title: Lytic rib lesion in a 1-year-old child: group A beta streptococcal osteomyelitis mimicking tumor.
abstract: Pediatric osteomyelitis commonly occurs in the long bones and has rarely been reported in small bones such as the vertebrae and ribs. Rib osteomyelitis occurs in approximately 1% or less of all cases of hematogenous osteomyelitis, and is usually caused by Staphylococcus aureus. We present a case of acute osteomyelitis in the rib of an otherwise healthy and afebrile 1-year-old infant that appeared as a lytic bone lesion on imaging studies and was mistaken for a tumor. Biopsy was needed to rule out malignancy and establish the diagnosis of osteomyelitis caused by group A Streptococcus. This is one of the few reported cases of pediatric rib osteomyelitis caused by this organism.
authors.affiliation: Division of Pediatric Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Texas Children's Hospital, 6621 Fannin CC 650.00, Houston, TX 77030, USA.
authors.forename: Bindi
authors.initials: B
authors.lastname: Naik-Mathuria
authors.forename: Grace
authors.initials: G
authors.lastname: Ng
authors.forename: Oluyinka O
authors.initials: OO
authors.lastname: Olutoye
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001706:Biopsy; D001859:Bone Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010019:Osteomyelitis / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D013297:Streptococcus pyogenes / Q000302:isolation & purification*; D014057:Tomography, X-Ray Computed
chemical_list: D000900:Anti-Bacterial Agents