[Clinical and histological characteristics of adenopathies in paediatric patients].

Background: Lymphadenopathy is a common cause for medical consultation in the child population, accounting for up to 44% in children under 5 years old. In some cases, it is required to take lymph node biopsy specimens in order to clarify the diagnosis.

Objective: To describe the clinical and histological features of paediatric patients with lymphadenopathy and lymph node biopsies.

[Low-low synovial vascular malformation of the knee (hemangiolymphangioma) - Case report].

Introduction: Low-flow vascular malformation, which usually develops during the first stage of infancy, is a rare cause of recurrent effusion of the knee. History, laboratory and X-rays are usually non-specific.

Objective: To describe a rare disease in pediatrics, emphasizing the correct classification and suspicion.

Influenza-like illness sentinel surveillance in one hospital in Medellin, Colombia. 2007-2012.

Background: The city of Medellin in Colombia has almost no documentation of the causes of acute respiratory infections (ARIs). As part of an ongoing collaboration, we conducted an epidemiologic surveillance for influenza and other respiratory viruses. It described the influenza strains that were circulating in the region along with their distribution over time, and performing molecular characterization to some of those strains.

Resistance profile for pathogens causing urinary tract infection in a pediatric population, and antibiotic treatment response at a university hospital, 2010-2011.

Introduction: Urinary tract infection (UTI) is one of the most common bacterial infections in childhood and causes acute and chronic morbidity and long-term hypertension and chronic kidney disease.

Objectives: To describe the demographic characteristics, infectious agents, patterns of antibiotic resistance, etiologic agent and profile of susceptibility and response to empirical treatment of UTI in a pediatric population.

Methods: This is a descriptive, retrospective study.

[Clinical and laboratory evolution of the febrile neutropenia episodes in pediatric patients hospitalized in a Colombian hospital in 2007-2009].

Introduction: Neutropenia is one of the most common complications in children with cancer, and it's the most important parameter to determine infection risk. In neutropenic patients the signs and symptoms could be scarce and in occasions fever could be the only symptom. For these reasons all patients with febrile neutropenia (FN) should be considered as if they had a possibly severe disease.

[Human metapneumovirus in children: first cases in Colombia].

Human metapneumovirus is a newly discovered pathogen associated with respiratory disease and occurring mainly in children. It produces an acute viral respiratory disease picture that varies from mild disease to severe, and which can require strict surveillance in intensive care units. Currently, reverse transcriptase polymerase chain reaction and cell culture are the most common methods for its diagnosis.