title: Magnetic resonance imaging findings of empyema necessitatis in a child with a group A streptococcus infection.
abstract: Empyema necessitatis is a process defined and characterized by the transpleural spread of an infected pleural collection into the adjacent chest wall. Symptoms may be referable to the associated pleural and consolidative infection, but sometimes are associated with chest wall involvement. To our knowledge, the magnetic resonance imaging findings of this process have not yet been previously described in children. We present the magnetic resonance imaging findings of a rare case of a child with empyema necessitatis due to a group A streptococcal agent. The aggressive findings make differentiating infection from a tumor difficult.
authors.affiliation: Department of Diagnostic Imaging, Hospital for Sick Children, Toronto, Ontario, Canada.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Stein
authors.forename: David
authors.initials: D
authors.lastname: Manson
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002648:Child; D003287:Contrast Media; D003937:Diagnosis, Differential; D004653:Empyema / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010400:Penicillin G / Q000627:therapeutic use; 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; D003287:Contrast Media; D010400:Penicillin G