (17.5%) and gastric adenomas (6.1%). It was also found that multiple gastric polyps were associated with fundic gland polyps while singular polyps were most likely hyperplastic or adenomas. Conclusion: The prevalence of fundic gland polyps has increased, while the other types of polyps have maintained their estimated prevalence.

[Neuroendocrine hiperplasia in linfocitic and ulcerative colitis]. / Hiperplasia neuroendocrina en colitis linfocitica y colitis ulcerativa.

INTRODUCTION: Some authors have found increase of neuroendocrine cells in microscopic colitis and ulcerative colitis. OBJECTIVE: The aim of this study is to evaluate the presence of neuroendocrine cells in ulcerative colitis and lymphocytic colitis and collagenous colitis. MATERIALS AND METHODS: Immunohistochemistry was performed to identify neuroendocrine cells through marker chromogranin A (CgA). The study included 10 cases of each diagnosis of Lymphocytic colitis, collagenous colitis and ulcerative colitis. RESULTS: There was statistically significant difference in the count of neuroendocrine cells, between lymphocytic colitis and control (p=0.019104), and between ulcerative colitis and controls (p=0.0077). In collagenous colitis there was an increase in neuroendocrine cells but we failed to find statistical differences. CONCLUSION: We could observe neuroendocrine cell hyperplasia in lymphocytic colitis and ulcerative colitis compared with controls, which confirm previous studies.

[Heterotopic gastric mucosa in duodenum: endoscopic and histological features]. / Mucosa gástrica heterotópica en duodeno: características clínicas endoscópicas e histológicas.

OBJECTIVE: The aim of this study was characterized sin duodenum the heterotopic gastric mucosa. MATERIALS AND METHODS: The slides with the diagnosis of heterotopic gastric mucosa during 2014-2015, were reviewed, and clinical, histological and endoscopic data was to collected for every case. RESULTS: 45 cases of heterotopic gastric mucosa in duodenum were found, 91.1% were located in duodenum bulb and 73.2%, presenting as polyps in 73.2% of cases. In all cases, parietal cell was identified as main criteria for the diagnosis. Neither Helicobacter pylori nor dysplasia were identified. CONCLUSIONS: Our data confirm its non neoplastic nature. Heterotopic gastric mucosa should be taken into account in diagnosis of duodenal polyps. Parietal cells identification in duodenal mucosa is essential in differential diagnosis with peptic duodenitis.

Localización y tamaño de los adenomas del colon como factores asociados a displasia de alto grado / Localization and size of colon adenomas as factors related to high grade dysplasia

Objetivo: Determinar si la localización y el tamaño de los adenomas de colon se asocian con la presencia de displasia de alto grado en los pacientes de un hospital peruano. Materiales y Métodos: Se realizó un estudio trasversal mediante la revisión de informes de colonoscopías de los años 2014-2015 del Hospital Nacional Daniel Alcides Carrión, incluyéndose los pólipos de pacientes mayores de 18 años; y excluyéndose los de pacientes con cáncer de colon, antecedente de cirugía oncológica, enfermedad inflamatoria intestinal y poliposis (6 o más). Se extrajeron los datos de localización (colon proximal y distal, división a partir del ángulo esplénico), tamaño (menos de 10 mm y 10 mm o más), forma (pediculados y sésiles) y grado de displasia (bajo y alto grado). Se calculó la fuerza de asociación mediante OR, se determinó si existía asociación a través de la prueba Chi cuadrado, con nivel de significancia menor a 0,05. Resultados: De un total de 1710 informes de colonoscopías revisadas, 378 personas tuvieron pólipos, calculando una tasa de detección de adenomas de 22,1%. De los 458 pólipos encontrados 254 fueron adenomas. Se demostró una asociación significativa entre la localización en colon distal y displasia de alto grado (OR 2,68 IC 1,12-6,42, p<0.05); asimismo, los adenomas mayores o iguales a 10 mm tuvieron más riesgo de displasia de alto grado (OR 7,75 IC 3,05-19,69, p<0.05). No se encontró asociación entre la forma de los adenomas y grado de displasia. Conclusión: Se concluye que el tamaño de 10 mm o más y la localización en colon distal se asocian a displasia de alto grado en los adenomas.

Objective: To determine whether localization and size are related to the presence of high-grade dysplasia of colon adenomas in patients of a Peruvian hospital. Materials and methods: This is a descriptive transversal study. We checked colonoscopy reports of 2014-2015 years of Hospital Daniel Alcides Carrion, we included the polyps found in patients older than 18 years old, and excluded reports from patients with colorectal cancer, an antecedent of oncological surgery, inflammatory bowel disease and polyposis (6 or more). We used data based on localization (proximal and distal colon, based on the splenic angle), size (less than 10 mm and 10 mm or more), shape (pediculate and sessile) and grade of dysplasia (low and high-grade). We calculated the strength of association by OR, and we determined whether there was association by Chi-square test with a significance value less than 0.05. Results: We reviewed a total of 1710 of colonoscopy reports, 378 patients had polyps, so the adenoma detection rate was 22.1%. There were 458 polyps, from which 254 were adenomas. From these adenomas, we found an association between distal colon localization and high-grade dysplasia (OR 2.68 IC 1.12-6.42, p<0.05); likewise, there was an association between the size of the adenomas and high-grade dysplasia (OR 7.75 IC 3.05-19.69, p<0.05). We did not find any association between the shape and grade of dysplasia. Conclusion: This study concludes that there is an association between the size of 10 mm or more and localization in the distal colon with high-grade dysplasia of adenomas.

Coexistencia de colitis linfocítica y enteritis microscópica en pacientes con diarrea crónica / Concurrent lymphocytic colitis and microscopic enteritis in patients with chronic diarrhea

Introducción: Colitis linfocítica y enteritis microscópica son causas relativamente comunes de diarrea crónica y ambas se caracterizan por un infiltrado linfocitico intraepitelial. No existen reportes previos de la coexistencia de ambas entidades. Objetivo: Describir las características clínicas e histológicas de los pacientes que presentan este diagnóstico simultáneamente. Material y métodos: Se seleccionaron pacientes adultos con diarrea crónica que tuvieran biopsia simultánea de colon y duodeno tomados el mismo día, durante los años 2010-2016, en el Servicio de Gastroenterología del Hospital Nacional Daniel Alcides Carrión. Se recopiló información clínica del archivo de historias. Las láminas fueron reevaluadas histológicamente por 3 patólogos. Se realizó estudio inmunohistoquímico de linfocitos intraepiteliales para CD8 y CD3 en 6 casos. Resultados: De 63 pacientes con diarrea crónica y biopsia simultánea de duodeno y colon, se identificó un total de 35 pacientes (55,5%) con diagnóstico simultáneo de enteritis microscópica y colitis linfocítica, 80% fueron mujeres. Se identificó anemia en 28,5% de los pacientes e infestación por Blastocystis hominis en el 31,8.%. En enteritis microscópica, el promedio de linfocitos intraepiteliales con CD8 y CD3 fue 40%, mientras que, en colitis linfocítica, el promedio fue de 37,2% para CD3 y 29,2% para CD8. En 11 de los 35 casos, se pudo obtener biopsias de íleon que fueron diagnosticadas como ileitis linfocítica. En 9 casos se diagnosticó colitis eosinofílica asociada a colitis linfocítica. Conclusión: Se encontró coexistencia de colitis linfocítica, enteritis microscópica y en algunos de ileitis linfocítica en un 55,5% pacientes con diarrea crónica con biopsia duodenal y colónica. Estos resultados abren la interrogante sobre si colitis linfocítica y enteritis microscópica son entidades diferentes o constituyen una sola patología que en algunos pacientes afecta varios segmentos del tubo digestivo.

Introduction: Lymphocytic colitis and microscopic enteritis are relatively common causes of chronic diarrhea and it is characterized by an intraepithelial lymphocytic infiltrate. There have been no previous reports of coexistence between these 2 pathologies. Objective: To describe histological and clinical characteristic in patients with coexistence of lymphocytic colitis and microscopic enteritis. Material and methods: All cases with simultaneous diagnosis of lymphocytic duodenosis and lymphocytic colitis were reevaluated during lapse time 2010-2016 in hospital Daniel Carrion. The slides were reviewed by 3 pathologists and clinical information was obtained from clinical records. Expression of CD3 and CD8 was detected in 6 cases by immunohistochemical assays. Results: A total of 35 patients with coexistence of lymphocytic duodenitis and lymphocytic colitis were selected of the pathology archives, 80% were females, Anemia was identified in 28.5% of patients. Blastocysitis hominis infestation was identified in 31.8%. The mean intraepithelial lymphocyte CD8 and CD3 positive was 40% in microscopic enteritis, while the mean intraepithelial lymphocyte CD3 positive was 37.2% and CD8 positive was 29.2% Additionally, lymphocytic ileitis was diagnosed in 11 of our cases. Eosinophilic colitis was diagnosed in 9 cases of lymphocytic colitis Conclusion: We found that lymphocytic colitis, microscopic enteritis and even lymphocytic ileitis can coexist in a group of patients with chronic diarrhea. These findings bring the question if this concurrence of both pathologies constituted a more generalized gastrointestinal disorder, involving both the large and the small intestines.

Prevalencia de hepatitis B y C en el banco de sangre de un hospital en Callao, Perú / Hepatitis B and C prevalence in a blood bank at general hospital in Callao, Peru

Objetivo: El objetivo del presente estudio fue determinar la prevalencia de seropositividad para HBsAg, Anti-HBcAg y Anti- HVC del Banco de Sangre del Hospital Nacional Daniel Alcides Carrión (HNDAC) durante el periodo 2010 al 2012. Materiales y métodos: Estudio transversal retrospectivo. Se incluyó a los potenciales donadores. Se recolectaron las características tales como edad, sexo y conductas de riesgo. Se realizó el análisis descriptivo con el programa STATA 14. Resultados: Se incluyó 13 887 potenciales donantes del HNDAC entre enero 2010 y diciembre 2012. Se identificaron 897 potenciales donantes positivos. La prevalencia de HBsAg fue 0,55%; Anti-HBcAg, 5,15%; y Anti-HVC, 1,25%. De ellos se encontró edad promedio de 37,4 años para los pacientes infectados por virus de hepatitis B y de 36,9 para los pacientes infectados por virus de hepatitis C, 31,2% fueron mujeres del total de infectados. Conclusión: La prevalencia de serología positiva para virus de hepatitis B fue similar a reportes anteriores, por otro lado la serología positiva para virus de hepatitis C fue mayor a lo reportado en nuestro país

ABSTRACT Objective: The aim of the present study was to determine the prevalence of sero positivity for HBsAg, Anti-HBcAg and Anti- HVC in the blood bank of Hospital Daniel Carrion during the period 2010 - 2012. Materials and methods: Retrospective cross-sectional study. Potential donors who met the inclusion criteria were included. Sociodemographic factors, risk behaviors were gathered. A descriptive analysis was performed with STATA 14. Results: 13,887 potential blood donors of the HNDAC between January 2010 and December 2012 were identified. The population's mean was 37 years, 32% were women. 897 potential positive blood donors were identified. The prevalence of HBsAg was 0.55%; Anti-HBcAg, 5.15%; and Anti-HVC, 1.25%. Conclusion: The prevalence of positive serology for HBsAg was similar to the previous reports and Anti-HVC was higher than the prevalence reported in our country

Mucosa gástrica heterotópica en duodeno: características clínicas endoscópicas e histológicas / Heterotopic gastric mucosa in duodenum: endoscopic and histological features

Objetivo: Caracterizar la mucosa gástrica heterotópica en duodeno en nuestro medio. Materiales y métodos: Se seleccionaron dos instituciones, los casos de mucosa gástrica heterotópica que cumplieran los criterios histológicos establecidos para el diagnóstico durante los años 2014-2015. Las láminas con el diagnóstico de mucosa gástrica heterotópica en duodeno fueron revisadas por 3 patólogos, se recolectó información clínica, endoscópica e histológica en cada caso. Resultados: Se encontraron 45 casos de mucosa gástrica heterotópica en duodeno, 91,1% se localizaron en bulbo duodenal y 73,2% se presentaron endoscópicamente como pólipos. En todos los casos se identificó células parietales como criterio para hacer el diagnóstico histopatológico, en ningún caso se identificó Helicobacter pylori ni displasia en la biopsia duodenal. Conclusiones: Nuestros datos confirman su naturaleza benigna. El diagnóstico de mucosa gástrica heterotópica, aunque infrecuente, debe tenerse en cuenta en el estudio de pólipos duodenales, siendo la identificación de células parietales en mucosa duodenal fundamental para el diagnóstico diferencial histológico especialmente con la metaplasia gástrica de duodenitis péptica

Objective: The aim of this study was characterized sin duodenum the heterotopic gastric mucosa. Materials and methods: The slides with the diagnosis of heterotopic gastric mucosa during 2014-2015, were reviewed, and clinical, histological and endoscopic data was to collected for every case. Results: 45 cases of heterotopic gastric mucosa in duodenum were found, 91.1% were located in duodenum bulb and 73.2%, presenting as polyps in 73.2% of cases. In all cases, parietal cell was identified as main criteria for the diagnosis. Neither Helicobacter pylori nor dysplasia were identified. Conclusions: Our data confirm its non neoplastic nature. Heterotopic gastric mucosa should be taken into account in diagnosis of duodenal polyps. Parietal cells identification in duodenal mucosa is essential in differential diagnosis with peptic duodenitis

[Localization and size of colon adenomas as factors related to high gradedysplasia]. / Localización y tamaño de los adenomas del colon como factoresasociados a displasia de alto grado.

OBJECTIVE: To determine whether localization and size are related to the presence of high-grade dysplasia of colon adenomas in patients of a Peruvian hospital. MATERIALS AND METHODS: This is a descriptive transversal study. We checked colonoscopyreports of 2014-2015 years of Hospital Daniel Alcides Carrion, we included the polyps found in patients older than 18 years old, and excluded reports from patients with colorectal cancer, an antecedent of oncological surgery, inflammatory bowel disease and polyposis (6 or more). We used data based on localization (proximal and distal colon, based on the splenic angle), size (less than 10 mm and 10 mm or more), shape (pediculate and sessile) and grade of dysplasia (low and high-grade). We calculated the strength of association by OR, and we determined whether there was association by Chi-square test with a significance value less than 0.05. RESULTS: We reviewed a total of 1710 of colonoscopy reports, 378 patients had polyps, so the adenoma detection rate was 22.1%. There were 458 polyps, from which 254 were adenomas. From these adenomas, we found an association between distal colon localization and high-grade dysplasia (OR 2.68 IC 1.12-6.42, p < 0.05); likewise, there was an association between the size of the adenomas and high-grade dysplasia (OR 7.75 IC 3.05-19.69, p<0.05). We did not find any association between the shape and grade of dysplasia. CONCLUSION: This study concludes that there is an association between the size of 10 mm or more and localization in the distal colon with high-grade dysplasia of adenomas.

[Hepatitis B and C prevalence in a blood bank at general hospital in Callao, Peru]. / Prevalencia de hepatitis B y C en el banco de sangre de un hospital enCallao, Perú.

OBJECTIVE: The aim of the present study was to determine the prevalence of sero positivity for HBsAg, Anti-HBcAg and AntiHVC in the blood bank of Hospital Daniel Carrion during the period 2010 - 2012. MATERIALS AND METHODS: Retrospective cross-sectional study. Potential donors who met the inclusion criteria were included. Sociodemographic factors, risk behaviors were gathered. A descriptive analysis was performed with STATA 14. RESULTS: 13,887 potential blood donors of the HNDAC between January 2010 and December 2012 were identified. The population's mean was 37 years, 32% were women. 897 potential positive blood donors were identified. The prevalence of HBsAg was 0.55%; Anti-HBcAg, 5.15%; and Anti-HVC, 1.25%. CONCLUSION: The prevalence of positive serology for HBsAg was similar to the previous reports and Anti-HVC was higher than the prevalence reported in our country.

[Concurrent lymphocytic colitis and microscopic enteritis in patients with chronic diarrhea]. / Coexistencia de colitis linfocítica y enteritis microscópica en pacientes con diarrea crónica.

INTRODUCTION: Lymphocytic colitis and microscopic enteritis are relatively common causes of chronic diarrhea and it is characterized by an intraepithelial lymphocytic infiltrate. There have been no previous reports of coexistence between these 2 pathologies. OBJECTIVE: To describe histological and clinical characteristic in patients with coexistence of lymphocytic colitis and microscopic enteritis. MATERIAL AND METHODS: All cases with simultaneous diagnosis of lymphocytic duodenosis and lymphocytic colitis were reevaluated during lapse time 2010-2016 in hospital Daniel Carrion. The slides were reviewed by 3 pathologists and clinical information was obtained from clinical records. Expression of CD3 and CD8 was detected in 6 cases by immunohistochemical assays. RESULTS: A total of 35 patients with coexistence of lymphocytic duodenitis and lymphocytic colitis were selected of the pathology archives, 80% were females, Anemia was identified in 28.5% of patients. Blastocysitis hominis infestation was identified in 31.8%. The mean intraepithelial lymphocyte CD8 and CD3 positive was 40% in microscopic enteritis, while the mean intraepithelial lymphocyte CD3 positive was 37.2% and CD8 positive was 29.2% Additionally, lymphocytic ileitis was diagnosed in 11 of our cases. Eosinophilic colitis was diagnosed in 9 cases of lymphocytic colitis Conclusion: We found that lymphocytic colitis, microscopic enteritis and even lymphocytic ileitis can coexist in a group of patients with chronic diarrhea. These findings bring the question if this concurrence of both pathologies constituted a more generalized gastrointestinal disorder, involving both the large and the small intestines.

Violencia laboral externa tipo amenaza contra médicos en servicios hospitalarios de Lima Metropolitana, Perú 2014 / External workplace violence against doctors in hospital services in Lima Metropolitana, Peru 2014

RESUMEN Objetivos . Estimar la frecuencia y los factores asociados a la violencia laboral externa tipo amenaza (VLETA) contra médicos en servicios de salud hospitalarios de Lima Metropolitana, Perú. Materiales y Métodos Se desarrolló un estudio transversal analítico que incluyó médicos del Ministerio de Salud (MINSA), la Seguridad Social (EsSalud) y el subsector privado. Se midió la frecuencia de VLETA durante toda la práctica profesional, en los últimos doce meses y en el último mes. Se midieron variables relacionadas al médico, al agresor y al servicio de salud. Se estimaron razones de prevalencia (RPs) cruda y ajustada mediante un modelo lineal generalizado familia Poisson con bootstrap no paramétrico. Resultados . Participaron 406 médicos. El 31,5% fueron víctimas de VLETA al menos una vez durante su práctica profesional; 19,9% en los últimos doces meses y 7,6% en el último mes. La probabilidad de ser amenazado en los últimos doce meses aumentó si el médico era varón (RPa:1,7;IC95%:1,1-2,8), egresado de una universidad peruana fuera de Lima Metropolitana (RPa:1,5; IC95%:1,1-2,4), laboraba en MINSA (RPa:7,9;IC95%:2,24-50,73) o en EsSalud (RPa:8,68; IC95%:2,26-56,17), y atendía en emergencia (RPa:1,9;IC95%:1,2-3,6) o en sala de operaciones (RPa:1,6 IC95%:1,1-2,3). La edad, los años de práctica profesional o ser médico residente no se asociaron a VLETA. Conclusiones . En los hospitales estudiados, una alta proporción de médicos ha sido víctima de VLETA. Laborar en servicios públicos aumenta dicha probabilidad. Se sugiere implementar estrategias de prevención primaria, identificación y soporte en los establecimientos hospitalarios.

ABSTRACT Objectives . To calculate the frequency and factors associated with external workplace violence (EWV) against doctors in health inpatient services in the metropolitan area of Lima (Spanish: Lima Metropolitana), Peru. Materials and methods . A cross-sectional analytic study, which included doctors from the Ministry of Health (MINSA), Social Security (EsSalud), and the private subsector, was carried out. The frequency of EWV was measured throughout the entire professional practice during the previous 12 months and during the last month. Variables related to the doctor, assailant, and health service were measured. Raw and adjusted prevalence ratios (PR) were calculated by means of a Poisson-family generalized linear model with non-parametric bootstrapping. Results . A total of 406 doctors participated; 31.5% were victims of EWV at least once during their professional practice, with 19.9% over the past 12 months and 7.6% during the last month. The chances of being threatened in the last 12 months increased if the doctor was male (adjusted PR [aPR]: 1.7; 95% confidence interval [CI] = 1.1- 2.8), had graduated from a Peruvian university outside of the metropolitan area of Lima (aPR: 1.5; 95% CI = 1.1-2.4), worked at MINSA (aPR: 7.9; 95% CI = 2.24-50.73) or EsSalud (RR: 8.68; 95% CI = 2.26-56.17), and worked in the emergency (aPR: 1.9; 95% CI = 1.2-3.6) or operating room (aPR: 1.6; 95% CI = 1.1-2.3). Age, years of professional practice, or being a medical resident were not associated with EWV. Conclusion . In the hospitals studied, a large number of doctors have been victims of EWV. Working in public services increases the possibility of violence. Implementation of support, identification, and primary prevention strategies in hospitals is recommended.

[Celiac disease and negative serology villous atrophy: histological comparison and immunohistochemical study of CD3, CD4, CD8 and CD56 lymphocytes]. / Enfermedad celíaca vs. atrofia villositaria serológicamente negativa: similitudes y diferencias histológicas y en el perfil inmunohistoquímico de linfocitos CD3, CD4, CD8 y CD56.

UNLABELLED: There is a group of enteropathies recently known as seronegative villous atrophy (SNVA), which can simulate celiac disease. OBJECTIVE: The aim of this study was to describe histological and immunohistochemical differences between a group of Celiac disease and SNVA patients. MATERIAL AND METHODS: Microscopy reexamination and Immunohistochemistry study were performed for a group of 15 celiac patients and 19 SNVA patients. Histological features as severe atrophy, crypt hyperplasia, plasma cells number, eosinophils number, neutrophils presence were studied; CD4, CD8, CD3, and CD56 markers were studied through immunohistochemistry. RESULTS: There was a significant difference between the frequency of observation of crypt hyperplasia (p=0.0348) and plasma cells (p=0.0348) in celiac disease patients than SNVA patients. In celiac disease was bigger. The number and distribution of CD 8, CD4 and CD56 lymphocytes was similar in both groups. The percentage of CD3 positive intraepithelial lymphocytes (p=0.0144) was higher in SNVA. CONCLUSION: Histological and immunohistochemical evaluation shows more similarities than differences. The differences found in this study suggest more humoral immune response in celiac disease than in SNVA.

Enfermedad celíaca vs. atrofia villositaria serológicamente negativa: similitudes y diferencias histológicas y en el perfil inmunohistoquímico de linfocitos CD3, CD4, CD8 y CD56 / Celiac disease and negative serology villous atrophy: histological comparison and immunohistochemical study of CD3, CD4, CD8 and CD56 lymphocytes

Existe un grupo de enteropatía conocidas como AVSN que pueden simular enfermedad celíaca. Objetivo: El objetivo de este estudio es describir los hallazgos histológicos y de inmunohistoquímica en pacientes con enfermedad celíaca y AVSN. Material y métodos: 15 biopsias de pacientes con enfermedad celíaca y 19 biopsias con AVSN fueron reexaminados. Se estudió características histológicas tales como atrofia severa, hiperplasia de criptas, número de células plasmáticas, número de eosinófilos y presencia de neutrófilos. Asimismo, a través de inmunohistoquímica se estudió la presencia de linfocitos CD4, CD8, CD3, CD56. Resultados: Se encontró diferencia significativa en la mayor presencia de hiperplasia de criptas (p=0,0348) y mayor número de células plasmáticas (p=0,0348) en las biopsias de enfermedad celíaca que en las catalogadas como AVSN. El número de linfocitos CD8, CD4, CD56 y su distribución fue similar en ambos grupos. El porcentaje de linfocitos intraepiteliales CD3 positivos (p=0,0144) fue mayor en pacientes con AVSN. Conclusión: Los hallazgos histológicos e inmunohistoquímicos muestran más similitudes que diferencias. La diferencia hallada en nuestro estudio sugiere mayor respuesta inmune humoral en pacientes con enfermedad celiaca que en AVSN...

There is a group of enteropathies recently known as seronegative villous atrophy (SNVA), which can simulate celiac disease. Objective: The aim of this study was to describe histological and immunohistochemical differences between a group of Celiac disease and SNVA patients. Material and methods: Microscopy reexamination and Immunohistochemistry study were performed for a group of 15 celiac patients and 19 SNVA patients. Histological features as severe atrophy, crypt hyperplasia, plasma cells number, eosinophils number, neutrophils presence were studied; CD4, CD8, CD3, and CD56 markers were studied through immunohistochemistry. Results: There was a significant difference between the frequency of observation of crypt hyperplasia (p=0.0348) and plasma cells (p=0.0348) in celiac disease patients than SNVA patients. In celiac disease was bigger. The number and distribution of CD 8, CD4 and CD56 lymphocytes was similar in both groups. The percentage of CD3 positive intraepithelial lymphocytes (p=0.0144) was higher in SNVA. Conclusion: Histological and immunohistochemical evaluation shows more similarities than differences. The differences found in this study suggest more humoral immune response in celiac disease than in SNVA...

[External workplace violence against doctors in hospital services in Lima Metropolitana, Peru 2014]. / Violencia laboral externa tipo amenaza contra médicos en servicios hospitalarios de Lima Metropolitana, Perú 2014.

OBJECTIVES: . To calculate the frequency and factors associated with external workplace violence (EWV) against doctors in health inpatient services in the metropolitan area of Lima (Spanish: Lima Metropolitana), Peru. MATERIALS AND METHODS: . A cross-sectional analytic study, which included doctors from the Ministry of Health (MINSA), Social Security (EsSalud), and the private subsector, was carried out. The frequency of EWV was measured throughout the entire professional practice during the previous 12 months and during the last month. Variables related to the doctor, assailant, and health service were measured. Raw and adjusted prevalence ratios (PR) were calculated by means of a Poisson-family generalized linear model with non-parametric bootstrapping. RESULTS: . A total of 406 doctors participated; 31.5% were victims of EWV at least once during their professional practice, with 19.9% over the past 12 months and 7.6% during the last month. The chances of being threatened in the last 12 months increased if the doctor was male (adjusted PR [aPR]: 1.7; 95% confidence interval [CI] = 1.1- 2.8), had graduated from a Peruvian university outside of the metropolitan area of Lima (aPR: 1.5; 95% CI = 1.1-2.4), worked at MINSA (aPR: 7.9; 95% CI = 2.24-50.73) or EsSalud (RR: 8.68; 95% CI = 2.26-56.17), and worked in the emergency (aPR: 1.9; 95% CI = 1.2-3.6) or operating room (aPR: 1.6; 95% CI = 1.1-2.3). Age, years of professional practice, or being a medical resident were not associated with EWV. CONCLUSION: . In the hospitals studied, a large number of doctors have been victims of EWV. Working in public services increases the possibility of violence. Implementation of support, identification, and primary prevention strategies in hospitals is recommended.