[Knowing an infrequent complication of endoscopic retrograde cholangiopancreatography]. / Conociendo una complicación poco frecuente de la colangiopancreatografía retrógrada endoscópica.

OBJECTIVE: Describe the clinical and tomographic characteristics in relation to the extra peritoneal distribution of collections and air in patients with periampullary perforation after performing endoscopic retrograde cholangiopancreatography (ERCP) with or without sphincterotomy. MATERIALS AND METHODS: Observational, descriptive study in patients with periampullary perforation after ERCP with or without sphincterotomy, treated in the Pancreas Surgery Service at Edgardo Rebagliati Martins Hospital, Lima, Peru between January 2013 and January 2015. RESULTS: Ten patients with periampullary perforation after ERCP were included. 40% were male. The mean age was 47.2 years. 100% showed abdominal pain, fever 70%, 60% had jaundice, oral intolerance and vomiting. In 100% of cases the description of the procedure was for choledocolithiasis. Difficult cannulation is described in 80% of cases. Air or fluid was found in 90% in the right anterior pararenal space and the right perirenal, and the place where air or liquid is distributed less frequently was right extraperitoneal pelvis with 20%, in no caserevealed air in the mediastinum. CONCLUSIONS: The finding of a liquid collection and / or air in the retroperitoneal space right after ERCP without further involvement of the pancreatic gland should make us think of periampullary perforation, especially if you are in the right anterior pararenal space and perirenal space. This entity we call bilioretroperitoneo.

Combining visual rating scales to identify prodromal Alzheimer's disease and Alzheimer's disease dementia in a population from a low and middle-income country.

Background: Many low- and middle-income countries, including Latin America, lack access to biomarkers for the diagnosis of prodromal Alzheimer's Disease (AD; mild cognitive impairment due to AD) and AD dementia. MRI visual rating scales may serve as an ancillary diagnostic tool for identifying prodromal AD or AD in Latin America. We investigated the ability of brain MRI visual rating scales to distinguish between cognitively healthy controls, prodromal AD and AD. Methods: A cross-sectional study was conducted from a multidisciplinary neurology clinic in Lima, Peru using neuropsychological assessments, brain MRI and cerebrospinal fluid amyloid and tau levels. Medial temporal lobe atrophy (MTA), posterior atrophy (PA), white matter hyperintensity (WMH), and MTA+PA composite MRI scores were compared. Sensitivity, specificity, and area under the curve (AUC) were determined. Results: Fifty-three patients with prodromal AD, 69 with AD, and 63 cognitively healthy elderly individuals were enrolled. The median age was 75 (8) and 42.7% were men. Neither sex, mean age, nor years of education were significantly different between groups. The MTA was higher in patients with AD (p < 0.0001) compared with prodromal AD and controls, and MTA scores adjusted by age range (p < 0.0001) and PA scores (p < 0.0001) were each significantly associated with AD diagnosis (p < 0.0001) but not the WMH score (p=0.426). The MTA had better performance among ages <75 years (AUC 0.90 [0.85-0.95]), while adjusted MTA+PA scores performed better among ages>75 years (AUC 0.85 [0.79-0.92]). For AD diagnosis, MTA+PA had the best performance (AUC 1.00) for all age groups. Conclusions: Combining MTA and PA scores demonstrates greater discriminative ability to differentiate controls from prodromal AD and AD, highlighting the diagnostic value of visual rating scales in daily clinical practice, particularly in Latin America where access to advanced neuroimaging and CSF biomarkers is limited in the clinical setting.

Conociendo una complicación poco frecuente de la colangiopancreatografía retrógrada endoscópica / Knowing an infrequent complication of endoscopic retrograde cholangiopancreatography

Objetivo: Describir las características clínicas y tomográficas en relación a la distribución extra peritoneal de colecciones y aire seguida de perforación periampular luego de la realización de colangiopancreatografía retrograda endoscópica (CPRE) con o sin esfinterotomía. Materiales y métodos: Estudio observacional, descriptivo y transversal, en pacientes con perforación periampular, después de CPRE con o sin enfinterotomía, tratados en el Servicio de Cirugía de Páncreas del Hospital Edgardo Rebagliati Martins, Lima, Perú, entre enero del 2013 y enero del 2015. Resultados: Se incluyeron 10 pacientes con perforación periampular, después CPRE. El 40% fue de sexo masculino. La edad media fue de 47,2 años. El 100% presento dolor abdominal, el 70% fiebre, el 60% presentó ictericia, intolerancia oral y vómitos. En el 100% de los casos la indicación del procedimiento fue por litiasis coledociana. Se describe canulación difícil en el 80% de los casos. Se encontró aire o líquido en el 90% en los espacios pararrenal anterior derecho y el perirrenal derecho, y el lugar en donde se distribuyó el aire o liquido con menor frecuencia fue la pelvis extra peritoneal derecha con el 20%, en ningún caso se evidenció aire en el mediastino. Conclusiones: El hallazgo de una colección líquida y/o aire en el espacio retroperitoneal derecho, después de CPRE, sin mayor afección de la glándula pancreática, debe hacernos pensar en perforación periampular, sobre todo si se encuentra en el espacio pararrenal anterior derecho y el espacio perirrenal derecho. A esta entidad nosotros la hemos denominado bilioretroperitoneo.

Objective: Describe the clinical and tomographic characteristics in relation to the extra peritoneal distribution of collections and air in patients with periampullary perforation after performing endoscopic retrograde cholangiopancreatography (ERCP) with or without sphincterotomy. Materials and methods: Observational, descriptive study in patients with periampullary perforation after ERCP with or without sphincterotomy, treated in the Pancreas Surgery Service at Edgardo Rebagliati Martins Hospital, Lima, Peru between January 2013 and January 2015. Results: Ten patients with periampullary perforation after ERCP were included. 40% were male. The mean age was 47.2 years. 100% showed abdominal pain, fever 70%, 60% had jaundice, oral intolerance and vomiting. In 100% of cases the description of the procedure was for choledocolithiasis. Difficult cannulation is described in 80% of cases. Air or fluid was found in 90% in the right anterior pararenal space and the right perirenal, and the place where air or liquid is distributed less frequently was right extraperitoneal pelvis with 20%, in no case revealed air in the mediastinum. Conclusions: The finding of a liquid collection and / or air in the retroperitoneal space right after ERCP without further involvement of the pancreatic gland should make us think of periampullary perforation, especially if you are in the right anterior pararenal space and perirenal space. This entity we call bilioretroperitoneo.