Characterization of patients under 18 years of age with lupus nephritis at the Pablo Tobón Uribe Hospital and at the San Vicente Fundación Hospital in the city of Medellín between 2008 and 2017 Lorena Quiñones-Ríos; Mayra Alejandra Estévez Capacho; Laura Fernanda Niño Serna; Lady Johana Hernández Zapata; Ruth María Eraso Garnica; Catalina Vélez Echeverri; Richard Baquero Rodríguez;

Schönlein-Henoch purpura in adults: Report of four cases Laura Carolina Camacho-Pérez; Manuela Rubio-Rivera;

Takayasu arteritis associated with focal and segmentary glomerulosclerosis Marco Tobar-Marcillo; Édgar Tapia-Rangel; Víctor Rosales-Don Pablo;