title: Von Hansemann cells and Michaelis-Gutmann bodies in a retroperitoneal mass.
authors.affiliation: Section of Pediatric Nephrology, Faculty of Medicine , University of Antioquia , Medellín , Colombia.
authors.forename: Catalina
authors.initials: C
authors.lastname: Vélez
authors.affiliation: Department of Pathology, Faculty of Medicine , University of Antioquia , Medellín , Colombia.
authors.forename: Oscar A
authors.initials: OA
authors.lastname: Franco
authors.forename: Luis F
authors.initials: LF
authors.lastname: Arias
keywords: malakoplakia; renal dysplasia; retroperitoneum