Quistes epiteliales de páncreas en el Hospital General Docente Dr Agostinho Neto. Guantánamo 1990-2015 / Epithelial cysts of pancreas in Guantánamo 1990-2015

Se realizó un estudio descriptivo, ambipectivo, longitudinal sobre los quistes epiteliales del páncreas en la población guantanamera del Hospital General Docente Dr Agostinho Neto de Guantánamo durante 1990 al 2015, con el objetivo de caracterizar aspectos relacionados con los quistes epiteliales del páncreas en los pacientes egresados del Servicio de Cirugía General. Las variables analizadas fueron pacientes operados, no operados, grupos etarios, sexo, sintomatología, elemento clínico predominante, localización del tumor, tamaño del tumor, tipo histológico y técnica quirúrgica. Se destacó la presencia de pacientes operados con respecto a los no operados, y entre ellos las del sexo femenino. Se observa predominio de pacientes sintomáticos respecto a los asintomáticos. El elemento clínico predominante fue la epigastralgia en los tumores localizados en el cuerpo del páncreas. La técnica quirúrgica más empleada fue la pancreatectomía distal con esplenectomía(AU)

A descriptive, ambipective and longitudinal study was performed on the epithelial cysts of the pancreas in the Guantanamo population of the General Teaching Hospital Dr Agostinho Neto de Guantánamo during 1990 to 2015, with the objective of characterizing aspects related to the epithelial cysts of the pancreas in patients graduates of the General Surgery Service. The variables were analyzed: operated patients, non-operated, age groups, sex, symptomatology, predominant clinical element, tumor location, tumor size, histological type and surgical technique. The presence of operated patients with respect to the non-operated ones, and among them the female ones, was emphasized. There is a predominance of symptomatic patients compared to asymptomatic patients. The predominant clinical element was epigastralgia in tumors located in the body of the pancreas. The most commonly used surgical technique was distal pancreatectomy with splenectomy

Leaching of potential hazardous elements of coal cleaning rejects.

The geochemical characteristics of coal cleaning rejects (CCR) in Santa Catarina State, Brazil, were investigated. Around 3.5 million ton/year of coal waste are dumped in Santa Catarina State. Coal beneficiation by froth flotation results in large amounts of CCR composed of coaly and mineral matter, the latter characterised by the occurrence of sulphide minerals and a broad array of leachable elements. The total and leachable contents of more than 60 elements were analysed. Atmospheric exposure promotes sulphide oxidation that releases substantial sulphate loads as well as Ca2+, K+, Mg2+, Cl- and Al3+. The metals with the most severe discharges were Zn, Cu, Mn, Co, Ni and Cd. Most trace pollutants in the CCR displayed a marked pH-dependent solubility, being immobile in near-neutral samples. The results highlight the complex interactions among mineral matter solubility, pH and the leaching of potentially hazardous elements.