Correlation between proximal serrated polyp detection and clinically significant serrated polyps: inter-endoscopist variability.

INTRODUCTION AND AIMS: The adenoma detection rate (ADR) is the most important quality indicator for the prevention of colorectal cancer but serrated polyps are also precursor lesions of the disease. The aim of our study was to compare the detection rate of proximal serrated polyps (PSPs) and that of clinically significant serrated polyps (CSSPs) between endoscopists and analyze the relation of those parameters to the ADR. METHODS: An observational, prospective, cross-sectional study was conducted on all patients that underwent colonoscopy at the Policlínico Peruano Japonés within the time frame of July 2015 and August 2016. The ADR and PSP and CSSP detection rates between endoscopists were compared through multivariate logistic regression and the association between those parameters was calculated through the Pearson correlation coefficient. RESULTS: The study included 15 endoscopists and 1,378 colonoscopies. The PSP detection rate ranged from 1.8-17% between endoscopists and had an almost perfect correlation with the CSSP detection rate (p = 0.922), as well as strongly correlating with the ADR (p = 0.769). CONCLUSIONS: There was great variability in the PSP detection rate between endoscopists. It also had an almost perfect correlation with the CSSP detection rate and strongly correlated with the ADR. Those results suggest a high CSSP miss rate at endoscopy and a low PSP detection rate.

Correlation between proximal serrated polyp detection and clinically significant serrated polyps: inter-endoscopist variability. / Correlación entre la detección de pólipos serratos proximales y pólipos serratos clínicamente significativos: variabilidad interendoscopista.

INTRODUCTION AND AIMS: The adenoma detection rate (ADR) is the most important quality indicator for the prevention of colorectal cancer but serrated polyps are also precursor lesions of the disease. The aim of our study was to compare the detection rate of proximal serrated polyps (PSPs) and that of clinically significant serrated polyps (CSSPs) between endoscopists and analyze the relation of those parameters to the ADR. METHODS: An observational, prospective, cross-sectional study was conducted on all patients that underwent colonoscopy at the Policlínico Peruano Japonés within the time frame of July 2015 and August 2016. The ADR and PSP and CSSP detection rates between endoscopists were compared through multivariate logistic regression and the association between those parameters was calculated through the Pearson correlation coefficient. RESULTS: The study included 15 endoscopists and 1,378 colonoscopies. The PSP detection rate ranged from 1.8-17% between endoscopists and had an almost perfect correlation with the CSSP detection rate (p = 0.922), as well as strongly correlating with the ADR (p = 0.769). CONCLUSIONS: There was great variability in the PSP detection rate between endoscopists. It also had an almost perfect correlation with the CSSP detection rate and strongly correlated with the ADR. Those results suggest a high CSSP miss rate at endoscopy and a low PSP detection rate.

Factors related to advanced colorectal neoplasm at the Policlínico Peruano Japonés.

BACKGROUND: Identifying persons at high risk for advanced colorectal neoplasia can aid in the prevention of colon cancer. Previous studies have shown that some patients can present with proximal advanced neoplasia with no distal findings. AIMS: To determine the factors related to advanced neoplasia and advanced proximal colorectal neoplasia in a Latin American population. MATERIAL AND METHODS: A prospective, cross-sectional, observational, analytic study was conducted. It included patients that underwent colonoscopy at the Policlínico Peruano Japonés within the time frame of January and July 2012. Advanced neoplasia was defined as the presence of lesions ≥ 10mm with a villous component, high-grade dysplasia, or carcinoma. The splenic flexure was the limit between the proximal and distal colon. RESULTS: A total of 846 patients were included in the study. Advanced neoplasia was detected in 108 patients (12.8%) and advanced proximal neoplasia in 55 patients (6.7%), 42 (76.4%) of whom had no neoplasia in the distal colon. Factors related to advanced neoplasia found in the multivariate analysis were age, at the intervals of 50-59 (p=0.019), 60-69 (p=0.016), and ≥ 70 years (0.002) and male sex (p=0.003). In the evaluation of advanced proximal neoplasia, the multivariate analysis identified the 60-69 year age interval (p=0.039) and advanced distal neoplasia (p=0.028) as factors related to advanced proximal disease. The ROC curve established the age cut-off point at 60 years for initially performing colonoscopy, rather than sigmoidoscopy. CONCLUSIONS: Age and sex are related to advanced neoplasia, whereas age and advanced distal neoplasia are related to advanced proximal neoplasia.

[Choledocolithiasis predictors in high-risk population subjected to endoscopic retrograde pancreatocholangiography at "Hospital Nacional Arzobispo Loayza"]. / Predictores de coledocolitiasis en población de alto riesgo sometida a pancreatocolangiografía retrógrada endoscópica en el Hospital Arzobispo Loayza.

INTRODUCTION: The choledocholithiasis is a frequent complication of gallstone disease. The endoscopic retrograde cholangiopancreatography (ERCP) is suitable for its diagnosis and treatment. That approach has both significative morbility and mortality so others methods of diagnosis have been proposed such as intraoperatorycholangiography (IOC) and magnetic resonance cholangiography (MRC), reserving ERCP only for therapy purpose. OBJECTIVES: Verify the utility of choledocholithiasis predictors described in literature MATERIAL AND METHODS: This study is a correlational observational transversal prospective approach. It was performed at the Arzobispo Loayza Hospital from August 2004 to January 2005. Many clinical, biochemical and ecographyc predictors of choledocholithiasis were analyzed in 151 patient underwent to ERCP. In all peopleunder study and analyzing separately patients underwent to cholecystectomy or not previous to ERCP, it was identified some risk factors for choledocholithiasis by means of both univariate and multivariate analysis. RESULTS: The univariate analysis showed a relationships among age, icterus, cholangytis, direct bilirrubin, amylase, lactic deshidrogenasa, ductal dilatation (>8 mm) and choledocholithiasis. In all groups, the multivariate analysis determined that ductal dilatation by ecography was the unique predictor for choledocholithiasis in the group of patients postoperated. CONCLUSIONS: None single indicator was able to predict with accuracy the choledocholithiasis. However, the parameters described in the literature are useful in our country.

Predictores de coledocolitiasis en población de alto riesgo sometida a pancreatocolangiografía retrógrada endoscópica en el Hospital Arzobispo Loayza / Predicting of choledocholithiasis in population of high risk submissive an endoscopic retrograde cholangiopancreatography in yhe Hospital Arzobispo Loayza

Introducción: La coledocolitiasis es una complicación frecuente de la litiasis vesicular. La pancreatocolangiografía retrógrada endoscópica (PCRE) es el "gold Standard" para su diagnóstico y tratamiento, sin embargo debido a su significativa morbilidad y mortalidad, otros métodos diagnósticos han sido planteados, tales como la colangiografía intraoperatoria (CIO) y la colangioresonancia (CRMN), reservado a la PCRE sólo para fines terapéuticos. Objetivo: Verificar la utilidad de los predoctores de coledocolitiasis descritos en la literatura. Material y Método: Estudio correlacional, observacional, transversal prospectivo que se realizó entre agosto del 2004 y enero del 2005 en el Hospital Arzobispo Loayza. Conocidos criterios clínicos, bioquímicos y ecográficos predictores de coledocolitiasis fueron analizados en 151 pacientes sometidos a PCRE. Usando análisis univariado y multivariado, se identificaron los factores de riesgo para coledocolitiasis, en el total de pacientes del estudio, así como en los pacientes colecistectomizados o no antes de la PCRE. Resultados: El análisis univariado en el total de pacientes encontró que la edad, ictericia, colangitis, biblirrubina directa, amilasa, deshidrogenada láctica (DHL), dilatación del colédoco (>8mm) y coledocolitiasis por ecografía, estuvieron asociados con coledocolitiasis. Cuando se evaluó por separado, el análisis multivariado en los tres grupos se encontró que sólo la dilatación del colédoco por ecografía fue el único predictor de coledocolitiasis en el grupo de pacientes post-operados. Conclusiones: Ningún indicador único es capaz de predecir, con total exactitud, la presencia de coledocolitiasis. Pero los parámetros descritos en la literatura, son de utilidad en nuestro medio.

Introducction: The choledocholithiasis is a frequent complication of gallstone disease. The endoscopic retrograde cholangiopancreatography (ERCP) is suitable for its diagnosis and treatment. That approach has both significative morbility and mortality so others methods of diagnosis have been proposed such as intraoperatorycholangiography (IOC) and magnetic resonance cholangiography (MRC), reserving ERCP only for therapy purpose.OBJETIVES: Verify the utility of choledocholithiasis predictors described in literature MATERIAL AND METHODS: This study is a correlational observational transversal prospective approach. It was performed at the Arzobispo Loayza Hospital from August 2004 to January 2005. Many clinical, biochemical and ecographyc predictorsof choledocholithiasis were analyzed in 151 patient underwent to ERCP. In all people under study and analyzing separately patients underwent to cholecystectomy or not previous to ERCP, it was identified some risk factors for choledocholithiasis by means of both univariate and multivariate analysis.RESULTS: The univariate analysis showed a relationships among age, icterus, cholangytis, direct bilirrubin, amylase, lactic deshidrogenasa, ductal dilatation (minor 8mm) and choledocholithiasis. In all groups, the multivariate analysis determined that ductal dilatation by ecography was the unique predictor for choledocholithiasisin the group of patients postoperated.CONCLUSIONS: None single indicator was able to predict with accuracy thecholedocholithiasis. However, the parameters described in the literature are useful in our country.