title: Osteomyelitis Because of Mycobacterium Xenopi in an Immunocompetent Child.
abstract: We present the case of a 6-year-old, immunocompetent boy with chronic osteomyelitis of the calcaneus caused by Mycobacterium xenopi. Of note, typical histopathology was not visible on the first biopsy and developed only later over a period of 6 weeks, highlighting the difficult differential diagnosis of osteomyelitis caused by nontuberculous mycobacteria.
authors.affiliation: From the *Department of General Pediatrics, Adolescent Medicine and Neonatology, University Medical Center Freiburg, Freiburg, Germany; †Center for Chronic Immunodeficiency (CCI), University Medical Center Freiburg and University of Freiburg, Freiburg, Germany; and ‡Institute for Surgical Pathology, University Medical Center Freiburg, Freiburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Kuntz
authors.forename: Maximilian
authors.initials: M
authors.lastname: Seidl
authors.forename: Philipp
authors.initials: P
authors.lastname: Henneke
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001706:Biopsy; D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009165:Mycobacterium Infections, Nontuberculous / Q000175:diagnosis* / Q000382:microbiology* / Q000628:therapy; D019912:Mycobacterium xenopi / Q000145:classification / Q000276:immunology; D010019:Osteomyelitis / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology*; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents